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  • {{#category_index:A|alternating-field demagnetization}}
    217 bytes (19 words) - 20:50, 5 March 2018
  • {{#category_index:D|dipole field}} ...the [[Special:MyLanguage/Dictionary:magnetic_field_of_the_Earth|''magnetic field of the Earth'']] (q.v.).
    245 bytes (33 words) - 14:09, 11 October 2017
  • {{#category_index:E|Earth’s gravity field}} The field varies from about 978 000 mGal at the equator to 983 000 mGal at the poles.
    375 bytes (45 words) - 10:24, 16 March 2020
  • {{#category_index:E|Earth’s magnetic field}} ...nd [[Special:MyLanguage/Dictionary:normal_magnetic_field|''normal magnetic field'']].
    284 bytes (37 words) - 10:24, 16 March 2020
  • {{#category_index:E|E-field ratio telluric method}}
    206 bytes (22 words) - 13:33, 6 February 2017
  • {{#category_index:E|electric field}} ...es or a time-varying magnetic field. Unit is volts per meter. The electric field <math> {\mathbf E}</math> induced in a loop equals the negative time deriva
    1 KB (163 words) - 11:37, 31 July 2018
  • {{#category_index:E|external magnetic field}}
    197 bytes (22 words) - 14:42, 7 February 2017
  • {{#category_index:F|far-field}} ...3BB;=wavelength. Compare [[Special:MyLanguage/Dictionary:near-field|''near-field'']].
    572 bytes (77 words) - 08:15, 18 April 2017
  • {{#category_index:F|field}} ...tract or area containing valuable minerals, such as a coal field or an oil field; see [[Special:MyLanguage/Dictionary:resource|''resource'']]. <b>4</b>. Spa
    795 bytes (115 words) - 17:18, 30 October 2018
  • {{#category_index:F|field balance}} See [[Special:MyLanguage/Dictionary:Schmidt_field_balance|''Schmidt field balance'']].
    209 bytes (23 words) - 17:18, 30 October 2018
  • {{#category_index:F|field continuation}}
    196 bytes (19 words) - 20:58, 29 July 2018
  • {{#category_index:F|field-effect transistor (FET)}} ...ion, and low cost. A semiconducting device that uses a transverse electric field as input to vary its conductance and thus control its output current. Ideal
    474 bytes (65 words) - 21:02, 29 July 2018
  • {{#category_index:F|field file}}
    206 bytes (25 words) - 17:18, 30 October 2018
  • {{#category_index:F|field filter}}
    181 bytes (23 words) - 13:12, 1 March 2017
  • {{#category_index:F|field impedance}}
    187 bytes (19 words) - 19:27, 12 August 2018
  • {{#category_index:F|field intensity}} ...lectric field, force per unit charge (or voltage gradient). Also called <b>field strength</b>. Sometimes expressed as <b>flux density</b>, lines of force pe
    464 bytes (70 words) - 19:20, 22 January 2018
  • {{#category_index:F|field of view}}
    193 bytes (25 words) - 17:19, 30 October 2018
  • {{#category_index:F|field processing}}
    478 bytes (67 words) - 13:13, 1 March 2017
  • {{#category_index:F|field tape}} A magnetic tape containing geophysical data recorded in the field, as opposed to a processed tape on which the data have been modified by com
    278 bytes (39 words) - 13:13, 1 March 2017
  • {{#category_index:F|field timing}} ...usually displayed on a field monitor record as timing lines), on an analog field tape as a 100-Hz timing signal, and on digital tape as timing words or word
    488 bytes (73 words) - 17:19, 30 October 2018
  • {{#category_index:F|fixed field}}
    151 bytes (17 words) - 18:33, 16 January 2018
  • {{#category_index:F|free field}} Not relating to a preassigned or fixed field.
    192 bytes (23 words) - 18:00, 14 November 2017
  • {{#category_index:F|free-space field}} ...by conductors. See [[Special:MyLanguage/Dictionary:primary_field|''primary field'']].
    260 bytes (32 words) - 17:59, 14 November 2017
  • {{#category_index:G|geomagnetic field}} See [[Special:MyLanguage/Dictionary:magnetic_field_of_the_Earth|''magnetic field of the Earth'']].
    225 bytes (27 words) - 22:21, 25 January 2018
  • {{#category_index:G|geothermal field}}
    281 bytes (34 words) - 11:24, 7 June 2018
  • {{#category_index:I|International Geomagnetic Reference Field (IGRF)}} ...armonics. The IGRF is subtracted from observed data to determine the local field.
    436 bytes (55 words) - 20:37, 27 February 2017
  • {{#category_index:M|magnetic field}} ...w surrounds an electric current. <b>H</b> is sometimes called the magnetic field. See Figure [[Special:MyLanguage/Dictionary:Fig_M-1|M-1]].
    3 KB (465 words) - 19:31, 30 July 2017
  • {{#category_index:M|magnetic field of the Earth}} ...[[Special:MyLanguage/Dictionary:Fig_M-2|M-2]]. See also ''normal magnetic field''.
    850 bytes (140 words) - 18:44, 1 August 2017
  • {{#category_index:N|near-field}} ...depths'']] (q.v.). Compare [[Special:MyLanguage/Dictionary:far-field|''far field'']]. See Sheriff and Geldart (1995, 48).
    857 bytes (119 words) - 04:25, 1 August 2017
  • {{#category_index:N|nondipole field}} See [[Special:MyLanguage/Dictionary:magnetic_field_of_the_Earth|''magnetic field of the Earth'']].
    223 bytes (27 words) - 18:39, 18 March 2018
  • {{#category_index:N|normal magnetic field}} ...roughly aligned with the present-day field. Antonym: <b>reversed magnetic field</b>.
    797 bytes (110 words) - 15:22, 11 December 2017
  • {{#category_index:P|parallel field}} A uniform field in which current flow lines or equipotential surfaces are parallel.
    207 bytes (26 words) - 17:06, 8 November 2017
  • {{#category_index:P|potential field}} ...ch as gravity, magnetic, or electrical fields. For such fields, the vector field may be expressed as the gradient of some scalar potential or the curl of a
    416 bytes (59 words) - 12:54, 8 May 2019
  • {{#category_index:P|potential-field tilt}}
    198 bytes (21 words) - 14:47, 10 April 2019
  • {{#category_index:P|primary field}} The electromagnetic field that would be generated if the source were in free space.
    206 bytes (27 words) - 19:58, 11 July 2018
  • {{#category_index:R|radiation field}} The far-field term in electromagnetic radiation, whose amplitude falls off with distance
    231 bytes (28 words) - 17:09, 22 January 2018
  • {{#category_index:R|reversed magnetic field}} See [[Special:MyLanguage/Dictionary:normal_magnetic_field|''normal magnetic field'']].
    219 bytes (24 words) - 16:11, 27 July 2017
  • {{#category_index:R|rotary-field electromagnetic method}}
    222 bytes (23 words) - 14:51, 8 August 2017
  • {{#category_index:S|Schmidt field balance}} ...ife-edge. The torque of the magnet trying to align with the Earth&#x2019;s field is balanced by a gravitational torque because the magnetometer is not pivot
    380 bytes (57 words) - 09:46, 3 November 2017
  • {{#category_index:S|secondary field}} ...In methods where galvanic energization of the earth is used, the secondary field is that resulting from the difference between the actual current system in
    506 bytes (74 words) - 20:42, 9 March 2017
  • {{#category_index:S|static field}} The field of an electric dipole that falls off with distance ''r'' as 1/''r''<sup>3</
    212 bytes (29 words) - 10:49, 27 October 2017
  • {{#category_index:S|stationary field}} A physical field that does not vary with time.
    172 bytes (22 words) - 05:46, 30 October 2017
  • ...s]]) we'll talk about a widely used method of interpretation for potential-field data called Euler deconvolution. Our goal is to demonstrate its usefulness ...I is an integer number that is related to the homogeneity of the potential field and varies for different fields and source types (Stavrev and Reid, 2007)<r
    10 KB (1,472 words) - 16:09, 24 November 2017
  • ...in [[Öz Yilmaz|Oz Yilmaz's]] [[Seismic Data Analysis]] are examined using field data examples below. Application of statistical deconvolution to pre- and p We shall analyze field data with three different nearsurface characteristics. Specifically, near-s
    41 KB (6,230 words) - 17:19, 7 October 2014
  • ..., down to a specified datum ''D''. From the geometry of Figure 3.4-10, the field statics correction Δ''τ<sub>D</sub>'' can be computed by *[[Field data examples]]
    4 KB (595 words) - 11:28, 19 September 2014
  • Now consider the field data example in Figure 8.0-3a. Layer replacement will be done on these data
    7 KB (1,089 words) - 14:08, 1 October 2014
  • #REDIRECT [[Euler deconvolution of potential field data]]
    57 bytes (7 words) - 16:05, 5 December 2014
  • The [http://www.seg.org/web/foundation/programs/fieldcamps SEG Foundation Field Camp program] is intended to advance geophysics today and inspire geoscient ==List of field camps implemented by SEG Student Chapters==
    1 KB (151 words) - 18:03, 13 April 2015
  • 0 bytes (0 words) - 19:22, 7 February 2015
  • {{Infobox field camps
    393 bytes (40 words) - 10:57, 26 February 2015
  • 0 bytes (0 words) - 19:27, 7 February 2015
  • 0 bytes (0 words) - 19:25, 7 February 2015
  • {{Infobox field camps ...ining and financial support to help realizing this Indonesian-German Joint Field Camp 2012.
    12 KB (1,835 words) - 17:06, 3 September 2015
  • {{Infobox field camps ...Chapter - SGS Berlin & Potsdam Joint Field Camp 2008|Romanian-German Joint Field Camp in 2008]]. Their experiences and knowledge were of great profit for al
    8 KB (1,183 words) - 08:48, 31 August 2015
  • {{Infobox field camps ...- University of Bucharest SEG Student Chapter Joint Field Camp 2009|joint field camp in 2009]] which has been carried out in Germany.
    5 KB (793 words) - 08:46, 31 August 2015
  • {{Infobox field camps ...tudents travelled to Nizhny Novgorod to implement the Russian-German Joint Field Camp along with their Russian fellow students.
    13 KB (2,033 words) - 11:38, 21 September 2015
  • #REDIRECT [[Field camps]]
    25 bytes (3 words) - 16:37, 10 March 2015
  • {{Infobox field camps
    405 bytes (46 words) - 16:32, 10 March 2015
  • {{Infobox field camps | image = [[File:SGS-Highschool Field Camp 2011.jpg|300px]]
    11 KB (1,650 words) - 05:35, 8 September 2015
  • {{#category_index:S|secondary field}} ...In methods where galvanic energization of the earth is used, the secondary field is that resulting from the difference between the actual current system in
    419 bytes (66 words) - 19:21, 9 March 2017
  • {{#category_index:S|secondary field}}
    434 bytes (74 words) - 20:55, 9 March 2017
  • {{#category_index:P|potential field}} ...ch as gravity, magnetic, or electrical fields. For such fields, the vector field may be expressed as the gradient of some scalar potential or the curl of a
    357 bytes (53 words) - 05:11, 22 June 2019
  • ...effort will probably be required to achieve adequate data quality. Propose field methods and explain the bases for your proposals. | align="center" | [[Optimizing field layouts]]
    7 KB (991 words) - 13:40, 25 June 2019
  • {{#category_index:F|far-field}} ...3BB;=wavelength. Compare [[Special:MyLanguage/Dictionary:near-field|''near-field'']].
    513 bytes (71 words) - 08:15, 18 April 2017
  • 91 bytes (13 words) - 16:32, 20 May 2019
  • 413 bytes (68 words) - 07:46, 14 June 2017
  • 224 bytes (33 words) - 07:48, 14 June 2017
  • {{#category_index:R|reversed magnetic field}} See [[Special:MyLanguage/Dictionary:normal_magnetic_field|''normal magnetic field'']].
    160 bytes (18 words) - 16:11, 27 July 2017
  • {{#category_index:M|magnetic field}} ...w surrounds an electric current. <b>H</b> is sometimes called the magnetic field. See Figure [[Special:MyLanguage/Dictionary:Fig_M-1|M-1]].
    2 KB (437 words) - 19:32, 30 July 2017
  • 2 KB (170 words) - 17:38, 1 August 2017
  • {{#category_index:N|near-field}} ...depths'']] (q.v.). Compare [[Special:MyLanguage/Dictionary:far-field|''far field'']]. See Sheriff and Geldart (1995, 48).
    798 bytes (113 words) - 04:25, 1 August 2017
  • {{#category_index:M|magnetic field of the Earth}} ...[[Special:MyLanguage/Dictionary:Fig_M-2|M-2]]. See also ''normal magnetic field''.
    791 bytes (134 words) - 18:45, 1 August 2017
  • 548 bytes (18 words) - 18:51, 1 August 2017
  • ...肤效应深度'']] (q.v.)。请比较 [[Special:MyLanguage/Dictionary:far-field|''远场'']] 参考 Sheriff and Geldart (1995, 48).
    644 bytes (31 words) - 10:48, 2 August 2017
  • {{#category_index:R|rotary-field electromagnetic method}}
    163 bytes (17 words) - 14:51, 8 August 2017
  • 2 KB (456 words) - 13:15, 28 November 2020
  • 844 bytes (156 words) - 13:16, 28 November 2020
  • 716 bytes (109 words) - 11:39, 27 July 2020
  • {{#category_index:R|rotary-field electromagnetic method}}
    176 bytes (20 words) - 13:16, 17 April 2020
  • {{#category_index:R|reversed magnetic field}}
    162 bytes (19 words) - 10:49, 17 April 2020
  • {{#category_index:D|dipole field}} ...the [[Special:MyLanguage/Dictionary:magnetic_field_of_the_Earth|''magnetic field of the Earth'']] (q.v.).
    186 bytes (27 words) - 14:09, 11 October 2017
  • 178 bytes (26 words) - 17:32, 19 August 2019
  • {{#category_index:S|static field}} The field of an electric dipole that falls off with distance ''r'' as 1/''r''<sup>3</
    153 bytes (23 words) - 10:49, 27 October 2017
  • {{#category_index:S|static field}}
    154 bytes (24 words) - 11:00, 27 October 2017
  • {{#category_index:S|stationary field}} A physical field that does not vary with time.
    113 bytes (16 words) - 05:46, 30 October 2017
  • {{#category_index:S|stationary field}}
    112 bytes (18 words) - 05:49, 30 October 2017
  • 138 bytes (21 words) - 17:09, 8 November 2017
  • {{#category_index:S|Schmidt field balance}} ...ife-edge. The torque of the magnet trying to align with the Earth&#x2019;s field is balanced by a gravitational torque because the magnetometer is not pivot
    320 bytes (51 words) - 09:47, 3 November 2017
  • {{#category_index:S|Schmidt field balance}}
    368 bytes (64 words) - 10:23, 3 November 2017
  • {{#category_index:F|free-space field}} ...by conductors. See [[Special:MyLanguage/Dictionary:primary_field|''primary field'']].
