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• Dictionary:F
  {{#category_index:F|F}} ...es the storage of one coulomb. (See [[Special:MyLanguage/Dictionary:farad_(F)|''farad'']]).
  274 bytes (37 words) - 07:54, 18 April 2017
• Dictionary:Farad (F)
  {{#category_index:F|farad (F)}}
  292 bytes (39 words) - 08:15, 18 April 2017
• Dictionary:F-k analysis
  {{DISPLAYTITLE:''f-k'' analysis|noreplace}} {{#category_index:F|''f-k'' analysis}}
  191 bytes (22 words) - 13:59, 13 June 2017
• Dictionary:F-k domain
  ...-k''</b> <b>plots</b> (see Figure [[Special:MyLanguage/Dictionary:Fig_F-11|F-11]]) in which energy density within a given time interval is contoured on FIG. F-11.
  1 KB (206 words) - 11:29, 11 June 2019
• Dictionary:F-k filtering
  {{DISPLAYTITLE:''f-k'' filtering|noreplace}} {{#category_index:F|''f-k'' filtering}}
  403 bytes (47 words) - 13:55, 13 June 2017
• Dictionary:F-k migration
  {{DISPLAYTITLE:''f-k'' migration|noreplace}} {{#category_index:F|''f-k'' migration}}
  918 bytes (96 words) - 13:49, 13 June 2017
• Dictionary:F-k plot
  See [[Special:MyLanguage/Dictionary:f-k_domain|''f-k'' ''domain'']].
  116 bytes (13 words) - 15:54, 28 November 2020
• Dictionary:F-layer
  {{#category_index:F|F-layer}} ...usually 175 to 250 km high and is found only during daylight. The higher ''F''₂ layer at 250 to 400 km is present both night and day and is t
  712 bytes (114 words) - 08:38, 4 July 2019
• Dictionary:Probability functions, F(x)
  {{#category_index:P|probability functions, ''F''(''x'')}}
  193 bytes (22 words) - 11:00, 16 March 2020
• Dictionary:Fig F-1
  FIG. F-1.
  651 bytes (104 words) - 16:36, 20 December 2011
• Dictionary:Fig F-10
  FIG. F-10.
  590 bytes (97 words) - 16:36, 20 December 2011
• Dictionary:Fig F-11
  FIG. F-11. .../''k''=&#x03C9;/&#x03BA;). (<b>b</b>) Data beyond the Nyquist wavenumber ''f''_''N'' (determined by discrete spatial sampling) <b>wraps around
  649 bytes (110 words) - 12:00, 12 April 2012
• Dictionary:Fig F-12
  FIG. F-12.
  273 bytes (42 words) - 16:36, 20 December 2011
• Dictionary:Fig F-13
  FIG. F-13.
  634 bytes (109 words) - 16:36, 20 December 2011
• Dictionary:Fig F-14
  FIG. F-14. ...'+''M''</sub>), where ''Z''_''i''=&#x03A3;''G''_''k''''F''_{''i''&#x2013;''k''}.
  499 bytes (81 words) - 16:36, 20 December 2011
• Dictionary:Fig F-15
  ...and negative flowers at different places (see Figure [[Dictionary:Fig_F-4|F-4]]). (From Lowell, 1985, 63.)
  522 bytes (78 words) - 16:36, 20 December 2011
• Dictionary:Fig F-16
  FIG. F-16.
  754 bytes (124 words) - 16:36, 20 December 2011
• Dictionary:Fig F-17
  FIG. F-17.
  964 bytes (168 words) - 16:36, 20 December 2011
• Dictionary:Fig F-18
  ...ts for a waveform. The frequency-domain representation or spectrum ''G''(''f'') of a discrete time function ''g''_''t'' (waveform, seismic rec ...ath> constitute a Fourier-transform pair; see Figure [[Dictionary:Fig_F-19|F-19]].
  1 KB (256 words) - 08:07, 9 April 2016
• Dictionary:Fig F-19
  FIG. F-19. ...re neither odd nor even involve variations of phase with frequency. Note ''f''=1/''t''.
  496 bytes (82 words) - 16:37, 20 December 2011
• Dictionary:Fig F-2
  FIG. F-2.
  64 bytes (10 words) - 16:37, 20 December 2011
• Dictionary:Fig F-20
  FIG. F-20. ...ta. Note: ''g''(''t'')&#x2194;''G''(''f'') and ''h''(''t'')&#x2194;''H''(''f'').
  270 bytes (42 words) - 16:37, 20 December 2011
• Dictionary:Fig F-21
  FIG. F-21.
  110 bytes (14 words) - 16:37, 20 December 2011
• Dictionary:Fig F-22
  FIG. F-22.
  74 bytes (11 words) - 16:37, 20 December 2011
• Dictionary:Fig F-23
  FIG. F-23.
  214 bytes (37 words) - 16:37, 20 December 2011
• Dictionary:Fig F-24
  FIG. F-24.
  174 bytes (29 words) - 16:37, 20 December 2011
• Dictionary:Fig F-25
  FIG. F-25.
