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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

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
    1 KB (181 words) - 22:01, 22 February 2017
  • {{#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}}
    193 bytes (25 words) - 17:19, 30 October 2018

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