    201 bytes (26 words) - 10:43, 21 November 2017
  • {{#category_index:F|free field}}
    110 bytes (16 words) - 14:33, 23 June 2021
  • 162 bytes (20 words) - 14:14, 6 September 2019
  • {{#category_index:I|International Geomagnetic Reference Field (IGRF)}} ...armonics. The IGRF is subtracted from observed data to determine the local field.
    376 bytes (49 words) - 20:37, 27 February 2017
  • {{#category_index:F|field filter}}
    122 bytes (17 words) - 13:12, 1 March 2017
  • {{#category_index:F|field processing}}
    419 bytes (61 words) - 13:13, 1 March 2017
  • {{#category_index:F|field tape}} A magnetic tape containing geophysical data recorded in the field, as opposed to a processed tape on which the data have been modified by com
    219 bytes (33 words) - 13:13, 1 March 2017
  • {{#category_index:I|International Geomagnetic Reference Field (IGRF)}}
    445 bytes (67 words) - 20:34, 21 December 2019
  • {{#category_index:E|E-field ratio telluric method}}
    146 bytes (16 words) - 13:33, 6 February 2017
  • {{#category_index:E|Earth&#x2019;s gravity field}} The field varies from about 978 000 mGal at the equator to 983 000 mGal at the poles.
    340 bytes (41 words) - 10:26, 16 March 2020
  • {{#category_index:E|Earth&#x2019;s magnetic field}} ...nd [[Special:MyLanguage/Dictionary:normal_magnetic_field|''normal magnetic field'']].
    249 bytes (33 words) - 10:25, 16 March 2020
  • 206 bytes (27 words) - 10:25, 16 March 2020
  • 291 bytes (35 words) - 10:26, 16 March 2020
  • {{#category_index:E|E-field ratio telluric method}}
    145 bytes (18 words) - 21:41, 5 August 2019
  • {{#category_index:E|external magnetic field}}
    138 bytes (16 words) - 14:44, 7 February 2017
  • 105 bytes (12 words) - 07:40, 8 February 2017
  • ...dataset] spans the 1997-2006 period and contains data for the whole Norne Field.
    2 KB (233 words) - 05:32, 26 April 2016
  • 67 bytes (9 words) - 14:35, 22 June 2021
  • 146 bytes (22 words) - 17:12, 22 January 2018
  • 124 bytes (17 words) - 04:24, 9 June 2019
  • {{#category_index:F|field intensity}} ...lectric field, force per unit charge (or voltage gradient). Also called <b>field strength</b>. Sometimes expressed as <b>flux density</b>, lines of force pe
    405 bytes (64 words) - 05:19, 8 February 2018
  • 104 bytes (10 words) - 17:24, 24 March 2020
  • ...ndidad pelicular'']] (ver). Compárese [[Special:MyLanguage/Dictionary:far-field/es|''campo lejano'']]. Ver Sheriff y Geldart (1995, 48).
    857 bytes (133 words) - 21:40, 1 July 2020
  • 131 bytes (18 words) - 16:08, 14 July 2020
  • {{#category_index:P|parallel field}} A uniform field in which current flow lines or equipotential surfaces are parallel.
    148 bytes (20 words) - 08:17, 26 March 2018
  • {{#category_index:N|nondipole field}} See [[Special:MyLanguage/Dictionary:magnetic_field_of_the_Earth|''magnetic field of the Earth'']].
    164 bytes (21 words) - 08:41, 26 March 2018
  • {{#category_index:F|fixed field}}
    92 bytes (11 words) - 08:56, 26 March 2018
  • {{#category_index:G|geomagnetic field}} See [[Special:MyLanguage/Dictionary:magnetic_field_of_the_Earth|''magnetic field of the Earth'']].
    166 bytes (21 words) - 10:19, 28 March 2018
  • {{#category_index:A|alternating-field demagnetization}}
    158 bytes (13 words) - 10:19, 28 March 2018
  • {{#category_index:F|free field}} Not relating to a preassigned or fixed field.
    107 bytes (15 words) - 10:19, 28 March 2018
  • {{#category_index:R|radiation field}} The far-field term in electromagnetic radiation, whose amplitude falls off with distance
    172 bytes (22 words) - 10:20, 28 March 2018
  • {{#category_index:N|normal magnetic field}} ...roughly aligned with the present-day field. Antonym: <b>reversed magnetic field</b>.
    738 bytes (104 words) - 10:21, 28 March 2018
  • {{#category_index:G|geothermal field}}
    222 bytes (28 words) - 11:24, 7 June 2018
  • 221 bytes (28 words) - 11:26, 7 June 2018
  • {{#category_index:P|primary field}} The electromagnetic field that would be generated if the source were in free space.
    147 bytes (21 words) - 20:58, 11 July 2018
  • {{#category_index:F|field-effect transistor (FET)}} ...ion, and low cost. A semiconducting device that uses a transverse electric field as input to vary its conductance and thus control its output current. Ideal
    415 bytes (59 words) - 21:03, 29 July 2018
  • {{#category_index:F|field continuation}}
    137 bytes (13 words) - 21:59, 29 July 2018
  • {{#category_index:F|field continuation}}
    141 bytes (15 words) - 22:14, 29 July 2018
  • 420 bytes (66 words) - 16:39, 20 May 2019
  • {{#category_index:E|electric field}} ...es or a time-varying magnetic field. Unit is volts per meter. The electric field <math> {\mathbf E}</math> induced in a loop equals the negative time deriva
    949 bytes (143 words) - 13:37, 31 July 2018
  • 116 bytes (18 words) - 16:46, 7 August 2018
  • {{#category_index:F|field impedance}}
    128 bytes (13 words) - 23:27, 12 August 2018
  • 94 bytes (9 words) - 23:12, 23 August 2018
  • {{#category_index:E|electric field}}
    992 bytes (157 words) - 10:51, 29 November 2020
  • {{#category_index:F|field}} ...tract or area containing valuable minerals, such as a coal field or an oil field; see [[Special:MyLanguage/Dictionary:resource|''resource'']]. <b>4</b>. Spa
    710 bytes (107 words) - 17:18, 30 October 2018
  • {{#category_index:F|field file}}
    147 bytes (19 words) - 17:19, 30 October 2018
  • {{#category_index:F|field timing}} ...usually displayed on a field monitor record as timing lines), on an analog field tape as a 100-Hz timing signal, and on digital tape as timing words or word
    429 bytes (67 words) - 18:19, 30 October 2018
  • {{#category_index:F|field balance}} See [[Special:MyLanguage/Dictionary:Schmidt_field_balance|''Schmidt field balance'']].
    150 bytes (17 words) - 20:19, 30 October 2018
  • {{#category_index:F|field}}
    760 bytes (119 words) - 14:11, 22 June 2021
  • ...x03BB;=longitud de onda. Comparar con [[Special:MyLanguage/Dictionary:near-field|''campo cercano'']].
    522 bytes (80 words) - 13:03, 22 June 2021
  • 117 bytes (13 words) - 14:12, 22 June 2021
  • 128 bytes (19 words) - 20:38, 9 January 2019
  • 431 bytes (74 words) - 14:14, 22 June 2021
  • 99 bytes (16 words) - 20:44, 9 January 2019
  • 631 bytes (110 words) - 14:16, 22 June 2021
  • 4 KB (566 words) - 12:23, 14 February 2019
  • 77 bytes (2 words) - 04:42, 28 February 2019
  • 92 bytes (10 words) - 15:08, 10 April 2019
  • {{#category_index:P|potential field}}
    379 bytes (55 words) - 07:50, 14 September 2019
  • {{#category_index:P|potential field}} ...ch as gravity, magnetic, or electrical fields. For such fields, the vector field may be expressed as the gradient of some scalar potential or the curl of a
    357 bytes (53 words) - 14:55, 8 May 2019
  • Seismic field work is usually carried out in a uniform manner with group intervals everyw | align="center" | [[Selecting optimum field methods]]
    7 KB (996 words) - 13:42, 25 June 2019
  • {{#category_index:P|potential field}} ...ch as gravity, magnetic, or electrical fields. For such fields, the vector field may be expressed as the gradient of some scalar potential or the curl of a
    357 bytes (53 words) - 13:35, 22 July 2019
  • |Item=Field Office Desk
    358 bytes (52 words) - 10:56, 1 November 2019
  • |Item=Gravity Map (FreeAir Gravity Anomaly Field) ...esent, and Jason 2 2008–present). Objective: The Free-Air Gravity Anomaly Field is composed of two components; a long wavelength related to deeper mantle s
    1 KB (178 words) - 11:21, 1 November 2019
  • |Item=Geophone Tester SMT 100 Field Box LLR Field or shop unit that checked the integrity of a geophone or string of geophone
    294 bytes (42 words) - 11:21, 1 November 2019
  • |Item=Geophone Tester SMT 100 Field Box Field unit that checked the integrity of a geophone or string of geophones. Teste
    282 bytes (39 words) - 11:26, 1 November 2019
  • |Item=Magnetometer Portable Field
    408 bytes (59 words) - 11:28, 1 November 2019
  • |Item=Magnetometer Portable Field ...agnetic meridian and gravity horizon. To give accurate results, a magnetic field balance must have reliable means for leveling and orienting, a device for f
    2 KB (319 words) - 11:29, 1 November 2019
  • |Item=Magnetometer Portable Field
    1 KB (197 words) - 11:32, 1 November 2019
  • |Item=Magnetometer Portable Field
    413 bytes (59 words) - 11:39, 1 November 2019
  • |Item=Picture of SSC Field Crew
    414 bytes (68 words) - 11:41, 1 November 2019
  • |Item=Crude Oil, McFadden Field
    374 bytes (56 words) - 12:01, 23 July 2020
  • 308 bytes (9 words) - 09:08, 10 November 2019
  • 参见[[Special:MyLanguage/Dictionary:magnetic_field_of_the_Earth|''magnetic field of the Earth'']].
    128 bytes (15 words) - 20:44, 28 December 2019
  • 142 bytes (2 words) - 01:02, 29 January 2020
  • |Item=Gravity Map (FreeAir Grav Anomaly Field) ...esent, and Jason 2 2008–present). Objective: The Free-Air Gravity Anomaly Field is composed of two components; a long wavelength related to deeper mantle s
    1 KB (175 words) - 12:12, 23 July 2020
  • 63 bytes (2 words) - 06:49, 5 November 2021

Page text matches

  • ...ationist, engineer, energy adviser, economist, and student involved in the field.
    4 KB (643 words) - 15:01, 30 June 2021
  • The absolute acceleration of the Earth&#x2019;s gravity field as opposed to relative gravity such as measured by conventional gravimeters
    712 bytes (99 words) - 12:43, 2 September 2016
  • Alternating-field demagnetization; see [[Special:MyLanguage/Dictionary:demagnetization|''dema
    237 bytes (21 words) - 11:32, 8 December 2017
  • ...the complex ratio of electric field <b>E</b> to the perpendicular magnetic field <b>H</b>, or the inverse of the impedance tensor ''Z''.
    731 bytes (113 words) - 15:01, 23 January 2018
  • Measurements of the Earth&#x2019;s gravity field in a moving airplane, blimp, or helicopter. Requires the precise measuremen
    747 bytes (99 words) - 15:03, 23 January 2018
  • ...nguage/Dictionary:Fig_A-5|A-5]]), reversals of the Earth&#x2019;s magnetic field (see Figure [[Special:MyLanguage/Dictionary:Fig_G-4|G-4]]), sequence strati
    650 bytes (89 words) - 22:51, 23 February 2018
  • Used to measure variations in the Earth&#x2019;s magnetic field from an aircraft. See [[Dictionary:magnetometer|''magnetometer'']].
    237 bytes (29 words) - 12:29, 17 October 2016
  • ...>), and to sampling such as is done in gravity surveys where the potential field is measured only at discrete stations, etc.
    4 KB (611 words) - 17:32, 26 February 2018
  • {{#category_index:A|alternating-field demagnetization}}
    217 bytes (19 words) - 20:50, 5 March 2018
  • A law giving the magnetic field caused by a current. See Figure [[Special:MyLanguage/Dictionary:Fig_A-10|A-
    271 bytes (40 words) - 10:25, 20 February 2020
  • '''2'''. The analytic signal <b>A</b> of a potential field <b>F</b> is If |''A''| is derived from a magnetic field, it peaks over contacts and its half-width at half maximum (measured perpen
    1 KB (201 words) - 14:39, 9 April 2018
  • A processing method for potential-field data, also called the <b>total gradient method</b>. Used for defining the l
    524 bytes (67 words) - 22:16, 9 April 2018
  • ...ted to a constant magnetic field while a supplemental decaying alternating field has been progressively reduced to zero. This procedure removes isothermal r
    416 bytes (55 words) - 11:03, 6 March 2018
  • ...physical properties; a perturbation from a normal, uniform, or predictable field. <b>2</b>. Observed minus theoretical value. <b>3</b>. A portion of a geoph
    1 KB (172 words) - 13:46, 17 October 2016
  • ...gnetic methods, quantities such as the moduli of the electric and magnetic field intensities (<b>E</b> and <b>H</b>) are measured at a certain frequency or
    3 KB (368 words) - 14:38, 11 March 2018
  • | ''IGSC 5 Chairman and Field Camp 2014 & 2015 Leader'' ...Geosciences Student Conference (it was an unique experience for Russia) or Field Camp 2014 (from the point of view of attracting attention from federal and
    7 KB (1,106 words) - 06:18, 21 January 2016
  • ...y</b> examples. (<b>a,b</b>) Dip-magnitude and dip-azimuth maps, Nun River field, Nigeria (from Bouvier et al., 1989).]]
    7 KB (961 words) - 15:01, 6 February 2018
  • Programs to automatically scan digital potential-field profiles or maps to estimate the depth of magnetic, gravity, etc. sources.