  672 bytes (111 words) - 16:37, 20 December 2011
• Dictionary:Fig F-26
  FIG. F-26.
  354 bytes (60 words) - 16:37, 20 December 2011
• Dictionary:Fig F-3
  FIG. F-3.
  57 bytes (10 words) - 16:37, 20 December 2011
• Dictionary:Fig F-4
  ...divergence may produce flower structures (see Figure [[Dictionary:Fig_F-12|F-12]]). (From Sheriff and Geldart, 1995, 369&#x2013;370.) (<b>g</b>) Transit
  928 bytes (141 words) - 16:38, 3 October 2016
• Dictionary:Fig F-5
  FIG. F-5. A <b>fault slice</b> is made by slicing a 3D volume parallel to a picked
  392 bytes (63 words) - 16:37, 20 December 2011
• Dictionary:Fig F-6
  FIG. F-6. <b>Feathering</b> of a marine streamer. See also Figure [[Dictionary:Fig
  120 bytes (20 words) - 16:37, 20 December 2011
• Dictionary:Fig F-7
  FIG. F-7.
  447 bytes (73 words) - 16:37, 20 December 2011
• Dictionary:Fig F-8
  FIG. F-8.
  121 bytes (17 words) - 13:31, 4 March 2018
• Dictionary:Fig F-9
  FIG. F-9.
  89 bytes (14 words) - 16:37, 20 December 2011
• Dictionary:F:Index
  {{#category_index:Dictionary|F}} {{#category_index_get:list_values|F}}
  113 bytes (15 words) - 16:39, 20 December 2011
• Jon F. Claerbout
  27 bytes (3 words) - 14:04, 17 October 2016
• F. K. Levin
  28 bytes (3 words) - 13:40, 20 November 2013
• F. Goldstone
  29 bytes (3 words) - 14:24, 17 October 2016
• Ben F. Giles
  23 bytes (3 words) - 14:23, 17 October 2016
• Roy F. Bennett
  25 bytes (3 words) - 13:32, 17 October 2016
• F. A. Van Melle
  | image = [[File:F._A._Van_Melle_headshot.png|180px]] '' by F. A. Van Melle''
  10 KB (1,702 words) - 12:23, 1 August 2014
• John F. Weinzierl
  28 bytes (3 words) - 11:32, 18 October 2016
• B. F. Giles
  #REDIRECT [[Ben F. Giles]]
  26 bytes (4 words) - 18:21, 20 January 2014
• Otto F. Ritzmann
  #REDIRECT [[O. F. Ritzmann]]
  28 bytes (4 words) - 13:25, 22 January 2014
• Gordon F. West
  25 bytes (3 words) - 11:30, 18 October 2016
• B. F. Rummerfield
  #REDIRECT [[Benjamin F. Rummerfield]]
  37 bytes (4 words) - 17:31, 7 February 2014
• Ben F. Rummerfield
  #REDIRECT [[Benjamin F. Rummerfield]]
  37 bytes (4 words) - 12:43, 18 February 2014
• G. F. West
  #REDIRECT [[Gordon F. West]]
  28 bytes (4 words) - 12:41, 25 February 2014
• J. F. Tessis
  '''J. F. Tessis (1933-1997)'''
  4 KB (617 words) - 11:26, 7 April 2015
• Searcy, F.
  26 bytes (3 words) - 10:54, 26 March 2014
• Gerald H. F. Gardner
  28 bytes (3 words) - 14:21, 17 October 2016
• Russell F. Ryan
  26 bytes (3 words) - 15:26, 17 October 2016
• Dictionary:F/zh-hans
  {{#category_index:F|F}}
  185 bytes (5 words) - 08:27, 4 July 2019
• Dictionary:F/en
  {{#category_index:F|F}} ...es the storage of one coulomb. (See [[Special:MyLanguage/Dictionary:farad_(F)|''farad'']]).
  212 bytes (31 words) - 07:54, 18 April 2017
• Dictionary:Farad (F)/en
  {{#category_index:F|farad (F)}}
  233 bytes (33 words) - 08:15, 18 April 2017
• Dictionary:F/es
  {{#category_index:F|F}}
  216 bytes (31 words) - 10:46, 19 April 2017
• Dictionary:F-k analysis/zh
  {{DISPLAYTITLE:''f-k'' analysis|noreplace}} {{#category_index:F|''f-k'' analysis}}
  156 bytes (18 words) - 12:53, 15 September 2017
• Dictionary:F-k filtering/es
  {{DISPLAYTITLE:''f-k'' filtering|noreplace}} {{#category_index:F|''f-k'' filtering}}
  1 KB (196 words) - 16:33, 29 November 2020
• Dictionary:F-k migration/en
  {{DISPLAYTITLE:''f-k'' migration|noreplace}} {{#category_index:F|''f-k'' migration}}
  847 bytes (88 words) - 13:50, 13 June 2017
• Dictionary:F-k plot/en
  See [[Special:MyLanguage/Dictionary:f-k_domain|''f-k'' ''domain'']].
  81 bytes (9 words) - 15:56, 28 November 2020
• Dictionary:F-k migration/es
  {{DISPLAYTITLE:''f-k'' migration|noreplace}} {{#category_index:F|Migración ''f-k''}}
  859 bytes (94 words) - 16:33, 29 November 2020
• Dictionary:F-k plot/es
  Ver [[Special:MyLanguage/Dictionary:f-k_domain|''dominio f-k'']].
  78 bytes (9 words) - 15:55, 28 November 2020
• Dictionary:F-k analysis/en
  {{DISPLAYTITLE:''f-k'' analysis|noreplace}} {{#category_index:F|''f-k'' analysis}}
  156 bytes (18 words) - 13:59, 13 June 2017
• Dictionary:F-k analysis/es
  {{DISPLAYTITLE:''f-k'' analysis|noreplace}} Ver [[Special:MyLanguage/Dictionary:f-k_domain|dominio f-k]].
  118 bytes (13 words) - 14:00, 13 June 2017
• Dictionary:F-k domain/en
  {{DISPLAYTITLE:Dictionary:''f-k'' domain}} {{#category_index:F|''f-k'' domain}}
  1 KB (207 words) - 08:49, 23 February 2017
• Dictionary:F-k domain/es
  {{DISPLAYTITLE:Dominio F-k|noerror}} {{#category_index:D|dominio F-k}}
  1 KB (271 words) - 16:34, 29 November 2020
• Dictionary:F-k filtering/en
  {{DISPLAYTITLE:''f-k'' filtering|noreplace}} {{#category_index:F|''f-k'' filtering}}
  344 bytes (41 words) - 09:00, 10 May 2019
• F. B. Coker
  25 bytes (3 words) - 14:05, 17 October 2016
• David F. Halliday
  28 bytes (3 words) - 14:28, 17 October 2016
• F. M. Kannenstine
  32 bytes (3 words) - 14:41, 17 October 2016
• George F. Kokkoros
  29 bytes (3 words) - 14:44, 17 October 2016
• F. Morgan
  26 bytes (3 words) - 14:58, 17 October 2016
• Billy F. Mitcham Sr.
  27 bytes (3 words) - 14:58, 17 October 2016
• F. J. McDonal
  27 bytes (3 words) - 15:01, 17 October 2016
• O. F. Ritzmann
  27 bytes (3 words) - 15:21, 17 October 2016
• Benjamin F. Rummerfield
  34 bytes (3 words) - 15:25, 17 October 2016
• C. F. Shieh
  25 bytes (3 words) - 11:38, 18 October 2016
• Valéria C. F. Barbosa
  39 bytes (5 words) - 13:21, 17 October 2016
• Dictionary:Fig F-8/es
  FIG. F-8.
  76 bytes (12 words) - 13:39, 4 March 2018
• Dictionary:Fig F-8/en
  FIG. F-8.
  74 bytes (11 words) - 10:19, 28 March 2018
• Dictionary:F-layer/es
  {{#category_index:F|F-layer}} ...a de 175 a 250 km y se encuentra solo durante el día. La capa más alta ''F''₂
  1 KB (244 words) - 12:54, 22 June 2021
• Dictionary:Farad (F)/es
  ...nto de un culombio. Llamado así en honor a Michael Faraday (1791–1867), físico inglés.
  264 bytes (39 words) - 13:05, 22 June 2021
• Dictionary:Probability functions, F(x)/es
  {{#category_index:P|probability functions, ''F''(''x'')}} FIG. P-13. Funciones de probabilidad, F(x).
  161 bytes (22 words) - 08:47, 31 May 2020
• Dictionary:Probability functions, F(x)/en
  {{#category_index:P|probability functions, ''F''(''x'')}}
  131 bytes (16 words) - 11:00, 16 March 2020
• Dictionary:F-k filtering/zh-hans
  {{DISPLAYTITLE:''f-k'' filtering|noreplace}}
  162 bytes (6 words) - 09:15, 10 May 2019
• Dictionary:F-k analysis/zh-hans
  {{DISPLAYTITLE:''f-k'' analysis|noreplace}}
  76 bytes (6 words) - 11:24, 11 June 2019
• Dictionary:F-k domain/zh-hans
  ...了交叉阴影。通过原点的径向线表示恒定的视速度 Va (Va=f/k=ω/κ). (b) 超过尼奎斯特波数fN(由离散空间采样决定)外的
  804 bytes (23 words) - 11:56, 11 June 2019
• Dictionary:F-k migration/zh-hans
  {{DISPLAYTITLE:''f-k'' migration|noreplace}} {{#category_index:F|''f-k'' migration}}
  868 bytes (71 words) - 17:22, 17 June 2019
• Dictionary:F-k plot/zh-hans
  38 bytes (2 words) - 15:55, 28 November 2020
• Dictionary:F-layer/en
  {{#category_index:F|F-layer}} ...usually 175 to 250 km high and is found only during daylight. The higher ''F''₂ layer at 250 to 400 km is present both night and day and is t
  650 bytes (108 words) - 08:39, 4 July 2019
• Dictionary:F-layer/zh-hans
  {{#category_index:F|F-layer}}
  581 bytes (30 words) - 13:11, 30 July 2019