    832 bytes (98 words) - 02:53, 25 December 2017
  • ...mbol for induced [[Special:MyLanguage/Dictionary:magnetic_field|''magnetic field'']] (q.v.). <b>3</b>. The gradient in AVO studies, where the amplitude is o
    770 bytes (110 words) - 22:20, 4 October 2017
  • ...alue. <b>2</b>. Superposing an additional magnetic field upon the magnetic field associated with the signal during magnetic tape recording. Used to obtain a
    979 bytes (151 words) - 10:22, 24 March 2017
  • ...pairs of dipoles to determine the magnitude and direction of the electric field. The method is used for reconnaissance because of the low cost per station
    633 bytes (90 words) - 23:05, 24 March 2017
  • ...ed <b>simple Bouguer</b>. The Bouguer gravity field is not the same as the field that would have been observed at the datum elevation, because the shape of
    2 KB (280 words) - 11:42, 3 August 2017
  • ...solution and of the derivatives of the solution on the boundary. When the field values are specified the conditions are called ''Dirichlet conditions''. Wh
    910 bytes (127 words) - 22:21, 27 September 2020
  • ...t results when a charged particle experiences an acceleration while in the field of another charged particle. An electron accelerating as it approaches a nu
    639 bytes (91 words) - 18:42, 28 February 2017
  • ...) <b>1</b>. A resistivity calculated from orthogonal electric and magnetic field measurements, used for magnetotelluric measurements in a layered earth. For
    648 bytes (87 words) - 20:58, 27 February 2017
  • ...field component in some direction, ''E''<sub>''x''</sub>, to the magnetic field, ''H''<sub>''y''</sub>, in a perpendicular direction. For a horizontally la
    470 bytes (63 words) - 20:58, 27 February 2017
  • === Free Space with a potential field <math> U(x) </math> === <!--T:79-->
    12 KB (2,058 words) - 12:26, 26 October 2017
  • A constant used to compensate for inaccuracies in electromagnetic field parameters, current channeling, and static shifts. For transient electromag
    343 bytes (40 words) - 21:04, 27 February 2017
  • An electromagnetic technique in which the vertical magnetic field is measured as a function of frequency at the center of a large horizontal
    295 bytes (39 words) - 10:28, 11 July 2017
  • ...s and decay is measured for the first second of a three-seconds off time." Field measurements of chargeability are usually calibrated to the ''M''<sub>331</
    2 KB (276 words) - 15:02, 9 April 2019
  • ...stic wave equation. See Claerbout (1976, Fig. 10-1). <b>2</b>. A potential-field continuation method for converting level-flown data to drape-flown and vice
    532 bytes (73 words) - 10:37, 28 November 2017
  • (k&#x014D; ur&#x2019; siv) The magnetic field intensity required to reduce the magnetization of a sample to zero. General
    473 bytes (57 words) - 20:01, 26 January 2017
  • The demagnetizing field intensity required to reduce the induction of magnetic material from satura
    487 bytes (69 words) - 21:27, 26 January 2017
  • ...de-by-side display of traces that have the same source location; such as a field record; see Figure [[Special:MyLanguage/Dictionary:Fig_C-9|C-9]]d. <b>2</b>
    421 bytes (61 words) - 12:52, 8 May 2017
  • ...<math> f(z) </math> is a mapping from the field of complex numbers to the field of complex numbers, then <math> f(z) </math> must, itself be the sum of a p
    7 KB (1,124 words) - 00:09, 21 March 2020
  • ...here <math>\sigma </math> is the conductivity and <b>E</b> is the electric field. Conduction currents usually are more important than displacement currents
    1 KB (175 words) - 18:12, 16 July 2017
  • ...ld at the elevation ''z'', ''F''(''x'',''y'',''z''), can be found from the field on the surface, ''F''(''x'' ', ''y'' ',0). Where the surfaces are horizonta
    920 bytes (132 words) - 10:11, 20 August 2017
  • A sum obtained by adding the numbers in a field; used for checking to avoid dropout.
    207 bytes (29 words) - 19:39, 21 November 2017
  • ...f energy or mass by motion of the medium. A transport phenomenon where the field varies in time with the aid of motion of the medium. Examples include heat
    456 bytes (63 words) - 19:51, 21 November 2017
  • ...rough Gas Using 4-Component, 3D Seismic Data: A Case Study From The Lomond Field | journal = Offshore Technology Conference | location = Houston, TX | year
    4 KB (533 words) - 11:20, 19 September 2020
  • ...ismic wave generated by an earthquake, the frequency at which the spectral field begins to decrease. It is related to the dimensions of the source.
    430 bytes (67 words) - 12:07, 8 December 2017
  • Graphs of horizontal and vertical derivatives of the magnetic field intersect at critical points that have interpretation significance. Plots c
    326 bytes (42 words) - 10:17, 12 February 2018
  • ...ce loop that is horizontal. In the presence of a subsurface conductor, the field will be horizontal over the apex but will have vertical components in oppos
    589 bytes (90 words) - 10:17, 12 February 2018
  • Very rapid magnetic-field reversal.
    156 bytes (16 words) - 20:25, 15 February 2018
  • ...turn of spinning nuclei to their prior state after a superimposed magnetic field has been removed, as in [[Special:MyLanguage/Dictionary:nuclear-magnetic_re
    666 bytes (98 words) - 07:27, 14 February 2017
  • ...'' directions. <math>\nabla U </math> is the <b>gradient</b> of the scalar field U. As an operator on a vector field <b>V</b>, <math>\nabla \cdot \textbf{V} </math> is called the <b>divergence
    1 KB (179 words) - 19:45, 31 August 2018
  • ...he effect of the Earth&#x2019;s magnetic field. Also called <b>alternating-field demagnetization</b> and <b>degaussing</b>.
    893 bytes (138 words) - 14:30, 21 November 2018
  • .... <b>2</b>. The result of applying a wavelength filter to potential&#x0020;field&#x0020;data to emphasize anomalies around some depth.
    439 bytes (61 words) - 15:56, 22 March 2018
  • ...velocity function and then reanalyzed for velocity to update the velocity field.
    349 bytes (48 words) - 15:58, 22 March 2018
  • A map of one of the derivatives of a field of values such as gravity, magnetics, time structure, etc. The objective of
    1 KB (175 words) - 16:26, 30 January 2017
  • ...dic motion produces a magnetic moment opposite in direction to the applied field. Diamagnetic effects rarely exceed one nanotesla, the most evident diamagne
    873 bytes (117 words) - 18:26, 3 April 2017
  • ...y]]</b>, the ratio of the electrical displacement <b>D</b> to the electric field strength <b>E</b>, of the material to that of free space:
    1 KB (180 words) - 18:58, 13 May 2017
  • ...ctric material, no net electric charge need be transferred by the exciting field. By some definitions, induced polarization is a lossy type of dielectric po
    460 bytes (63 words) - 18:58, 13 May 2017
  • ...prism</b>. Vertical and dipping dike models are used commonly in potential-field calculations. <b>2</b>. Igneous rock that cuts across adjacent rock. Also s
    461 bytes (69 words) - 09:36, 3 August 2017
  • ...from eddy currents in a conducting body changes the direction of the total field (horizontal in the case of a vertical transmitter loop) which would be meas
    485 bytes (70 words) - 13:32, 11 October 2017
  • ...a <b>bipole. 3</b>. In electromagnetic surveying, an electric- or magnetic-field transmitting or receiving antenna which is small enough to be represented m
    804 bytes (121 words) - 14:07, 11 October 2017
  • {{#category_index:D|dipole field}} ...the [[Special:MyLanguage/Dictionary:magnetic_field_of_the_Earth|''magnetic field of the Earth'']] (q.v.).
    245 bytes (33 words) - 14:09, 11 October 2017
  • <b>1</b>. A seismic field method wherein the primary concern is determining the dip of reflectors. Ma
    388 bytes (53 words) - 14:05, 11 October 2017
  • ...or <b>forward solution. 2</b>. Direct mathematical solution of a potential-field problem without use of precomputed curves or models.
    365 bytes (46 words) - 15:30, 27 November 2017
  • ...Phenomena with a periodicity of about one day. Changes in the geomagnetic field related principally to the rotation of the Earth in the [[Special:MyLanguag
    818 bytes (115 words) - 21:06, 3 April 2017
  • ...ature, absorption, and other reasons. <b>2</b>. The divergence of a vector field is expressed in Figure [[Special:MyLanguage/Dictionary:Fig_C-14|C-14]] for
    809 bytes (115 words) - 21:06, 3 April 2017
  • ...grand of the (hyper-)volume integral is an exact divergence of that vector field. The quantity <math> \mathbf{\hat{n}}=({\bar{n}}_1, {\bar{n}}_2, ... \bar{
    5 KB (847 words) - 17:07, 17 August 2021
  • ...or cab) that contains seismic or well-logging recording instruments in the field.
    208 bytes (26 words) - 20:47, 4 May 2017
  • A geophysicist engaged in field work. Originally used derisively to mean unscientific.
    208 bytes (24 words) - 22:47, 7 June 2017
  • ...outline the mass better until its depth is reached; beyond this point the field computed by continuation becomes erratic. Noise data often precludes succes
    991 bytes (141 words) - 16:30, 9 March 2017
  • <b>1</b>. Exa, the SI prefix for 10<sup>18</sup>. <b>2</b>. The electric field vector.
    185 bytes (26 words) - 10:05, 12 April 2019
  • {{#category_index:E|Earth&#x2019;s gravity field}} The field varies from about 978 000 mGal at the equator to 983 000 mGal at the poles.
    375 bytes (45 words) - 10:24, 16 March 2020
  • {{#category_index:E|Earth&#x2019;s magnetic field}} ...nd [[Special:MyLanguage/Dictionary:normal_magnetic_field|''normal magnetic field'']].
    284 bytes (37 words) - 10:24, 16 March 2020
  • ...e a secondary magnetic field that opposes the primary field. The secondary field has a quadrature component that depends on the ratio of the resistance to t
    674 bytes (98 words) - 15:30, 3 March 2017
  • {{#category_index:E|E-field ratio telluric method}}
    206 bytes (22 words) - 13:33, 6 February 2017
  • ...a high-frequency or large-wavenumber asymptotic representation of the wave field as a family of rays, represented by ray position and ray direction---the so
    2 KB (365 words) - 19:12, 8 April 2019
  • {{#category_index:E|electric field}} ...es or a time-varying magnetic field. Unit is volts per meter. The electric field <math> {\mathbf E}</math> induced in a loop equals the negative time deriva
    1 KB (163 words) - 11:37, 31 July 2018
  • The ratio of electric field to electric polarization, the electrical analog of magnetic permeability. S
    881 bytes (92 words) - 09:34, 9 April 2019
  • ...B; al&#x2019; i sis) Migration of charge through a membrane in an electric field.
    232 bytes (34 words) - 16:56, 2 January 2019
  • ...etotelluric_(MT)_method|''magnetotelluric method'']] (q.v.) where electric field measurements along a profile are made in a continuous fashion. Data is then
    597 bytes (76 words) - 17:07, 11 April 2019
  • ...duction effects are not important (resistivity and IP methods). <b>Natural field methods</b> (such as Afmag and magnetotellurics) employ natural energy as t
    1 KB (176 words) - 17:05, 29 July 2018
  • <b>1</b>. The phenomenon whereby an electric field moves a fluid through a membrane. <b>2</b>. Charge separation in an electro
    274 bytes (36 words) - 00:18, 27 August 2018
  • ...a material that causes it to change dimensions when subject to an electric field. See [[Special:MyLanguage/Dictionary:piezoelectric|''piezoelectric'']].
    332 bytes (42 words) - 14:32, 8 April 2019
  • ...ing the amplitudes and phases of two orthogonal components of the magnetic field.
    487 bytes (69 words) - 12:49, 8 April 2019
  • Seismic field arrangement wherein the source is at (or near) the end of the geophone spre
    302 bytes (41 words) - 17:02, 5 February 2017
  • ...ote VLF transmitter that measures the quadrature component of the electric-field wavetilt. Barringer tradename.
    268 bytes (33 words) - 13:50, 6 February 2017
  • Mapping the potential field produced by stationary (often remote) current electrodes. The mapping is do
    620 bytes (87 words) - 20:43, 6 February 2017
  • ...is everywhere perpendicular to lines of force. No work is done against the field when moving along such a surface. Mean sea level is an equipotential surfac
    422 bytes (58 words) - 20:43, 6 February 2017
  • ...ining gravity or magnetic sources that yields the same gravity or magnetic field as the actual distribution. See Dampney (1969).
    309 bytes (38 words) - 23:28, 21 August 2018
  • (oi&#x2019; l&#x2202;r) A procedure applied to profile or gridded potential field data to solve [[Dictionary:Euler&#x2019;s_homogeneity_equation|''Euler&#x20
    754 bytes (117 words) - 21:53, 19 February 2017
  • ...asure of the rate of field change with distance. For example, the magnetic field of a sphere falls off as the cube <math>(N=3)</math>, of a pipe as the squa
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  • {{#category_index:E|external magnetic field}}
    197 bytes (22 words) - 14:42, 7 February 2017
  • ...induced in a wire of length <math>l</math> (in meters) cutting a magnetic field of strength <math>B</math> (in gauss) at the velocity <math>v</math> (in m/
    748 bytes (129 words) - 10:30, 20 April 2021
  • {{#category_index:F|far-field}} ...3BB;=wavelength. Compare [[Special:MyLanguage/Dictionary:near-field|''near-field'']].
    572 bytes (77 words) - 08:15, 18 April 2017
  • A semi-infinite slab (plate) of uniform thickness, commonly used in potential-field modeling.
    215 bytes (25 words) - 11:43, 10 January 2019
  • [[Special:MyLanguage/Dictionary:field-effect_transistor_(FET)|<b>''F''</b>''ield''-<b>''E''</b>''ffect'' <b>''T''
    241 bytes (31 words) - 17:39, 29 October 2018
  • {{#category_index:F|field}} ...tract or area containing valuable minerals, such as a coal field or an oil field; see [[Special:MyLanguage/Dictionary:resource|''resource'']]. <b>4</b>. Spa
    795 bytes (115 words) - 17:18, 30 October 2018
  • {{#category_index:F|field balance}} See [[Special:MyLanguage/Dictionary:Schmidt_field_balance|''Schmidt field balance'']].
    209 bytes (23 words) - 17:18, 30 October 2018
  • {{#category_index:F|field continuation}}
    196 bytes (19 words) - 20:58, 29 July 2018
  • {{#category_index:F|field-effect transistor (FET)}} ...ion, and low cost. A semiconducting device that uses a transverse electric field as input to vary its conductance and thus control its output current. Ideal
    474 bytes (65 words) - 21:02, 29 July 2018
  • {{#category_index:F|field file}}
    206 bytes (25 words) - 17:18, 30 October 2018
  • {{#category_index:F|field filter}}
    181 bytes (23 words) - 13:12, 1 March 2017
  • {{#category_index:F|field impedance}}
    187 bytes (19 words) - 19:27, 12 August 2018
  • {{#category_index:F|field intensity}} ...lectric field, force per unit charge (or voltage gradient). Also called <b>field strength</b>. Sometimes expressed as <b>flux density</b>, lines of force pe
    464 bytes (70 words) - 19:20, 22 January 2018
  • {{#category_index:F|field of view}}
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  • {{#category_index:F|field processing}}
    478 bytes (67 words) - 13:13, 1 March 2017
  • {{#category_index:F|field tape}} A magnetic tape containing geophysical data recorded in the field, as opposed to a processed tape on which the data have been modified by com
    278 bytes (39 words) - 13:13, 1 March 2017
  • {{#category_index:F|field timing}} ...usually displayed on a field monitor record as timing lines), on an analog field tape as a 100-Hz timing signal, and on digital tape as timing words or word
    488 bytes (73 words) - 17:19, 30 October 2018
  • {{#category_index:F|fixed field}}
    151 bytes (17 words) - 18:33, 16 January 2018
  • ...<b>3</b>. A bit attached to a computer word to indicate the boundary of a field. <b>4</b>. An indicator to tell a later part of a computer program about a
    628 bytes (107 words) - 18:34, 16 January 2018
  • ...electrical, and other lines of force. The flux density is proportional to field intensity.
    234 bytes (30 words) - 20:04, 18 January 2018
  • See [[Special:MyLanguage/Dictionary:field_intensity|''field intensity'']].
    196 bytes (21 words) - 20:04, 18 January 2018
  • ...tation to minimize the magnetic field in two of these, thus maximizing the field for the third. Compare ''[[Special:MyLanguage/Dictionary:proton-precession_
    1 KB (143 words) - 20:05, 18 January 2018
  • ...ve measurements by dividing by the calculated free-space vertical magnetic field. Compare [[Special:MyLanguage/Dictionary:normal_correction|''normal correct
    865 bytes (121 words) - 12:22, 13 February 2017
  • {{#category_index:F|free field}} Not relating to a preassigned or fixed field.
    192 bytes (23 words) - 18:00, 14 November 2017
  • {{#category_index:F|free-space field}} ...by conductors. See [[Special:MyLanguage/Dictionary:primary_field|''primary field'']].
    260 bytes (32 words) - 17:59, 14 November 2017
  • A method of potential-field analysis in which parameters of interest are estimated from characteristics
    462 bytes (54 words) - 18:03, 14 November 2017
  • A device to measure small currents. A coil suspended in a constant magnetic field rotates through an angle proportional to the electrical current flowing thr
    325 bytes (44 words) - 18:50, 17 February 2017
  • '''1'''. A unit of magnetic field equal to one nanotesla, the preferred SI name. 1 gamma=10<sup>-5</sup> gaus
    738 bytes (108 words) - 10:37, 16 March 2020
  • The system for collecting the fluids from various wells within a field.
    197 bytes (25 words) - 03:59, 29 January 2018
  • ...s units, a magnetizing force (in oersteds) gives rise to a flux density or field (in gauss), with the values being equal in magnitude if in free space. Name
    758 bytes (119 words) - 04:00, 29 January 2018
  • Measurement positions with respect to the field of a dipole. Gauss-A is measurement along the dipole&#x2019;s axis, also ca
    323 bytes (47 words) - 04:01, 29 January 2018
  • ...its of measure. This can also be expressed in terms of the flux density or field strength <b>g</b>, the source density <math> \rho </math>, and the potentia
    2 KB (260 words) - 10:41, 16 March 2020
  • ...&#x2202; s&#x0113;) The study of the Earth&#x2019;s form and gravitational field. Involves the location of points on the Earth with respect to reference sys
    300 bytes (43 words) - 07:15, 29 January 2018
  • The gravity field (acceleration of gravity) at the latitude <math> \lambda </math> is given b
    701 bytes (92 words) - 22:13, 25 January 2018
  • {{#category_index:G|geomagnetic field}} See [[Special:MyLanguage/Dictionary:magnetic_field_of_the_Earth|''magnetic field of the Earth'']].
    225 bytes (27 words) - 22:21, 25 January 2018
  • Reversals of the Earth&#x2019;s magnetic field that can be used to age-date formations. See Figure [[Special:MyLanguage/Di
    313 bytes (40 words) - 22:21, 25 January 2018
  • ...See [[Special:MyLanguage/Dictionary:magnetic_field_of_the_Earth|''magnetic field of the Earth'']].
    350 bytes (48 words) - 22:22, 25 January 2018
  • Change in the polarity of the Earth&#x2019;s magnetic field from its present polarity. See [[Special:MyLanguage/Dictionary:magnetochron
    295 bytes (34 words) - 22:22, 25 January 2018
  • ...n the three components of the magnetic field at different stations, as the field varies naturally.
    363 bytes (44 words) - 22:21, 25 January 2018
  • A coil is suspended by springs in a magnetic field (the magnet may be integral with the case of the instrument). The relative movement of a magnetic field with respect to the coil generates a voltage across the coil, the voltage b
    2 KB (317 words) - 22:33, 25 January 2018
  • ...eshape changes, electric potential differences, magnetic and gravitational field strength, temperature, etc. Synonyms: <b>applied geophysics, geophysical pr
    534 bytes (62 words) - 12:01, 17 March 2017
  • ...>; (f) <b>gravity</b> and <b>geodesy</b> (the Earth&#x2019;s gravitational field and the size and form of the Earth); (g) <b>atmospheric electricity</b> and
    2 KB (230 words) - 07:27, 16 March 2017
  • {{#category_index:G|geothermal field}}
    281 bytes (34 words) - 11:24, 7 June 2018
  • ...scalar difference between the total and horizontal gradients of a magnetic field. It increases the lateral resolution and amplitude of thin-dike anomalies a
    356 bytes (47 words) - 06:16, 16 February 2017
  • ...ient in an arbitrary direction, as the horizontal gradient of the magnetic field. See also [[Special:MyLanguage/Dictionary:tensor_gradient|''tensor gradient
    1 KB (174 words) - 12:53, 1 February 2017
  • ...lar arrangement. The direction with respect to the Earth&#x2019;s magnetic field is a factor in interpretation. <b>2</b>. A three-arm torsion balance that i
    980 bytes (147 words) - 06:01, 17 February 2017
  • ...e force is a vector directed toward the attracting mass. The gravitational field ''g'' (also a vector, often called the <b>acceleration of gravity</b>) is t
    992 bytes (158 words) - 07:28, 17 February 2017
  • ...t mass from infinity to a given point against gravitational forces. In the field of a point mass ''m'' a distance ''r'' away, this is &#x03B3;''m''/''r'', w
    420 bytes (64 words) - 07:54, 17 February 2017
  • ...on between bodies because of their masses. Usually measured as the gravity field of the Earth that varies from about 978 000 mGal (9.78 m/s<sup>2</sup>) at
    526 bytes (66 words) - 07:47, 17 February 2017
  • ...as with a torsion balance), but usually the difference between the gravity field at two points is measured (as with a ''[[Special:MyLanguage/Dictionary:grav
    722 bytes (105 words) - 06:10, 22 February 2017
  • A method of emphasizing anomalies of a certain size in a potential-field map. A grid (usually square or triagonal) is drawn on a contour map and val
    931 bytes (137 words) - 14:25, 23 February 2017
  • A method of smoothing sharp irregularities in potential-field measurements that arise from very shallow sources. The average of values a
    392 bytes (56 words) - 14:22, 23 February 2017
  • ...)|''Henry'']] (q.v.), the SI unit of inductance. <b>2</b>. The magnetizing field vector. <b>3</b>. See [[Special:MyLanguage/Dictionary:H-type_section|''H-ty
    319 bytes (42 words) - 17:01, 28 November 2020
  • ...strip of metal when it carries a current when located in a strong magnetic field. Named for its discoverer, Edwin Herbert Hall (1855&#x2013;1938), American
    278 bytes (39 words) - 14:42, 18 August 2016
  • ...ing or halo of an opposite sign around an anomaly, reflecting the opposite field curvature around the periphery of the anomaly. Halos do not represent separ
    555 bytes (77 words) - 16:32, 22 July 2017
  • ...nd is used in calibration of magnetometers and nulling an ambient magnetic field for magnetic measurements. Named for Hermann Ludwig von Helmholtz (1821&#x2
    557 bytes (82 words) - 15:50, 23 July 2017
  • ...> is the wavespeed, and <math> \Psi (\boldsymbol{x},t) </math> is the wave field.
    2 KB (271 words) - 15:26, 5 January 2021
  • An alternative to vibroseis correlation for compressing vibrator field data. The vibrator&#x2019;s baseplate or reaction-mass&#x2019;s acceleratio
    745 bytes (94 words) - 14:11, 24 July 2017
  • ...ves to the neighboring atom. The apparent movement of holes in an electric field is equivalent to an electric current.
    483 bytes (76 words) - 13:38, 1 July 2016
  • A model used in calculating potential-field effects; a small-diameter horizontal cylinder so long that the ends of the
    471 bytes (71 words) - 14:03, 25 July 2017
  • ...separated by a constant distance are moved over a survey area. The primary field is nulled and then in-phase and quadrature components are measured. Also ca
    533 bytes (72 words) - 14:22, 25 July 2017
  • ...w members on such a program. <b>3</b>. Slang for an expert in a particular field.
    321 bytes (52 words) - 00:37, 21 December 2016
  • ...ed young geophysicist who has made several impressive contributions to the field of seismic imaging and yet is very modest about his own accomplishments. ...virtual sources in the subsurface, without the need of having actual wave field recordings in a borehole. Again he is showing his highly innovative researc
    6 KB (831 words) - 15:09, 25 September 2015
  • ...agnetism that is retained is called '''remanent magnetism'''. The magnetic field intensity required to reduce the remanent magnetization to zero is the '''c
    869 bytes (131 words) - 16:23, 5 May 2016
  • ...l horizontal direction), the <b>wave impedance</b> (<b>Cagniard impedance, field impedance</b>, or <b>surface impedance</b>) ''Z''<sub>''S''</sub> is:
    2 KB (326 words) - 15:44, 7 March 2017
  • A constant which, when multiplied by certain measurements made on potential-field anomalies, gives an estimate as to the depth of the anomalous mass (usually
    361 bytes (53 words) - 15:20, 20 December 2011
  • ...a magnetizable body becomes magnetized by merely placing it in a magnetic field. ...ss by which a body becomes electrified by merely placing it in an electric field.
    968 bytes (157 words) - 23:28, 18 January 2017
  • ...current (also called <b>ground loop</b>) produces an alternating magnetic field that causes a current in a receiving coil; the current is nearly proportion
    2 KB (246 words) - 21:33, 4 January 2020
  • ...lied only to electromagnetic methods for which the receiver is in the near-field (or induction zone) of the transmitter.
    377 bytes (53 words) - 16:26, 8 April 2019
  • Normalized measurements of the electric field using an inductive (ungrounded loop) source carrying a time-varying current
    401 bytes (48 words) - 14:44, 10 April 2019
  • A (usually) fixed, remote electrode that is very far from roving field surveying electrodes. Ideally, the infinite electrode is located far enough
    371 bytes (48 words) - 07:05, 30 July 2018
  • ...points are at the same locations (including elevations) as those of actual field stations.
    288 bytes (39 words) - 23:21, 18 January 2017
  • ...ic field'']] and [[Special:MyLanguage/Dictionary:magnetic_field|''magnetic field'']].
    1 KB (154 words) - 23:24, 10 February 2017
  • {{#category_index:I|International Geomagnetic Reference Field (IGRF)}} ...armonics. The IGRF is subtracted from observed data to determine the local field.
    436 bytes (55 words) - 20:37, 27 February 2017
  • <b>1</b>. The magnitude of a potential field U surrounding a unit element varies inversely as the square of the distance ...10<sup>&#x2013;7</sup>&#x0020;webers/amperemeter; and to an electrostatic field where the element ''m'' is an electrical charge of ''m'' coulombs and ''k''
    1 KB (211 words) - 20:29, 7 February 2017
  • (in vur&#x2019; zh&#x2202;n or in vur&#x2019; sh&#x2202;n) Deriving from field data a model to describe the subsurface that is consistent with the data; d
    1 KB (178 words) - 21:37, 7 February 2017
  • ...ns in an electric field, measured by the ratio of ion velocity to electric-field strength.
    234 bytes (32 words) - 14:43, 8 February 2017
  • ...A}</math> is conservative and can be expressed as the gradient of a scalar field <math>\phi</math>, <math>\mathbf{A} = \nabla{\phi}</math>.
    414 bytes (62 words) - 16:58, 14 February 2017
  • Maps (charts) showing the elements of the geomagnetic field.
    186 bytes (22 words) - 19:06, 24 February 2017
  • ...d magnetization (product of susceptibility and the Earth&#x2019;s magnetic field strength). A large <b>Q</b> indicates that the magnetic material will tend
    473 bytes (67 words) - 19:58, 30 March 2017
  • (la plas&#x2019;) A differential equation that describes field behavior in free space. The <b>Laplacian</b> <math>{\nabla}^2 U</math> of a
    1 KB (138 words) - 19:25, 1 July 2020
  • ...arth&#x2019;s field). Radio-frequency energy at right angles to the steady field will be absorbed because of resonance when the RF-frequency equals the prec
    1,007 bytes (126 words) - 15:40, 7 September 2017
  • ...orth-south correction to magnetic data to remove the Earth&#x2019;s normal field.
    1 KB (160 words) - 21:18, 7 October 2017
  • ...gives the direction of an induced emf in a conductor that cuts a magnetic field. See Figure [[Special:MyLanguage/Dictionary:Fig_I-3|I-3]].
    275 bytes (39 words) - 20:30, 15 November 2017
  • ...&#x2202;z) An induced emf is in such a direction as to generate a magnetic field that opposes the change which induced it. Named for Heinrich Friedrich Emil
    302 bytes (46 words) - 10:56, 16 March 2020
  • ...ational fields, etc. See [[Special:MyLanguage/Dictionary:field_intensity|''field intensity'']].
    614 bytes (95 words) - 18:30, 26 August 2017
  • ...taken to be equiphase along the wire. In the near-field zone the magnetic field varies inversely with distance for a line source, inversely with distance s
    934 bytes (151 words) - 18:32, 26 August 2017
  • <b>1</b>. Field observations which begin and end at the same point with a number of interve
    794 bytes (119 words) - 13:53, 17 April 2019
  • ..., (d) the direction of the observations with respect to the Earth&#x2019;s field.
    630 bytes (98 words) - 11:17, 13 July 2017
  • ...l_Geomagnetic_Reference_Field_(IGRF)|''International Geomagnetic Reference Field (IGRF)'']] (q.v.), (g) inclination and declination, and (h) cultural effect
    625 bytes (81 words) - 12:25, 30 July 2017
  • <b>1</b>. The current loop that is the elementary source of a magnetic field. The current may be free or bound (as in electron orbitals in magnetized ma
    738 bytes (107 words) - 12:48, 30 July 2017
  • See [[Special:MyLanguage/Dictionary:magnetic_field_of_the_Earth|''magnetic field of the Earth'']].
    226 bytes (28 words) - 13:27, 30 July 2017
  • ...orizontal. Generally not coincident with the Earth&#x2019;s equator. Local field irregularities are often ignored. Also called the <b>aclinic line</b>.
    425 bytes (63 words) - 13:52, 30 July 2017
  • {{#category_index:M|magnetic field}} ...w surrounds an electric current. <b>H</b> is sometimes called the magnetic field. See Figure [[Special:MyLanguage/Dictionary:Fig_M-1|M-1]].
    3 KB (465 words) - 19:31, 30 July 2017
  • {{#category_index:M|magnetic field of the Earth}} ...[[Special:MyLanguage/Dictionary:Fig_M-2|M-2]]. See also ''normal magnetic field''.