• Dictionary:F-layer/zh
  {{#category_index:F|F-layer}} ...usually 175 to 250 km high and is found only during daylight. The higher ''F''₂ layer at 250 to 400 km is present both night and day and is t
  650 bytes (108 words) - 13:33, 22 July 2019
• Dictionary:F-layer/zh-cn
  {{#category_index:F|F-layer}}
  575 bytes (30 words) - 13:11, 30 July 2019
• F-k filtering
  ...and displacement domain, is converted into the frequency and wave number (F-k) domain as seen in [[:File:Fk domain.png|figure 1]] below. The [[Seismic ...nal and to be removed from the record. To accomplish this you can use the F-k, or pie slice, filter in which the range of apparent velocities can be se
  6 KB (961 words) - 16:49, 4 December 2019
• Blaster Model F
  |Item=Blaster Model "F"
  406 bytes (56 words) - 11:00, 1 November 2019
• Geophone Type G3 F (additional)
  |Item=Geophone Type G3 F
  426 bytes (61 words) - 11:19, 1 November 2019
• Geophone Type G3 F
  |Item=Geophone Type G3 F
  418 bytes (61 words) - 11:33, 1 November 2019
• Connector Scorpio SC 28M/F Y
  |Item=Connector Scorpio SC 28M/F "Y"
  372 bytes (55 words) - 11:57, 1 November 2019
• Dictionary:Farad (F)/zh-hans
  166 bytes (4 words) - 09:15, 10 November 2019
• Appendix F: Exercises
  ...''b''. Determine this frequency for the following beds. [Note: <math>V = \;f\lambda </math>.]
  8 KB (992 words) - 13:49, 3 May 2021
• Appendix F: Exercises/en
  ...''b''. Determine this frequency for the following beds. [Note: <math>V = \;f\lambda </math>.]
  7 KB (914 words) - 13:49, 3 May 2021
• Appendix F: Exercises/es
  ...''b''. Determine this frequency for the following beds. [Note: <math>V = \;f\lambda </math>.]
  7 KB (922 words) - 16:43, 7 May 2021

Page text matches

• Dictionary:Absorption
  ...E</math> = energy lost in one cycle, <math>\lambda</math> = wavelength, ''f'' = frequency, ''x'' = distance, ''t'' = time, <math>\frac{A}{A_{0}} = \fra
  2 KB (240 words) - 11:39, 17 October 2016
• Dictionary:Ac-bias recording
  ...</b>) <b>Pulse-width modulation</b> (PWM); the width of pulses varies. (<b>f</b>) <b>Pulse-spacing modulation</b>; the timing of pulses varies. See also
  980 bytes (152 words) - 11:31, 8 December 2017
• Dictionary:Affine
  (&#x2202;&#x2019; f&#x012B;n) Denoting the relation between local grid coordinates and absolute
  224 bytes (28 words) - 15:04, 23 January 2018
• Dictionary:Afmag method
  (af mag&#x2019;) <b>A</b>udio-<b>F</b>requency <b>MAG</b>netic technique, the use of natural electromagnetic n
  750 bytes (109 words) - 12:35, 17 October 2016
• Dictionary:Airwave
  ...velocity of sound: ''V''&#x2248;1051+1.1&#x0020;''F''&#x0020;ft/s, where ''F''=Fahrenheit temperature, or ''V''&#x2248;331.5+0.607&#x0020;''C''&#x0020;m
  480 bytes (69 words) - 12:22, 17 October 2016
• Dictionary:Alias
  .../''k''=&#x03C9;/&#x03BA;). (<b>b</b>) Data beyond the Nyquist wavenumber ''f''_''N'' (determined by discrete spatial sampling) <b>wraps around ...f''_''N'' + &Delta;''f'' and ''f''_''N'' – &Delta;''f'', are ''aliases'' of each other. [[File:Sega8.jpg|left|thumb|300px|FIG. A-
  4 KB (611 words) - 17:32, 26 February 2018
• Dictionary:Alias filter
  ...h attenuation above the Nyquist frequency; see Figure [[Dictionary:Fig_F-9|F-9]]. Also called <b>antialias filter</b>.
  548 bytes (81 words) - 12:58, 17 October 2016
• Dictionary:Alphameric
  (al f&#x2202; m&#x2202;r&#x2019; ik) [[Special:MyLanguage/Dictionary:alphanumeric
  228 bytes (27 words) - 18:02, 26 February 2018
• Dictionary:Alphanumeric
  (al f&#x2202; nu&#x2019; m&#x2202;r, ik) Pertaining to a character set containing
  244 bytes (32 words) - 17:57, 26 February 2018
• Dictionary:Amorphous
  (&#x2202;&#x2019; mor f&#x2202;s) Lacking crystal structure.