    850 bytes (140 words) - 18:44, 1 August 2017
  • ...over measuring the field itself: (a) it reduces noise because of temporal field changes, (b) enhances shallow anomalies, and (c) improves lateral resolutio
    457 bytes (56 words) - 16:17, 15 August 2017
  • ...d by galvanic currents. Involves measuring the normalized primary magnetic field <math>H_{N},</math> where <math>H_{P}</math> is the steady-state magnetic field amplitude measured at a single transmitter frequency, <math>H_{P}'</math> i
    1 KB (192 words) - 16:17, 15 August 2017
  • See [[Special:MyLanguage/Dictionary:magnetic_field|''magnetic field'']].
    200 bytes (21 words) - 16:17, 15 August 2017
  • ...ld strength; see [[Special:MyLanguage/Dictionary:magnetic_field|''magnetic field'']].
    252 bytes (25 words) - 16:17, 15 August 2017
  • ...rating until a satisfactory degree of fit between model field and observed field is achieved. Sedimentary anomalies are also interpreted, especially with hi
    2 KB (240 words) - 16:18, 15 August 2017
  • The direction of the horizontal component of the Earth&#x2019;s magnetic field; the direction of magnetic north.
    239 bytes (31 words) - 16:18, 15 August 2017
  • ...agnetic induction <math display="inline">\mathbf{B}</math> to the inducing field strength <math display="inline">\mathbf{H}</math>; denoted by the symbol <m
    918 bytes (134 words) - 17:24, 10 April 2019
  • ...See [[Special:MyLanguage/Dictionary:magnetic_field_of_the_Earth|''magnetic field of the Earth'']]. <b>2</b>. The pole strength of a magnetized bar of cross-
    926 bytes (143 words) - 16:48, 15 August 2017
  • ...magnetic pole to the point. A <b>magnetic vector potential</b> is a vector field whose curl gives the magnetic induction.
    663 bytes (102 words) - 16:48, 15 August 2017
  • ...an (124 to 83 Ma) during which no reversals of the Earth&#x2019;s magnetic field occurred, so that ocean-basin magnetic stripes are absent.
    352 bytes (46 words) - 16:48, 15 August 2017
  • The anomaly produced by a body is the same if the induced field and magnetization directions are interchanged.
    267 bytes (33 words) - 16:48, 15 August 2017
  • ...nts (electron spin and/or nuclear spin) of atoms with an external magnetic field. Magnetic resonance is basic to the operation of the ''[[Special:MyLanguage
    717 bytes (82 words) - 16:48, 15 August 2017
  • A period of rapid, irregular, transient fluctuations of the magnetic field that are greater in magnitude, more irregular, and of higher frequency than
    695 bytes (96 words) - 18:03, 1 August 2017
  • ...tructure, or of determining depth to basement. Differences from the normal field are attributed to the distribution of materials having different susceptibi
    505 bytes (69 words) - 11:11, 2 August 2017
  • ...val of remanence (if its direction is known), change from total field to a field component or vice-versa, etc.
    430 bytes (62 words) - 23:34, 2 March 2017
  • ...b>M</b> or <b>I</b>. A measure of the effect of the medium on the magnetic field <b>B</b> when subject to a magnetizing force <b>H</b>:
    1 KB (174 words) - 22:26, 3 March 2017
  • ...own as magnetic field strength. See [[Dictionary:magnetic_field|''magnetic field'']] and Figure [[Dictionary:Fig_M-1|M-1]].
    303 bytes (42 words) - 22:44, 3 March 2017
  • Changes in the polarity of the Earth&#x2019;s magnetic field from its present polarity have occurred a number of times in the Earth&#x20
    398 bytes (57 words) - 22:49, 3 March 2017
  • ...ucting fluid (such as a liquid metal or an ionized gas) through a magnetic field. Also called <b>hydromagnetics</b>.
    360 bytes (56 words) - 23:29, 7 March 2017
  • ...lf-exciting dynamo and is responsible for the Earth&#x2019;s main magnetic field.
    304 bytes (42 words) - 22:57, 3 March 2017
  • ...re the total-field intensity and cesium magnetometers measure the absolute field and achieve 0.001 nT accuracy. Vector and vertical-component airborne magne
    888 bytes (102 words) - 23:33, 7 March 2017
  • ...itude and ''H''<sub>''po''</sub>=predicted uniform ground primary magnetic field. Involved in measurements of [[Dictionary:magnetic_induced_polarization_(MI ...conductivity distribution is surveyed by measuring the secondary magnetic field arising from current flow. The magnetic measurement direction is perpendicu
    1,018 bytes (143 words) - 22:20, 8 March 2017
  • The space pervaded by the Earth&#x2019;s magnetic field, usually extending to more than 10 Earth radii on the sunlit side and to 40
    345 bytes (48 words) - 22:56, 8 March 2017
  • The use of reversals of the Earth&#x2019;s magnetic field to determine stratigraphic age, or the use of the orientation of remanent m
    499 bytes (67 words) - 23:09, 8 March 2017
  • A 2D convolution often applied to potential-field maps, whereby each point on the map grid is replaced by a weighted sum of t ...tical-derivative maps may be made. Other weighting schemes can be used for field continuation, wavelength filtering, etc. See [[Special:MyLanguage/Dictionar
    1 KB (203 words) - 22:06, 20 March 2017
  • ...cies according to mass/charge ratio by separating their ions in a magnetic field.
    274 bytes (36 words) - 17:09, 13 February 2017
  • ...eld intensity, <b>H</b> is the magnetizing force, <b>B</b> is the magnetic field strength, <b>D</b> is the electric displacement, <b>J</b> is the current de
    2 KB (293 words) - 09:42, 31 August 2020
  • ...between induced-current dipole moment per unit volume (''P'') and electric field (''E''):
    2 KB (302 words) - 13:12, 6 March 2017
  • A field-effect transistor or integrated circuit characterized by extremely high inp
    238 bytes (26 words) - 13:12, 6 March 2017
  • ...ns between plasma emitted from the Sun (solar wind) and the Earth&#x2019;s field. Micropulsations also result from lightning strikes. Micropulsations are cl
    854 bytes (113 words) - 14:38, 29 November 2018
  • ...smic)'']]. <b>2</b>. Movement of ions in a solution because of an electric-field gradient; called <b>mobility</b>. <b>3</b>. Movement of hydrocarbons betwee
    1 KB (130 words) - 21:22, 30 March 2017
  • <b>1.</b>&#x0020;The velocity of charge carriers per unit electric field. Usually refers to movement of ions in a solution. Also called <b>migration
    316 bytes (44 words) - 12:38, 10 April 2019
  • {{#category_index:N|near-field}} ...depths'']] (q.v.). Compare [[Special:MyLanguage/Dictionary:far-field|''far field'']]. See Sheriff and Geldart (1995, 48).
    857 bytes (119 words) - 04:25, 1 August 2017
  • ...y, ''n'' may be determined by a gradiometer arrangement or calculated from field measurements.
    301 bytes (41 words) - 20:31, 30 June 2020
  • {{#category_index:N|nondipole field}} See [[Special:MyLanguage/Dictionary:magnetic_field_of_the_Earth|''magnetic field of the Earth'']].
    223 bytes (27 words) - 18:39, 18 March 2018
  • <b>1</b>. Subtracting the normal magnetic field from magnetic data. <b>2</b>. Normalizing the ratio of successive Turam rea
    378 bytes (52 words) - 17:07, 14 January 2018
  • {{#category_index:N|normal magnetic field}} ...roughly aligned with the present-day field. Antonym: <b>reversed magnetic field</b>.
    797 bytes (110 words) - 15:22, 11 December 2017
  • ...tion does not occur instantaneously but grows with time. When the exciting field is removed, the spins gradually return to their original state. The rate of
    1 KB (166 words) - 21:51, 22 October 2017
  • ...ct on the measurements. Hydrogen nuclei are aligned with a static magnetic field and then disturbed by a radio-frequency pulse that involves transverse magn
    2 KB (321 words) - 20:46, 22 October 2017
  • ...esonance; the resonance frequency is proportional to the absolute magnetic-field strength. See also [[Special:MyLanguage/Dictionary:proton-precession_magnet
    472 bytes (47 words) - 22:29, 6 November 2017
  • ...rge of the recording on a seismic crew. Sometimes the observer is also the field manager and sometimes principally an electronic technician. <b>2</b>. The o
    347 bytes (51 words) - 21:06, 27 October 2017
  • ...nit of magnetic-field intensity (in the cgs-emu system) in free space; the field that would exert a force of 1 dyne on a unit magnetic pole. Equal to 1 ampe
    459 bytes (66 words) - 13:07, 8 April 2019
  • ...supplying current. <b>2</b>. The time during which the charging current or field from a pulse-type transmitter is observed at the receiver.
    336 bytes (47 words) - 11:24, 21 April 2019
  • ...y sensitive (&#x2248;0.001 nT). They measure absolutely the total magnetic field.
    502 bytes (66 words) - 12:36, 10 November 2017
  • ...Resonance of paramagnetic free electrons results from excitation by a VHF field.
    476 bytes (67 words) - 12:41, 14 November 2017
  • ...r materials to determine the intensity and direction of the Earth&#x2019;s field at the time the materials were magnetized. It has as adjuncts <b>archeomagn
    581 bytes (81 words) - 15:12, 4 November 2017
  • {{#category_index:P|parallel field}} A uniform field in which current flow lines or equipotential surfaces are parallel.
    207 bytes (26 words) - 17:06, 8 November 2017
  • ...y. Paramagnetism usually contributes only a few nanoteslas to the magnetic field at the Earth&#x2019;s surface. Compare [[Special:MyLanguage/Dictionary:diam
    589 bytes (71 words) - 18:00, 8 November 2017
  • ...y is varied. Observations can be made at different times after the primary field is extinguished. Used to resolve resistivity layering assuming that the lay
    595 bytes (80 words) - 19:02, 8 November 2017
  • The group working together to carry out a geophysical field project. Also called <b>crew</b> or <b>troop</b>.
    224 bytes (32 words) - 13:43, 11 November 2017
  • ...party chief (or supervisor, if no party chief), who is responsible for the field work.
    238 bytes (33 words) - 13:51, 11 November 2017
  • <b>1</b>. The ratio of the magnetic field <b>B</b> to the magnetizing force <b>H.
    1 KB (204 words) - 15:22, 7 March 2018
  • See [[Special:MyLanguage/Dictionary:magnetic_field|''magnetic field'']].
    208 bytes (23 words) - 15:49, 7 March 2018
  • Permission from a landowner for a geophysical field party to work on his land.
    194 bytes (26 words) - 16:13, 7 March 2018
  • A measurement made on profiles across potential-field (especially magnetic) anomalies, with the objective of determining the dept
    733 bytes (104 words) - 11:38, 20 April 2021
  • ...ed by surface conditions rather than the production ability of the well or field.
    303 bytes (43 words) - 15:59, 4 March 2019
  • Rocks become magnetized according to the direction of the Earth&#x2019;s field at the time of their formation. As the Earth&#x2019;s plates drift with tim
    791 bytes (116 words) - 16:24, 14 February 2019
  • ...ity can be determined by specified mathematical operations, as a potential field from which seismic displacement, velocity, etc. can be ascertained by diffe
    735 bytes (107 words) - 13:38, 9 April 2019
  • {{#category_index:P|potential field}} ...ch as gravity, magnetic, or electrical fields. For such fields, the vector field may be expressed as the gradient of some scalar potential or the curl of a
    416 bytes (59 words) - 12:54, 8 May 2019
  • {{#category_index:P|potential-field tilt}}
    198 bytes (21 words) - 14:47, 10 April 2019
  • ...magnetic or gravity potential function might give the magnetic or gravity field, or the divergence and curl of a seismic potential function might give the
    592 bytes (85 words) - 16:49, 12 August 2018
  • ...ector is the cross-product of the electric field strength and the magnetic field strength.
    334 bytes (47 words) - 13:13, 29 March 2019
  • ...em&#x2019; fa sis) <b>1</b>. Frequency filtering before processing (as in field recording) so as to emphasize certain frequencies compared to others. <b>2<
    378 bytes (50 words) - 10:57, 7 April 2019
  • ...e reservoir pressure has dropped appreciably, often early in the life of a field, to reduce pressure decline and increase ultimate oil recovery.
    341 bytes (47 words) - 16:52, 24 April 2019
  • {{#category_index:P|primary field}} The electromagnetic field that would be generated if the source were in free space.
    206 bytes (27 words) - 19:58, 11 July 2018
  • The ratio of electromagnetic field readings at two locations in the absence of conducting material. Also calle
    317 bytes (41 words) - 16:33, 8 April 2019
  • ...rface; <b>mapping</b>. Specifically, a resistivity, IP, or electromagnetic field method wherein a fixed electrode or antenna array is moved progressively al
    692 bytes (91 words) - 07:47, 13 July 2018
  • ...because of its spin. The nuclei precess about the Earth&#x2019;s magnetic field ''H'' at a frequency ''f''<sub>''L''</sub> (<b>Larmor frequency</b>), ...00 Hz. As the protons gradually relax into random orientation, the induced-field strength drops to zero. The rate of drop depends on interatomic forces and
    1 KB (181 words) - 21:20, 27 January 2018
  • The gravity field calculated from magnetic-field measurements by means of [[Special:MyLanguage/Dictionary:Poisson&#x2019;s_r
    506 bytes (61 words) - 17:17, 1 March 2018
  • {{#category_index:R|radiation field}} The far-field term in electromagnetic radiation, whose amplitude falls off with distance
    231 bytes (28 words) - 17:09, 22 January 2018
  • ...field of geotechnical engineering is a specialty of engineering, where the field of engineering geology is a specialty of geology.
    3 KB (428 words) - 16:06, 21 May 2017
  • ...</b>. A component that is in-phase, as the component of an electromagnetic field that is in-phase with some reference signal (such as the input voltage). Co
    497 bytes (69 words) - 17:57, 14 August 2018
  • ...that contains the amplifiers and recording gear for making a record in the field. The cab where the record is made is often called the <b>doghouse</b>. A do
    377 bytes (60 words) - 17:56, 14 August 2018
  • ...the <b>normal ratio</b> or <b>free air correction</b> (the electromagnetic-field gradient in the absence of perturbing conductive bodies). Used with the Tur
    403 bytes (54 words) - 12:13, 10 April 2019
  • ...rious magnetic field inclinations to what they would be with zero inducing-field inclination. Compare [[Special:MyLanguage/Dictionary:reduction_to_the_pole_
    363 bytes (46 words) - 22:59, 14 September 2018
  • ...x2019;s magnetic field to what they would have looked like if the magnetic field had been vertical. Reduction to the pole removes anomaly asymmetry caused b
    708 bytes (105 words) - 21:47, 11 August 2018
  • ...wavelength components) ignoring anomalies of smaller size. Often it is the field produced by density variations within or below basement. See [[Special:MyLa
    569 bytes (75 words) - 01:18, 11 June 2017
  • In telluric surveying, electric-field vectors are observed at a field station (<math>E_{u}</math> and <math>E_{v}</math>) and also simultaneously
    812 bytes (126 words) - 01:21, 11 June 2017
  • ..., the magnetization after application and subsequent removal of a magnetic field; it is not involved in paleomagnetism, except for the effect of lightning c
    2 KB (253 words) - 01:25, 11 June 2017
  • Magnetotelluric survey conducted with either an electric field or magnetic field reference located a few kilometers from the point of measurement. The refer
    836 bytes (114 words) - 01:26, 11 June 2017
  • ...tion along the flight path). May also include measurements of the magnetic field or other nonradiation measurements.