  179 bytes (21 words) - 14:20, 14 March 2018
• Dictionary:Amplitude variation with angle/offset (AVA/AVO)
  ...nds: Geophysics, 54, 680–688.</ref>, and Hilterman (2001)<ref>Hilterman, F. J., 2001, Seismic amplitude interpretation. SEG-EAEG Distinguished Instruc
  3 KB (408 words) - 16:24, 8 September 2020
• Dictionary:Analytic signal
  '''1'''. For a signal such as ''f''(''t''), see [[Special:MyLanguage/Dictionary:Hilbert_transform|''Hilbert t '''2'''. The analytic signal <b>A</b> of a potential field <b>F</b> is
  1 KB (201 words) - 14:39, 9 April 2018
• Dictionary:AN/FO
  A mixture of <b>A</b>mmonium <b>N</b>itrate and <b>F</b>uel <b>O</b>il used as an explosive.
  169 bytes (34 words) - 13:31, 17 October 2016
• Dictionary:Angular frequency
  ...f''=frequency in Hz, the angular frequency &#x03C9; is &#x03C9;=2&#x03C0;''f''.
  253 bytes (35 words) - 22:21, 3 January 2018
• Dictionary:Antithetic fault
  ...n without the rotation. See Figure [[Special:MyLanguage/Dictionary:Fig_F-5|F-5]].
  506 bytes (77 words) - 09:31, 4 March 2018
• Dictionary:Apparent resistivity
  <center><math>\rho_\mathrm{a} = \frac{\rho_\mathrm{HS} F(V)}{F(V_\mathrm{HS})} </math></center> where &#x03C1;_''HS''=resistivity of a homogeneous half-space, ''F'' is a function of ''V''=observed voltage, and ''V''_''HS''=volta
  3 KB (368 words) - 14:38, 11 March 2018
• Dictionary:Array (electrical)
  ...ode or halfway between the two poles. Also called a <b>half-Wenner array. (f) Radial array</b>; see [[Special:MyLanguage/Dictionary:azimuthal_survey|''a
  4 KB (586 words) - 18:58, 14 December 2017
• Dictionary:Array (seismic)
  ...; (<b>c</b>) cross; (<b>d</b>) 3&#x00D7;3 diamond; (<b>e</b>) X-array; (<b>f</b>) rectangular array; (<b>g</b>) crow&#x2019;s-foot array; (<b>h</b>) odd
  3 KB (430 words) - 18:19, 6 June 2020
• Dictionary:Attenuation
  ...E</math> = energy lost in one cycle, <math>\lambda</math> = wavelength, ''f'' = frequency, ''x'' = distance, ''t'' = time, <math>\frac{A}{A_{0}} = \fra
  2 KB (217 words) - 13:15, 6 February 2018
• Dictionary:Attribute, seismic
  ...|issue=10|year=1995|pages=1053–1058|doi=10.1190/1.1437077}}</ref>. (<b>e,f</b>) Horizon slices illuminated in different directions; the direction of i
  7 KB (961 words) - 15:01, 6 February 2018
• Dictionary:Autocorrelation
  ...aystyle \int^{t_2}_{t_1} f(t) f(t+\tau) dt }{\displaystyle\int^{t_2}_{t_1} f^2(t)dt} </math>,</center> where ''f''(''t'') represents a waveform (or seismic trace) and <math> \tau </math> i
  2 KB (257 words) - 02:06, 25 December 2017
• Dictionary:Autocovariance
  ...02;ns) Similar to an autocorrelation except that the mean value <math>\bar{f} </math> is subtracted before the integration, and normalization is not don ...ter><math>\int^{t_2}_{t_1} \left[ f(t) - \bar{f}\right]\left[(t-\tau)-\bar{f}\right] dt</math> .</center>
  582 bytes (92 words) - 02:42, 25 December 2017
• Dictionary:Axial surface
  ...alled <b>ab plane</b>. See Figure [[Special:MyLanguage/Dictionary:Fig_F-17|F-17]]. [[File:Segf17.jpg|thumb|center}FIG. F-17. <b>Folding</b>. (<b>a</b>) The <b>plunge</b> of an anticline is the ang
  1 KB (227 words) - 20:55, 3 January 2018
• Dictionary:Bandwidth
  <center><math>\int_{0}^{\infty}\frac{p(f)df}{p_{max}} ;</math></center> where <math>p\left ( f \right )</math> is the power at the frequency <math>f</math> and <math>p_{max}</math> is the maximum power. It is the width of a
  939 bytes (153 words) - 23:09, 30 January 2017
• Dictionary:B-axis
  ...nt foliation surfaces. See Figure [[Special:MyLanguage/Dictionary:Fig_F-17|F-17]].
  408 bytes (55 words) - 10:40, 10 March 2020
• Dictionary:Beach balls
  ...volved in earthquakes. See Figure [[Special:MyLanguage/Dictionary:Fig_F-10|F-10]].
  429 bytes (51 words) - 13:34, 16 November 2017
• Dictionary:Beaufort number
  (b&#x014D;&#x2019; f&#x2202;rt) A numerical scale indicating wind speed. See Figure [[Special:My
  411 bytes (52 words) - 09:48, 15 December 2017
• Dictionary:Bicubic spline
  <center><math> F(x,y)= \sum^{3}_{i=0}\sum^{3}_{j=0} c_{ij} x^i y^j</math> </center>
  432 bytes (68 words) - 10:22, 24 March 2017
• Dictionary:Bin
  ...hould be smaller than ''V''/(4''f''sin&#x03B8;) where ''V'' is velocity, ''f'' is dominant frequency, and &#x03B8; is the apparent dip.