    3 KB (420 words) - 01:26, 11 June 2017
  • ...ertain parts of the geology is calculated and subtracted from the observed field; (e) upward continuation, which attenuates the effects of shallow sources.
    1 KB (197 words) - 15:48, 17 July 2017
  • ...cal current. Also called <b>specific resistance</b>. The ratio of electric-field intensity to current density. The reciprocal of resistivity is <b>conductiv
    581 bytes (73 words) - 15:49, 17 July 2017
  • ...ic structural feature and/or stratigraphic condition. Different pools in a field may be separated vertically by impermeable rock or laterally by structural
    4 KB (533 words) - 15:50, 18 July 2017
  • {{#category_index:R|reversed magnetic field}} See [[Special:MyLanguage/Dictionary:normal_magnetic_field|''normal magnetic field'']].
    219 bytes (24 words) - 16:11, 27 July 2017
  • ...at gives the direction of torques and the force on a current in a magnetic field. See Figure [[Special:MyLanguage/Dictionary:Fig_I-3|I-3]].
    300 bytes (41 words) - 14:44, 8 August 2017
  • The field method for common-midpoint recording; see [[Special:MyLanguage/Dictionary:c
    254 bytes (27 words) - 14:49, 8 August 2017
  • {{#category_index:R|rotary-field electromagnetic method}}
    222 bytes (23 words) - 14:51, 8 August 2017
  • ...<b>E</b>xperience, a summer program to give university geophysics students field experience and opportunity to acquire research data. See Jiracek et al. (20
    312 bytes (48 words) - 10:34, 24 February 2017
  • Determining the gravity field at the sea surface from [[Special:MyLanguage/Dictionary:satellite_altimetry
    358 bytes (45 words) - 15:39, 3 May 2017
  • Measuring the Earth&#x2019;s magnetic field with satellites at about 400 km to a resolution of 1&#x2013;2 nT.
    238 bytes (31 words) - 15:45, 3 May 2017
  • ...a nonlinear quantity. <b>2</b>. The maximum magnetization as the magnetic field is increased. <b>3</b>. Apparent nonlinear resistivity or IP behavior due t
    1 KB (172 words) - 00:58, 15 March 2017
  • ...h states that, for two sources with different equivalent cavities, the far-field wavelets are related by the cube root of the ratio of the source energies.
    692 bytes (104 words) - 23:25, 2 November 2017
  • ...medium through which the energy is traveling. A perturbation of a uniform field caused by irregularities in the medium. A <b>scattered wavefield</b> is the
    578 bytes (85 words) - 00:48, 3 November 2017
  • {{#category_index:S|Schmidt field balance}} ...ife-edge. The torque of the magnet trying to align with the Earth&#x2019;s field is balanced by a gravitational torque because the magnetometer is not pivot
    380 bytes (57 words) - 09:46, 3 November 2017
  • <b>1</b>. To go to the field and look over an area, perhaps in the course of planning a geophysical surv
    263 bytes (39 words) - 12:00, 3 November 2017
  • {{#category_index:S|secondary field}} ...In methods where galvanic energization of the earth is used, the secondary field is that resulting from the difference between the actual current system in
    506 bytes (74 words) - 20:42, 9 March 2017
  • ...etics, the voltage induced in the receiver by a secondary induced magnetic field.
    447 bytes (62 words) - 16:10, 13 September 2017
  • A map of the second vertical derivative of a potential field, such as gravity. Such maps tend to emphasize local anomalies and isolate t
    564 bytes (78 words) - 17:42, 3 November 2017
  • ...2019; The &#x2018;&#x2018;secular variation of the Earth&#x2019;s magnetic field&#x2019;&#x2019; often means periods greater than 30 to 300 years. Geomagnet
    474 bytes (70 words) - 15:03, 15 January 2018
  • ...dynamos may explain the periodic reversals of the Earth&#x2019;s magnetic field.
    549 bytes (85 words) - 17:29, 1 September 2017
  • ...t of cables, geophones, source points, etc., for making a recording in the field. <b>2</b>. The selection of parameters that govern the action of algorithms
    342 bytes (48 words) - 14:47, 5 February 2018
  • ...18;&#x2018;atmospheric&#x2019;&#x2019; fluctuations of the electromagnetic field, generally at frequencies from 1 to 10<sup>5</sup>&#x0020;Hz, caused by lig
    461 bytes (54 words) - 01:19, 17 August 2018
  • Thinking through a field program before starting it; calculating the results which may be expected,
    382 bytes (54 words) - 18:41, 27 April 2017
  • ...-simulation</b>. <b>3</b>. Specifically, a computer model of a hydrocarbon-field production that allows one to predict what will happen given various scenar
    890 bytes (138 words) - 12:09, 1 June 2017
  • ...aleomagnetism studies, this softer magnetization is removed by alternating-field demagnetization in order to isolate harder remanent magnetism.
    408 bytes (47 words) - 15:11, 8 May 2018
  • ...ind variations. The effect is to produce a time-variable external magnetic field.
    377 bytes (47 words) - 15:06, 8 May 2018
  • ...h lines of force in a vector field originate; a mass for the gravitational field. Opposite of <b>sink</b>.
    435 bytes (67 words) - 16:15, 12 March 2018
  • ...natural ground voltage observed between nearby nonpolarizing electrodes in field surveying. In many mineralized areas this is caused by electrochemical reac
    2 KB (346 words) - 16:05, 12 March 2018
  • ...ier analysis'']] (q.v.). <b>2</b>. Examination of the spectra of potential-field data to locate changes in the slope of a graph of the logarithm of the powe
    525 bytes (69 words) - 23:33, 19 August 2018
  • ...g diffraction, mode conversion, and scattering). <b>2</b>. The decrease in field strength (flux density) for gravity, magnetic, and similar fields where the
    1 KB (164 words) - 20:44, 5 September 2017
  • ...ge to determine the strength and direction of the sample&#x2019;s magnetic field. Used for paleomagnetic studies of small samples.
    323 bytes (45 words) - 09:43, 8 September 2017
  • ...idual. By extension, a smooth surface used to represent a regional gravity field.
    1 KB (164 words) - 10:09, 25 June 2018
  • ...sla, and are used in magnetotelluric and controlled-source electromagnetic field techniques. See Clarke (1974) and Weinstock and Overton (1981).
    2 KB (256 words) - 08:47, 8 June 2018
  • ...nary:downward_continuation|''Downward continuation'']] (q.v.) of potential field measurements after removing high spatial frequencies, which otherwise would
    348 bytes (38 words) - 13:55, 28 October 2017
  • <b>1</b>. A marker used by field parties to locate gravity stations, source points, geophone locations, surv
    538 bytes (85 words) - 05:36, 17 October 2017
  • <b>(b) First-break statics</b> are the most common method of making field (or first-estimate) static corrections, especially when using surface sourc
    4 KB (550 words) - 02:42, 27 October 2017
  • {{#category_index:S|static field}} The field of an electric dipole that falls off with distance ''r'' as 1/''r''<sup>3</
    212 bytes (29 words) - 10:49, 27 October 2017
  • {{#category_index:S|stationary field}} A physical field that does not vary with time.
    172 bytes (22 words) - 05:46, 30 October 2017
  • where <b>A</b> is a vector field, <b>''dl''</b> is a line element, and <b>''ds''</b> is a surface element.
    552 bytes (88 words) - 13:07, 22 January 2018
  • A temporary, considerable disturbance of a geophysical field, e.g., a [[Special:MyLanguage/Dictionary:magnetic_storm|''magnetic storm'']
    288 bytes (34 words) - 10:03, 19 October 2017
  • A wire in a magnetic field that gets deflected proportional to the current flowing through it. The sha
    362 bytes (53 words) - 10:49, 4 June 2018
  • ...ayer</b>, a surface density distribution which produces the same potential field outside the closed surface as does the mass distribution over the volume co
    523 bytes (73 words) - 08:47, 8 June 2018
  • Range geothermal systems, Part 1: The E-field radio telluric method: Ph.D. Thesis, Univ. Calif. at Berkeley, ...nsional seismic interpretation and fault-sealing investigations, Nun River Field, Nigeria: AAPG
    40 KB (5,282 words) - 17:45, 23 February 2016
  • ...he SI prefix for 10<sup>12</sup>. <b>2</b>. Tesla, the SI unit of magnetic field strength; equals 1 weber/m<sup>2</sup> or 1 N/A.m. <b>3</b>. Period; the ti
    419 bytes (64 words) - 15:52, 23 June 2018
  • ...;s width is more than 50 times its thickness. Used as a model in potential field calculations. See Figure [[Special:MyLanguage/Dictionary:Fig_M-15|M-15]].
    414 bytes (61 words) - 18:41, 11 June 2018
  • .... This law applies over a greater current-density range than is used in IP field measurements.
    455 bytes (65 words) - 12:02, 30 June 2020
  • .... This law applies over a greater current-density range than is used in IP field measurements.
    374 bytes (55 words) - 12:03, 30 June 2020
  • ...y variation with depth. See Talwani ''et al.'' (1959). <b>2</b>. Potential-field models of polygonal cross-section and very great (infinite) strike length.
    509 bytes (71 words) - 15:55, 23 June 2018
  • ...b>R</b>ecovery; a process for removing the effects of variable gain in the field recording and adjusting the amplitude to compensate for spherical divergenc
    327 bytes (49 words) - 23:30, 20 August 2018
  • .... Telluric currents originate in variations of the Earth&#x2019;s magnetic field that are induced by ionospheric changes.
    353 bytes (49 words) - 23:09, 21 August 2018
  • A method in which orthogonal components of the horizontal electric field associated with currents induced in the earth by natural sources of energy
    909 bytes (133 words) - 23:10, 21 August 2018
  • A reconnaisance magnetotelluric method where the magnetic field at one site is used with the telluric fields measured at neighboring sites.
    305 bytes (40 words) - 23:10, 21 August 2018
  • ...s are recorded and analyzed. Also known as <b>inline tellurics</b> or <b>E-field-ratio tellurics</b>. See Beyer (1977).
    979 bytes (141 words) - 23:11, 21 August 2018
  • ...sor that defines the rate of change of the three components of a potential-field gradient: For the field ''F'', the rate of change in the ''j'' direction of the gradient in the ''i
    621 bytes (96 words) - 16:34, 10 May 2017
  • ...fields. The vector electric field <b>E</b> and the vector current-density field <b>J</b> are related by the resistivity tensor &#x03C1; in which <b>E</b>=&
    427 bytes (67 words) - 16:36, 10 May 2017
  • See [[Special:MyLanguage/Dictionary:magnetic_field_of_the_Earth|''magnetic field of the Earth'']] and [[Special:MyLanguage/Dictionary:geophysics|''geophysic
    293 bytes (33 words) - 12:10, 26 August 2017
  • ...<math>c_{44}/\rho</math>. This makes determination of the parameters from field data significantly easier.
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  • ...iation by free or loosely bound charged particles. The transverse electric field of the radiation accelerates the charged particles which then re-radiate th
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  • ...as opposed to determining components along separated survey lines. Various field arrangements are used; see Figure [[Special:MyLanguage/Dictionary:Fig_T-4|T
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  • ...suring second derivatives of the gravitational potential. In a non-uniform field, the forces on equal masses at opposite ends of a horizontal beam suspended
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  • ...measurement of the secondary field and that measurements of the secondary field as a function of time are equivalent to continuous-wave measurements over a
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  • Seismic field recording in which a single large geophone group (or a small number of grou
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  • ...)_method|''magnetotelluric'']] (q.v.) data, the mode in which the electric field is parallel to strike. Also called <b>E-polarization</b>. See also [[Specia
    557 bytes (74 words) - 19:58, 11 August 2017
  • ...ric'']] (q.v.) data, transverse magnetic is the mode in which the magnetic field is parallel to strike. Also called <b>H-polarization</b>. See also [[Specia
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  • ...lometers long and energized at 100 to 800 Hz. Measurements are made of the field-strength ratio and phase difference of the voltages induced in two receivin
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  • ...cording with two or more sets of instruments simultaneously under the same field conditions, or of processing with different algorithms or by different comp
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  • Potential field modeling where end corrections are applied to the field of a model that extends to infinity perpendicular to the line.
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  • ...ng, or frequency for various models. Type curves are used for interpreting field data where the conditions of the models appear to hold. Abscissa and ordina
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  • ...on involves the application of Green&#x2019;s theorem and is unique if the field is completely known over the lower surface (which could be true for gravity
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  • The derivative of the velocity field. Sometimes means a lateral (horizontal) change in velocity, sometimes a ver
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  • The component of the total-intensity field in the vertical direction.
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  • ...e weight drops, vibrations, pops, etc., are combined to give in effect the field record which would have resulted from a much stronger source. <b>2</b>. Add
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  • ...d by nulling one of two small orthogonal coils in the plane of the primary field. See also Figure [[Special:MyLanguage/Dictionary:Fig_E-7|E-7]]. <b>3</b>. A
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  • A vibroseis field record consists of the superposition of many long reflected wavetrains and
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  • ...netization direction of domains with rather high energy barriers. The weak field of the Earth acts to bias the direction of these jumps.
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  • <b>1</b>. The ratio of orthogonal components of electric-field to magnetic-field intensities. See [[Special:MyLanguage/Dictionary:impedance|''impedance'']].
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  • ...are classified as TE, TM, or TEM to indicate that the electric or magnetic field or both have transverse components only.
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  • ...s in paramagnetism). A weak external field can orient the domains with the field direction, and, if strong enough, can align the domains irreversibly, makin
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  • The apparent westward drift of the geomagnetic field at a rate of about 0.2&#x00B0; per year. See Figure [[Special:MyLanguage/Di
    276 bytes (39 words) - 12:04, 31 January 2018
  • ...pectral lines in the radiation emitted by atoms or molecules in a magnetic field. Named for Pieter Zeeman (1865&#x2013;1943), Dutch physicist.
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  • ...#x0394;<b>L&#x0020;X&#x0020;r</b>)/''r''<sup>3</sup>, the magnitude of the field being &#x0394;''B''=10<sup>&#x2013;7</sup>(sin&#x0394;''L''/''r''<sup>2</su
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  • ...y</b> examples. (<b>a,b</b>) Dip-magnitude and dip-azimuth maps, Nun River field, Nigeria (from Bouvier et al., 1989). (<b>c,d</b>) Coherence and amplitude
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  • <b>Dipmeter log. (a)</b> Log of field data. <b>(b)</b> Calculated dipmeter log or <b>tadpole plot</b>. (Courtesy
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  • ...s field. The current through the nulling coil is a measure of the magnetic field strength.