  601 bytes (96 words) - 11:06, 24 March 2017
• Dictionary:Birch’s law
  ..., b'' are constants. Named for [[Special:MyLanguage/Albert F. Birch|Albert F. Birch]] (1903-1992), American geophysicist.
  669 bytes (100 words) - 10:46, 10 March 2020
• Dictionary:Butterfly filter
  An ''f-k'' (velocity) filter that rejects a prescribed band of apparent velocities
  362 bytes (48 words) - 22:11, 14 May 2017
• Dictionary:Cage
  ...cage. See ''Flexotir'' and Figure [[Special:MyLanguage/Dictionary:Fig_F-13|F-13]].
  438 bytes (61 words) - 15:38, 29 January 2017
• Dictionary:Capacitive reactance
  <center><math>X_c=\frac{1}{2\pi f C}</math>,</center> where ''f'' is frequency in hertz, ''C'' is capacitance in farads and ''X''<sub>C</su
  992 bytes (117 words) - 21:14, 27 February 2017
• Dictionary:Cauchy-type integral
  ...ontour ''C'' can be expressed in terms of a line integral along ''C'' if ''f''(''z'') is a continuous analytic function: <center><math>f(a)=\frac {1}{2\pi i} \oint \frac {f(z)}{z-z_0}dz </math>.</center>
  587 bytes (85 words) - 18:46, 15 April 2017
• Dictionary:Causality
  <center> <math> F(\omega) = \int_0^\infty f(t) e^{i \omega t } \; dt </math> </center> <center> <math> f(t) = \int_{-\infty}^\infty F(\omega) e^{-i \omega t } \; dt. </math> </center>
  8 KB (1,347 words) - 16:34, 26 September 2019
• Dictionary:Celsius
  ...rade</b>. If ''T''_''C'', ''T''_''K'', and ''T''_''F'' are Celsius, Kelvin, and Fahrenheit temperatures, respectively,
  578 bytes (87 words) - 18:49, 15 April 2017
• Dictionary:CFP
  <b>C</b>ommon <b>F</b>ocusing <b>P</b>oint, involved in imaging. See common-image point.
  188 bytes (29 words) - 10:26, 11 July 2017
• Dictionary:Chi-square
  ...ance. The chi-square test is a statistical test of data distribution. If ''f''_''i'' are observed, frequencies of occurrence and ''e''<sub>''i
  869 bytes (139 words) - 10:37, 28 November 2017
• Dictionary:Circular frequency
  Angular frequency &#x03C9;=2&#x03C0;''f'', where ''f''=ordinary frequency.
  202 bytes (24 words) - 12:56, 28 November 2017
• Dictionary:Comb
  <center><math>\text{comb}(t)\leftrightarrow\text{comb}(f) </math>,</center> ...uage/Dictionary:Fig_C-8|C-8]] and [[Special:MyLanguage/Dictionary:Fig_F-19|F-19]].
  1 KB (188 words) - 14:27, 11 April 2017
• Dictionary:Complex number
  ...the field of complex numbers to the field of complex numbers, then <math> f(z) </math> must, itself be the sum of a purely real valued function <math> <center> <math> f(z) = u(x,y) + i v(x,y). </math> </center>
  7 KB (1,124 words) - 00:09, 21 March 2020
• Dictionary:Complex-trace analysis
  ...lex number representation <math> F(t)</math> of a real time-series <math> f(t)</math>: <center><math>F(t)= f(t)+ i f_{\perp}(t)=A(t)e^{i \phi(t)} </math>,</center>
  6 KB (1,026 words) - 09:43, 10 August 2017
• Dictionary:Computer
  ...mputer program is shown in Figure [[Special:MyLanguage/Dictionary:Fig_F-14|F-14]]. <b>3</b>. An <b>analog computer</b> uses a physical analogy of positi
  749 bytes (107 words) - 17:07, 4 June 2017
• Dictionary:Conjugate function
  Any 2D function <math> F(z) </math> may be written in terms of orthogonal conjugate functions <math> <center><math>F(z)=F(x+jy)=\phi(x,y)+j\psi(x,y) </math>.</center>
  354 bytes (58 words) - 18:00, 23 July 2017
• Dictionary:Continuation
  ...', ''F''(''x'',''y'',''z''), can be found from the field on the surface, ''F''(''x'' ', ''y'' ',0). Where the surfaces are horizontal and no sources int <center><math>F(x,y,z)=\frac{\left|z\right|}{2\pi}\iint \frac{F(x',y',0}{R^3}dx' dy' </math>.</center>
  920 bytes (132 words) - 10:11, 20 August 2017
• Dictionary:Convolution
  '''1'''. A mathematical operation between two functions, ''g''(''t'') and ''f''(''t''), often symbolized by an asterisk: <center><math>g(t)\ast f(t)=\int_\tau g(\tau)f(t-\tau)d\tau </math>.</center>
  3 KB (461 words) - 10:57, 4 December 2017