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  • <b>Hysteresis</b> loop. As an applied field ''H'' is changed, the magnetization ''B'' lags behind.
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  • <b>Models of simple types</b> often used in potential-field interpretation.
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  • Time-varying components of the <b>magnetic field of the Earth</b>.
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  • ...quency, which can be measured to give the intensity of the steady magnetic field.
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  • ...andard frequency, and the time duration is a measure of the Earth&#x2019;s field.
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  • ...b>b</b>) Time variation in inclination and declination of the paramagnetic field at London, showing westward drift. (After Parasnis, 1961.)
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  • Marine <b>source waveforms</b>. Far-field waveforms generated by marine seismic sources. (<b>a</b>) Single air gun; (
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  • A <b>vector field</b> has values associated with every point in space (<b>d</b>).
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  • ...ukoilandgasdata.com/ UKOilandGasData] system (free registration required). Field data is available on media. ...cal) from CDA's [https://www.ukoilandgasdata.com/ UKOilandGasData] system. Field data (or P-Up data for the PGS survey) is also available on media.
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  • The waves that compose most of the secondary microseismic field are [[Rayleigh waves]]. Both water and solid Earth particles are displaced
    9 KB (1,380 words) - 17:35, 17 March 2015
  • ...anner. The gravity gradient is a symmetric, trace-free, second rank tensor field. In Cartesian coordinates, it can be represented as a 3x3 matrix, with the
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  • ...each model using inclinations of 0, 30, 45, 60 and 90 degrees and a total field of 50,000 nT. Additionally the fields were calculated using varying depths bishop5_mag_base_*_i** calculated magnetic field<br>
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  • A multi-component land 3D, 8.5 km<sup>2</sup> in area, complete with field data and observer's notes, and a low-frequency dataset, and a 3C-3D VSP, fr
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  • ...lorado School of Mines Reservoir Characterization Project] at their Postle Field study area. Four companion data sets have been created to evaluate [[Dicti
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  • ...ated to the geophysics of heavy oils, bitumen-related topics, along with a field trip to the oil sands at Fort McMurray in 2007. This led to the popular SEG
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  • general subject of structural geology as well as the more restricted field ...lt dome on the Texas Gulf Coast in 1924 and which identified the first oil field discovered by any geophysical method. So, it was natural for Nettleton to b
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  • ...al assets as vibrations and sound waves. Yet even Edwina, Scott's shop and field assistant and wife since 1921, contributed $800 to the birth of Petty Geoph ...d a deep-seated salt dome. Humble ventured to sink a well and found an oil field where Petty expected one. Impressed, the vice-president of exploration - no
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  • crew in California in order to get field experience.
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  • .../> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />A field visit was organized to Statoil R&D center in Rotvol, Trondheim. Visit inclu == Field Camps ==
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  • '''Petroleum engineering''' is a field of [[engineering]] concerned with the activities related to the production ...oir is developed and depleted, and usually they have the highest impact on field economics. Petroleum engineering requires a good knowledge of many other re
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  • ...uence]], a summary of the basic data processing sequence is presented with field data examples. There are three primary stages in seismic data processing; e
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  • technical papers on the gravitational field of the earth, geophysical ...hem qualified for this recognition in one of three ways. Some advanced the field significantly through technical contributions, others through their accompl
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  • depression, contracts for the first ten field crews were sold within a systems, recording cameras, and related practical field logistics.
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  • * The Delta field for this model is here: [http://to_be_created.html click here].
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  • In 1926, Cecil entered the emerging field of electronics by joining the In 1936, he became a field supervisor, which entailed pre-World War II
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  • in Dallas, Texas. He was at the Love Field Airport on his way to board been for many years a shining light in this field and his untimely
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  • He served as 3D field crew and quality control supervisor field crews operating in most of the petroleum- exploring
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  • ...Colombia. This intimate contact with day-to-day geophysical operations and field problems made a lasting imprint on Hewitt. He thus developed that valuable
    5 KB (775 words) - 23:49, 3 March 2022
  • ...he same way. Dr. Dobrin loved his field and believed in those pursuing his field. Long after taking the course I would see Dr. and Mrs. Dobrin at the art mu ...ently renamed Curtin University of Technology) became the home base of the Field Research Laboratory for the Allied Geophysical Laboratories of the Universi
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  • Field File number, sequential source number, and source/receiver
    3 KB (451 words) - 17:21, 2 December 2015
  • ...him to confirm the existence of the shear wave birefringence phenomenon in field recordings. He thereby provided the key to an entirely novel acquisition an
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  • ...was nothing here but open fields. Many times I would fly here, land in the field, tie the plane to the fence, spend the night with the family and fly somewh ...preliminary exploration for petroleum and I was recently told that an oil field had been found in Sudan based strictly on the magnetic data."
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  • United States. He supervised the field work of one of these in Brazoria County, Texas in the spring of 1924. A producing oil field came on stream in 1926—the first ever discovered by geophysics.
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  • ...n and its donors also fund student travel grants, leadership training, and field camps.
    16 KB (2,428 words) - 17:01, 17 April 2015
  • ...l comes from [https://www.osti.gov/biblio/6648186-north-blowhorn-creek-oil-field-stratigraphic-trap-black-warrior-basin-alabama North Blowhorn Creek]. The b ...1 Apr. 1984, https://www.osti.gov/biblio/6648186-north-blowhorn-creek-oil-field-stratigraphic-trap-black-warrior-basin-alabama.</ref> while also containing
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  • ...y-of-australia/conferences/010/010001/pdfs/81.htm Jackson Oil Field]. This field was discovered in 1981. Pipelines transport gas to the major markets of Bri
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  • Swan Hills Field is in the upper part of the Athabasca Basin is home to the vast hydrocarbon ...L.D.. (2001). Fault-controlled dolomitization at Swan Hills Simonette oil field (Devonian), deep basin west-central Alberta, Canada. Sedimentology. 48. 301
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  • ...Moreover, the Palo Duro Basin contains one small oil field, one small gas field, and eight additional oil pools surrounding the area<ref>Nicholson, John H.
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  • [[File:Wasson Basin Location.jpg|thumb|(Figure 1) Location of Wasson Field Basin in West Texas Permian Basin. Retrieved from https://peakoil.com/produ ...d drilled by the Honolulu Oil Corporation and Davidson Company, the Wasson field is a triangular-shaped oil and gas producing area that is 15 miles long and
    12 KB (1,717 words) - 19:36, 12 December 2020
  • ...the 1960s, there have been several developments over the years, including field exploration, seismic acquisition, exploration and development drilling, con
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  • ...ersity faculty. Four years later, an unexpected visit by Professor Richard Field, of Princeton, and William Bowie, of the US Coast and Geodetic Survey, alte ...s a geologic fault or the result of outbuilding of sediment from the land. Field and Bowie, who knew about Ewing through papers he presented at the American
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  • Chaos theory is the field of study in mathematics that studies the behavior of dynamical systems that
    1 KB (205 words) - 12:23, 18 October 2016
  • ...ging of the general theory of relativity and quantum mechanics (or quantum field theory) into quantum gravity, has become an area of research.
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  • ...y talented combination which proved effective in following a Mobil seismic field crew around Texas and Louisiana through 1963-66. Then it was back to CSM fo He then moved to the Mobil Field Research Laboratory and pioneered in 3-D field work before pursuing his love of teaching by becoming a professor at the Un
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  • ...inimal human intervention (one can even someday envision robots in lieu of field crews) and have the computer pick those reflections and produce an interpre :On the contrary - the gap between the lab and the field is narrowing. In 1960 we had a sort of town-and-gown atmosphere at the Amoc
    27 KB (4,323 words) - 17:53, 31 August 2020
  • ...e role in the digital revolution in our field. Milo's contributions to the field are significant. He was the mastermind in the creation and application of m
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  • ...pment for CRP, and more. There was even a stint in the medical electronics field; a certain photoelectric hypoxia-warning device which could have conceivabl ...uss the possible adaptation of some of our technology to the then emerging field of medical electronics.
    32 KB (5,141 words) - 11:11, 18 October 2016
  • ...competence as a researcher and for the many scientific discoveries in the field of exploration geophysics. :I brought men to a field that’s expanded and grown.
    26 KB (4,238 words) - 09:29, 9 April 2015
  • ...it interviews, and personal advising and in his classes and the geophysics field camp that he is so passionate about. He advises a large number of students
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  • '''Fred Aminzadeh''' has made significant contributions to the field of exploration geophysics and seismic signal processing through his numerou Fred’s accomplishments in the field of exploration geophysics and his contributions to our Society are truly ex
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  • ...h warrants exceptional recognition, to exploration geophysics or a related field or to the advancement of the profession of exploration geophysics through s
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  • * 2007 [http://www.crossref.org/iPage?doi=10.1190%2F1.2399458 ''Field tests of electroseismic hydrocarbon detection''], [[Arthur H. Thompson]], [ ...es of aeromagnetic anomalies over Cement oil field (Oklahoma), Simpson oil field (Alaska), and the Wyoming-Idaho-Utah thrust belt''], [[R. L. Reynolds]], [[
    14 KB (1,801 words) - 11:24, 30 September 2019
  • * 2001 [http://www.crossref.org/iPage?doi=10.1190%2F1.1444941 ''Potential-field inversion: Choosing the appropriate technique to solve a geologic problem,' ...1190%2F1.1444150 ''Electroseismic investigation of the shallow subsurface: Field measurements and numerical modeling,''] [[Oleg V. Mikhailov]], [[Matthijs W
    23 KB (2,964 words) - 01:55, 29 September 2019
  • ...gh the application and continuous improvement of 4D seismic at the Forties Field”] [[Grant Byerley]], [[Lyndsay Singer]], and [[Philip T. S. Rose]] ...iPage?doi=10.1190%2F1.3036964 ''Continuous seismic surveillance of Valhall Field,''] [[Jean-Paul van Gestel]], [[Jan H. Kommedal]], [[Olav Inge Barkved]], [
    5 KB (651 words) - 03:05, 10 February 2020
  • ...ismic inversion versus neural-network analysis: A case study in the Scarab field offshore Nile Delta, Egypt,"] [[Islam A. Mohamed]], [[Hamed Z. El-Mowafy] * 2007 [https://doi.org/10.1190/1.2542445 "Covenant Field: A major oil discovery in the Sevier Thrust belt of central Utah,"] [[Keith
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  • same, he did not lose contact with the problems of field techniques: this is became the great challenge, including everything that goes with it: field
    12 KB (1,798 words) - 14:02, 28 December 2016
  • ...as a Canadian geologist and geophysicist known for his seminal work in the field of plate tectonics, and was a recipient of SEG's [[Maurice Ewing Medal]].
    5 KB (835 words) - 12:11, 18 April 2017
  • ...ophysics and he has made significant contributions in many aspects of this field. He actually began his work in geophysics with a summer job on a Gulf seism
    11 KB (1,690 words) - 17:23, 11 May 2018
  • ...l Anstey in recognition of his outstanding and lasting achievements in the field of resource exploration and development in 2014 . ...crews in the Middle East and the West Indies for SSL. The realities of the field prevented any hint of "ivory tower" isolation in Nigel's later work.
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  • He joined Magnolia-Mobil laboratories, Dallas, as Supervisor of Geophysics Field Research (1949-1955). Dr. White and his family lived in Littleton, Colorado
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  • techniques occurred in the early 1950s, followed by successful field tests in Cyprus. ...me domain EM techniques occurred in the early '50s, followed by successful field tests in Cyprus. Nuclear magnetic resonance experiments were carried out in
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  • ...ocessing and filtering seismic exploration data, eventually developing the field of time series analysis and seismic wave propagation. He is the youngest ev
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  • ...927 - February 6, 2010)''' was a Turkish geophysicist and a pioneer in the field of seismic data processing. ...data analysis, but also has ceaselessly made prolific contributions in the field for more than three decades. He has developed algorithms which are in commo
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  • and gas geophysics. One of the major figures in the field of mining exploration conducted the first full-scale field tests of the new method on a known porphyry
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  • of the field of geopotential methods in geophysics, particularly in potential fields met ...he most recognized service and software company in the domain of potential field data acquisition, processing, interpretation, and integration with seismic.
    13 KB (2,010 words) - 14:47, 17 October 2016
  • | Field = seismic modeling, inversion, and processing for anisotropic media, fractu ...2015 in recognition of his contributions to exploration geophysics in the field of seismic anisotropy.
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  • career, contributing many advances to the field of exploration geophysics. for his major contributions as a scientist and educator in the field of exploration geophysics and for his
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  • to field supervisor in 1937, and during the next year made a supervisory ...as, Louisiana, California, and the Rocky Mountain area. He was promoted to Field Supervisor in 1937 and during the next several years made a number of trips
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  • in the field of exploration geophysics. As a field supervisor of a Gulf-Geophysical Research Corporation refraction
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  • of the solar wind and the earth’s magnetic field. In addition
    10 KB (1,476 words) - 11:35, 18 October 2016
  • ...aveform in the transmitter cable. (The temporal derivative of the magnetic field is ...his element and at the peak of his creativity. There is the construction, field-testing, data modeling/interpretation and,
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  • seismic technology into routine use in the field development case history “Field development with three-dimensional
    6 KB (913 words) - 14:25, 17 October 2016
  • Many of these students are now key figures in the exploration geophysics field. Additionally, Guus has been a dedicated and tireless volunteer in numerous hundred papers and many books in the field of geophysics
    5 KB (766 words) - 13:15, 17 October 2016
  • ...s well written papers and excellent books evoke more interest than in this field. Due to the universality of his work he finds, however, as many admirers in
    10 KB (1,467 words) - 17:31, 9 March 2015
  • '''Yu Zhang''' is mathematician and geophysicist known for his work in the field of seismic migration.
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  • * 1982 ''Ship Shoal Block 91 field, offshore Louisiana: An evolution of geologic models to conform with curren * ''Field application of mini-computers as used in economic mineral exploration,'' [[
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  • ...“Inferring marine sediment type using chirp sonar data: Atlantis field, Gulf of Mexico,”] by [[Jiannan Wang]] and [[Robert Stewart|Robert B. Ste ...and natural fracture identification from multicomponent seismic at Rulison Field, Colorado," [[Elizabeth LaBarre]] and [[Thomas Davis]]
    5 KB (601 words) - 01:23, 29 September 2019
  • ...df/10.1190/segam2013-1346.1 ''Automatic boundary detection using potential-field data,''] [[Leon Foks]]
    3 KB (382 words) - 01:00, 29 September 2019
  • * 1997 "A refraction seismic field study to determine the anisotropic parameters of shales,” [[Jennifer M. L
    3 KB (391 words) - 01:12, 29 September 2019
  • students helped define the field of borehole acoustic logging, ...1190%2F1.1444150 ''Electroseismic investigation of the shallow subsurface: Field measurements and numerical modeling,''] ''GEOPHYSICS'' 62(1):97.</ref>
    11 KB (1,604 words) - 23:44, 2 October 2020
  • ...wane, S.J (September 28, 1883 - February 15, 1956)''' was a pioneer in the field of earthquake seismology and the organizer of the Jesuit Seismological Serv ...of seismology throughout the world is evident from the literature in this field.<ref> ''Geophysics,'' Vol. XXII, No.1, January 1957</ref> His scholarly con
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  • ...reproducible recording back to seismic geophysics when he returned to this field in 1932, though he by no means limited his research and development to this ...cure for these interferences, turning his back on the lucrative commercial field to be exploited by others using conventional equipment in areas where refle
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  • ...ublished extensively on the most intricate of mathematical problems in the field of seismic wave propagation.
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  • memberships in other organizations in related field of geology and
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  • natural laws by other authors in the field.
    5 KB (687 words) - 20:08, 23 October 2020
  • ...[[Wikipedia:Columbia_University|Columbia University]] to earn a PhD in the field. He had not yet succumbed to the exploration bug though, and after finishin ...anisotropy, azimuthal anisotropy, azimuthal AVO, converted-waves, Life-of-Field-Seismics, and pore-pressure prediction, through numerous SEG publications a
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  • ExploiTech, a Digicon subsidiary offering multidisciplinary field studies in 1987. ExploiTech later became a Landmark Graphics subsidiary wit
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  • ...ly director of exploration. With hundreds of wells drilled in the Pinedale Field in the Green River Basin of Wyoming, Sally is proud of her success, which i
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  • ...at geophysics came highly recommended. Though Steve knew little about this field, he did know that Raytheon, the company that made his observatory equipment
    7 KB (1,129 words) - 17:18, 3 August 2016
  • activities in the Forties Field.
    8 KB (1,324 words) - 17:13, 8 April 2015
  • ...t Meeting. He developed the MicroMax, at one time the world's most popular field seismic processing system, and the ProMax processing system, which remains his BS (physics) and MS (geophysical sciences) while working on potential field methods and earthquake seismology.
    13 KB (2,020 words) - 10:48, 18 October 2016
  • ...e is a truly renaissance geophysicist, whose creative contributions to the field have ranged from the ingeniously esoterical to the eminently practical. In Exceptional performance in any field is a happy combination of many factors, such as plain old good luck, innate
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  • ...troleum in Bartlesville, Oklahoma, conducting research on improved seismic field techniques, seismic data analysis, and interpretation methods. His early pu
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  • In 1952, after Republic had declined to field another crew, Decker approached Forest Oil concerning the possibility of hi
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  • Further, a DVD, titled “Reflections in the Field,” was distributed at the 2005 Annual Meeting. Commissioned by SEG as a pa ...was personally tutored by L.L. Nettleton, a most important pioneer in the field).
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  • representative on the third GSI crew to take the field. Following a short
    2 KB (323 words) - 12:49, 19 October 2016
  • and was promoted to party chief in 1937. In 1943 he became a field
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  • interpretation, and supervision of field and processing operations. He was
    2 KB (302 words) - 13:29, 17 October 2016
  • ...ook two years from the idea stage until leases were acquired and a seismic field crew was assigned to acquire data. The idea was a combination of physical p ...ation and exploitation expenses. The idea that one is going to find such a field in a structural trap very often is not realistic when one considers the eno
    31 KB (5,164 words) - 13:55, 17 October 2016
  • He joined Humble in 1949 and spent his first five years in seismic field operations. Transferring
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  • ..., working out of Bakersfield, California. During this period, he conducted field research on seismic interference patterns in the San Joaquin Valley. He was then transferred to a field crew in Shell's midcontinent area where he explored for and found numerous
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  • ...xtensive experience as a party chief and supervisor on U.S. and Venezuelan field crews. His persistence and determination brought him early recognition and
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  • field, geophysical exploration, is an Honorary Life Membership in the Society.
    3 KB (395 words) - 15:29, 14 April 2017
  • ...J. C. Karcher, the inventor of the reflection method, took me to visit the field and office operations of a refraction crew working the Balcones fault zone. ...s. The crew mapped the Keokuk Falls field near Shawnee and the Carter-Knox field near Duncan, which was so large Bates had trouble convincing the client as
    7 KB (1,105 words) - 15:13, 17 October 2016
  • entered geophysics in charge of a torsion balance field
    4 KB (627 words) - 14:24, 17 October 2016
  • ...nued to work on a project he had started at Marland---the development of a field pendulum system. The Gulf pendulum became a highly useful gravity prospecting tool, far superior in results and in ease of field operation to the torsion balance which was in use at the time.
    14 KB (2,283 words) - 11:44, 18 October 2016
  • man in the field for the Geophysical Research
    2 KB (278 words) - 15:24, 17 October 2016
  • ...f Geophysical Case Histories); the Leduc field of Canada and the Provincia field of Colombia, South America.
    9 KB (1,522 words) - 15:04, 17 October 2016
  • ...ter a year of postgraduate work in acoustics at U.C.L.A., Curt entered the field of geophysics by associating himself with the newly formed Rieber Laborator
    5 KB (779 words) - 14:38, 17 October 2016
  • Field, Liberty County, Texas. This experience further
    2 KB (353 words) - 14:07, 17 October 2016
  • His own field of specialization as a student was in mathematics. He received his doctorat ...ment of Geological Sciences and it is widely recognized as a leader in its field. As would be expected, when the time came to select his successor he was ag
    7 KB (1,095 words) - 15:26, 17 October 2016
  • ...er another stint in Mexico, during which he located the second big Mexican field, Las Naranjas, he returned by 1914 to Oklahoma to run his own consulting of
    9 KB (1,320 words) - 15:40, 26 October 2020
  • The first geophysical field work to attempt mapping subsurface geological first season of field work with a deficit of $13,000. Mr. McCollum, who
    8 KB (1,183 words) - 11:43, 10 April 2014
  • ...ut thirty years Doctor Schriever was recognized as the top educator in the field of geophysics in the state of Oklahoma. ...and to Professor in 1927. He has continued in teaching and research in the field of physics since that time.
    5 KB (715 words) - 17:23, 30 March 2022
  • ...n evaluation of the concept sponsored by six oil companies in a west Texas field site.
    7 KB (1,122 words) - 11:44, 18 October 2016
  • the geophysical exploration field. seismic field, and in 1931 he acted as
    11 KB (1,731 words) - 15:21, 17 October 2016
  • ...0)''' was a geophysical researcher noted for many research advances in the field of seismic prospecting and imaging.
    4 KB (655 words) - 16:47, 6 December 2013
  • ...action methods and, guided by the work of Laric Hawkins, experimented with field methodology, data processing, and interpretation. It culminated in the 1980
    6 KB (911 words) - 15:30, 13 August 2016
  • Although Dr. Slichter's academic training was in the field of physics, his papers in this field, and he has participated in and kept abreast of
    7 KB (1,113 words) - 11:16, 18 October 2016
  • the Coyote Hills Field. During 1917 he was employed Humble had acquired holdings in and near the Ranger Field.
    6 KB (892 words) - 14:01, 17 October 2016
  • ...omputation Laboratory (RCL), a Cullen Image Processing Laboratory (IPL), a Field Research Laboratory (FRL), and a Well Log Research Laboratory (WLL). These
    4 KB (648 words) - 18:45, 6 March 2015
  • ...on a Geophysical Research Corporation (Amerada) seismic crew. He worked on field crews in Texas, Mississippi, Louisiana, and
    3 KB (519 words) - 14:42, 17 October 2016
  • ...e made a distinguished contribution to exploration geophysics or a related field, or to the advancement of the profession of exploration geophysics. During ...ld Brown, the past Secretary of Defense, he "...created an essentially new field of seismology, more vigorous and more intellectually exciting than the old
    5 KB (792 words) - 13:30, 17 October 2016
  • ...g this period that his standing as an international authority in potential field theory was firmly established both by his numerous publications and his wor ...y of vector magnetometry and on a multibody inversion method for potential field data.
    4 KB (658 words) - 13:42, 17 October 2016
  • Bob has always exhibited an inquisitive mind, particularly in the field of electronics, as applied to mineral and petroleum exploration. He has pub ...der than anyone else." Upon leaving college he went to work for Mobil on a field crew and later was transferred to their geophysical laboratory. During Worl
    4 KB (650 words) - 13:53, 17 October 2016
  • After supervising field operations in Mississippi and southern Louisiana, Ken became director of re
    5 KB (738 words) - 13:57, 17 October 2016
  • a required summer field program. In 1956 he to get practical field experience in geophysical exploration.
    9 KB (1,369 words) - 18:04, 27 October 2015
  • ...ed to pursue his passion for applied mathematics entirely in the expanding field of exploration seismology. It was the age of applying numerically efficient ...another. One may have built up an immense theoretical knowledge base in a field of interest, but may often find it difficult to transcribe that knowledge t
    6 KB (933 words) - 20:01, 9 August 2017
  • (the site of the largest oil field, Daqing). He was in charge of exploration and development of the Changqing Oil Field,
    11 KB (1,721 words) - 17:26, 20 March 2014
  • ...he 1982 Kauffman medalist. J. T. "Ted" Cherry was well out in front of the field when he did his pioneering work on the development and applications of shea ...Medal, and the rest of the research group, Ted conceived and designed the field experiments that established the feasibility and value for exploration of s
    5 KB (726 words) - 10:45, 18 October 2016
  • ...c field reversals, including the [[Jaramillo Event]], which was a magnetic field reversal event which helped establish this chronology. ...r in geophysics to a summer job with the U.S. Geological Survey in 1950 as field assistant to Clyde Wahrhaftig in the Alaska Range. In Alaska, Allan became
    5 KB (731 words) - 14:08, 17 October 2016
  • '''Stuart Crampin''' is a pioneer in the field of seismic anisotropy.
    5 KB (722 words) - 12:14, 17 March 2015
  • ...field experience, John often said that it was invaluable because, “What field work teaches you is never to ask a man to do something that you couldn’t ...ore. Years later, as a doodlebugger, those skills came in handy. As far as field work, what I learned from dad was probably more valuable than my college ed
    28 KB (4,594 words) - 14:09, 17 October 2016
  • '''Richard O. Hansen (d. 2008)''' was a research leader in potential-field branch of geophysics. Dr. Hansen was in the area of potential field methods in exploration.
    11 KB (1,639 words) - 14:29, 17 October 2016
  • ...eloped world-class expertise. He made many innovative contributions in the field of imaging shallow,
    4 KB (660 words) - 14:51, 14 August 2014
  • ...l to develop and maintain professional competence among its members in the field of exploration geophysics. This year, the Society in its recommendation to ...ut his professional career the needed traits for a respected winner in any field: professional competence, integrity and total dedication to the job on hand
    7 KB (1,019 words) - 10:54, 18 October 2016
  • ...to about twelve years ago. I was visiting one of our gravity crews, in the field, in an effort to better understand one of our gravity anomalies which was s
    5 KB (746 words) - 14:14, 17 October 2016
  • ...to about twelve years ago. I was visiting one of our gravity crews, in the field, in an effort to better understand one of our gravity anomalies, which was
    4 KB (672 words) - 14:50, 17 October 2016
  • ...past 20 years, virtually all reservoir engineers working on the Cold Lake Field have developed their own personal images of the reservoir. Until John's wor ...xtensively in both pilot and commercial operations at Imperial's Cold Lake Field is truly a monumental accomplishment leading to a Significant Innovation Aw
    5 KB (833 words) - 20:10, 19 February 2017
  • system for the field. ...why shooting seismic lines were not straight he was promptly sent into the field to shoot through a pig sty! Early geophysical training was rather difficul
    18 KB (2,951 words) - 13:42, 10 August 2016
  • ...irieux's research is oriented to seismic-wave propagation modeling through field experiments and theoretical modeling in heterogeneous media. Traveltime tom
    3 KB (418 words) - 10:45, 6 April 2015
  • ...r his encouragement and for affording his first opportunity to work in the field of geophysics. I am also certain that he realizes he would not have achieve
    8 KB (1,314 words) - 11:39, 23 February 2015
  • ...he West Siberian oil- and gas-bearing province, including the Samotlor oil field, which is the gem of the world's oil industry. ...h a shortage of well logging specialists initially forced Valery into that field instead of seismic exploration, he quickly mastered it and within four year
    5 KB (807 words) - 10:33, 6 May 2014
  • ...ur years with the Bureau of Ordnance, U.S. Navy; he spent a year as senior field instructor at Woods Hole Oceanographic Institution; he spent three years as
    4 KB (663 words) - 11:00, 18 October 2016
  • ...elling in many disciplines and pursuing multiple careers. He is at home in field data acquisition as well as in seismic data processing and interpretation.
    4 KB (644 words) - 14:23, 17 October 2016
  • ...on of synthetic seismograms (the Goupillaud medium again), to experimental field tests, and to early attempts at logging while drilling.
    5 KB (879 words) - 14:25, 17 October 2016
  • ...ford, he studied with the Stanford Exploration Project. He has worked as a field seismologist and research geophysicist for Western Geophysical, as a senior ...esearch says: "Dave was a member of the Geophysics Division at Chevron Oil Field Research in La Habra, California, from 1983 to 1988. His research in super-
    8 KB (1,341 words) - 14:15, 20 October 2017
  • term to a number of developments specifically in the field of Radon
    11 KB (1,735 words) - 21:05, 11 August 2016
  • ...innovative seismic party chiefs and had developed a historically important field method; within five years, he cofounded one of the leading geophysical cont ...he company's first instruments. For the past year he had been chief of its Field Party #2.
    20 KB (3,306 words) - 18:01, 6 December 2013
  • ...uter, observer, and field service engineer. The first-hand experience with field problems, gained during this phase of his career, gave him an understanding
    4 KB (688 words) - 17:53, 17 October 2017
  • ...nderson''''s contributions to the development and application of potential field methods have earned him worldwide recognition and make him a most fitting r ...nd gravity anomalies. Much of his work has been a pioneering effort in the field of airborne magnetic measurements. Early in his career, when the aeromagnet
    4 KB (693 words) - 14:31, 17 October 2016
  • ...ines' development of one of the first playback systems to read and process field-recorded binary gain coded tapes. Based on what would today be considered a Within his chosen field of electronics, Haines C. Hibbard has few peers. Those who work with him wo
    6 KB (884 words) - 17:18, 4 November 2016
  • ...theory, electromagnetic theory, signal processing, numerical modeling, and field and theoretical research in electromagnetic methods of geophysics. He was w ...officer in the U.S. Coast and Geodetic Survey. From 1964 to 1966, he was a field geophysicist with Kennecott Copper Corporation (KCC) and afterwards joined
    8 KB (1,150 words) - 11:00, 18 October 2016
  • == Memories from the field ==
    4 KB (586 words) - 10:59, 19 October 2016

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