• Dictionary:Convolutional model
  The concept that a seismic trace ''f''(''t'') can be represented by the convolution of an embedded (equivalent) <center><math>f(t)=w(t)\ast r(t)+n(t) </math></center>
  863 bytes (134 words) - 12:52, 4 December 2017
• Dictionary:Convolution theorem
  ...ge/Dictionary:Fig_F-20|F-20]] and [[Special:MyLanguage/Dictionary:Fig_F-22|F-22]]. The process of convolution of two functions <math> f(t)</math> and <math> g(t) </math> is defined in one dimension, as
  6 KB (1,039 words) - 09:27, 20 June 2017
• Dictionary:Coulomb’s law
  A force ''F'' exists between electrical charges ''Q''₁ and ''Q''₂ <center><math>F=\frac{kQ_1 Q_2 }{r^2} = \frac{Q_1 Q_2}{4 \pi \varepsilon r^2 } </math></cen
  532 bytes (82 words) - 10:22, 20 April 2021
• Dictionary:Crosscorrelation theorem
  ...r><math> \phi_{12}(\tau) \leftrightarrow \overline{G_1(f)}G_2(f)=\Phi_{12}(f)</math>, </center> ...s-energy spectrum</b>. See Figure [[Special:MyLanguage/Dictionary:Fig_F-22|F-22]] and Sheriff and Geldart (1995, 285, 538, and 541-542) <ref>Sheriff, R.
  1 KB (153 words) - 09:17, 2 October 2017
• Dictionary:Datuming
  ...um; <b>flattening</b> (see Figure [[Special:MyLanguage/Dictionary:Fig_F-12|F-12]]) thereby assuming that everything was horizontal at the time of the pa
  593 bytes (85 words) - 07:25, 14 February 2017
• Dictionary:Deconvolution
  ...o make all frequency components within a band-pass equal in amplitude; <b>(f) shaping</b> the amplitude-frequency and/or phase response to match that of
  2 KB (257 words) - 09:50, 23 March 2017
• Dictionary:Dextral
  ...te is <b>sinistral</b>. See Figure [[Special:MyLanguage/Dictionary:Fig_F-4|F-4]].
  332 bytes (47 words) - 19:29, 7 March 2017
• Dictionary:DFN
  <b>D</b>elayed <b>F</b>ission <b>N</b>eutron log.
  149 bytes (24 words) - 18:25, 3 April 2017
• Dictionary:DFS
  <b>D</b>igital (seismic) <b>F</b>ield <b>S</b>ystem. Texas Instruments tradename.
  181 bytes (27 words) - 18:24, 3 April 2017
• Dictionary:Dirac function
  <center> <math> \int_{-\infty}^{\infty} f(t) \delta(t) \; dt = f(0). </math> </center> ...ath> \lim_{n\rightarrow \infty} \int_{-\infty}^{\infty} f(t) S_n(t)\; dt = f(0). </math> </center>
  6 KB (878 words) - 15:28, 27 November 2017
• Dictionary:Directivity graph
  ...etrain so that use of steady-state patterns can be misleading. A plot in ''f-k'' space is a form of directivity graph showing also the frequency-depende
  1 KB (195 words) - 15:32, 27 November 2017
• Dictionary:Dirichlet conditions
  ...ssary and sufficient conditions for a Fourier series: In any region: (a) ''f''(''x'') is continuous except for a finite number of finite discontinuities
  444 bytes (62 words) - 21:00, 24 January 2017
• Dictionary:Dispersion
  ...tinct from phase velocity ''V''. Where <math>\lambda </math>=wavelength, ''f''=frequency, and ''V''=phase velocity, <center><math>V=f\lambda=\frac{f}{1/\lambda} </math>.</center>
  2 KB (237 words) - 08:32, 20 June 2017
• Dictionary:Distortion
  .... The percent harmonic distortion is a measure of fidelity; if ''E''_''f'' is the rms voltage of the fundamental and ''E''_''n'' is
  2 KB (254 words) - 21:04, 3 April 2017
• Dictionary:Distribution function
  <center><math>F(x)=\int P[x]dx </math>.</center>
  452 bytes (67 words) - 21:06, 3 April 2017
• Dictionary:DMO (dip moveout) processing
  ...aces having the same source; (<b>e</b>) <b>common-receiver gather</b>; (<b>f</b>) <b>common-offset gather</b>. (<b>g</b>) If there are horizontal veloci ...urnal |last=Bolondi |first=G |last2=Loinger |first2=E |last3=Rocca |first3=F |date=1982 |title=Offset continuation of seismic sections|journal=Geophysic
  5 KB (744 words) - 20:46, 4 May 2017
• Dictionary:DOD
  U.S. <b>D</b>epartment <b>O</b>f <b>D</b>efense.
  148 bytes (25 words) - 20:46, 4 May 2017
• Dictionary:DOE
  U.S. <b>D</b>epartment <b>O</b>f <b>E</b>nergy.
  147 bytes (25 words) - 15:37, 21 November 2018
• Dictionary:Domain
  ...y is the independent variable; in the <b>''f,k''</b> <b>domain</b> or <b>''f,k''</b> <b>space</b>, frequency and wavenumber are the independent variable
  1 KB (183 words) - 22:45, 7 June 2017
• Dictionary:Double-square-root equation
  ...os&#x03BE;sin&#x03BE;, where &#x03BE; is the dip (Levin, 1971)<ref> Levin, F. K., 1971, Apparent velocity from dipping interface reflections: Geophysics
  3 KB (432 words) - 16:07, 31 January 2017
• Dictionary:Earth holography
  (&#x2202;rth h&#x014D;&#x2019;log r&#x2202; f&#x0113;) Recording of the wave pattern from a constant frequency source alo
  506 bytes (73 words) - 13:51, 6 February 2017
• Dictionary:Eccentricity
  ...b = 1/(1-f) = (1 - \varepsilon^2)^{-1/2}</math>; <b>flattening</b> <math>= f = (a - b)/a = 1 - 1/E</math>; and <math>\theta</math> = <b>eccentric</b> <b
  1 KB (212 words) - 13:35, 23 December 2018
• Dictionary:ECF
  <b>E</b>levation <b>C</b>orrection <b>F</b>actor. See [[Dictionary:elevation_correction|''elevation correction'']].
  190 bytes (27 words) - 12:54, 17 October 2016
• Dictionary:E-layer
  ...tionary:Fig_A-22|A-22]] and also ''[[Special:MyLanguage/Dictionary:F-layer|F-layer]]'' and ''[[Special:MyLanguage/Dictionary:D-layer|D-layer]]''. <b>2</
  635 bytes (97 words) - 13:33, 6 February 2017
• Dictionary:ELF
  <b>E</b>xtremely <b>L</b>ow <b>F</b>requency; electromagnetic energy between 300 and 3000 Hz. Natural energy
  385 bytes (53 words) - 17:54, 29 July 2018
• Dictionary:Erf(x)
  [[Special:MyLanguage/Dictionary:error_function|<b>''ER''</b>''ror''<b>''F''</b>''unction'']] (q.v.).
  230 bytes (29 words) - 18:01, 19 February 2017
• Dictionary:Euler’s homogeneity equation
  ...r><math>(x-x_0)\frac{dF}{dx}+(y-y_0)\frac{dF}{dy}+(z-z_0)\frac{dF}{dz}=N(B-F)</math>,</center> ..._{0},y_{0},z_{0})</math> is the source location whose magnetic field <math>F</math> is measured at <math>(x,y,z)</math>; ''B'' is the regional value of
  1 KB (181 words) - 22:01, 22 February 2017
• Dictionary:Even function
  ...same value when the sign of the variable is changed; i.e., ''f''(''x'')=''f''(&#x2013;''x''). The Fourier transform of an even function is the <b>cosin
  527 bytes (82 words) - 10:32, 27 February 2017
• Dictionary:Exponential distribution
  <center><math>F(f)=1-e^{-f\phi}</math>,</center> ...the mean. It has a high initial value and then declines with increasing ''f''. Often used to model effects that vary with their separation.
  413 bytes (61 words) - 14:42, 7 February 2017
• Dictionary:F
  {{#category_index:F|F}} ...es the storage of one coulomb. (See [[Special:MyLanguage/Dictionary:farad_(F)|''farad'']]).
  274 bytes (37 words) - 07:54, 18 April 2017
• Dictionary:Fabric
  {{#category_index:F|fabric}}
  864 bytes (92 words) - 20:30, 21 October 2019
• Dictionary:Facies
  {{#category_index:F|facies}} (f&#x0101;&#x2019; sh&#x0113;z) <b>1</b>. The characteristics that distinguish
  515 bytes (64 words) - 21:55, 9 April 2017
• Dictionary:Facies analysis
  {{#category_index:F|facies analysis}}
  215 bytes (23 words) - 17:12, 10 April 2017
• Dictionary:Factor analysis
  {{#category_index:F|factor analysis}}
  1 KB (163 words) - 20:38, 21 October 2019
• Dictionary:Fade
  {{#category_index:F|fade}}
  162 bytes (17 words) - 07:55, 18 April 2017
• Dictionary:Failed arm
  {{#category_index:F|failed arm}}
  314 bytes (45 words) - 07:56, 18 April 2017
• Dictionary:Fairing
  {{#category_index:F|fairing}}
  517 bytes (71 words) - 07:56, 18 April 2017
• Dictionary:Fairway
  {{#category_index:F|fairway}}
  447 bytes (64 words) - 07:57, 18 April 2017
• Dictionary:FAL
  {{#category_index:F|FAL}} [[Special:MyLanguage/Dictionary:formation-analysis_log_(FAL)|<b>''F''</b>''ormation''-<b>''A''</b>''nalysis'' <b>''L''</b>''og'']] (q.v.).
  239 bytes (31 words) - 21:01, 22 October 2019
• Dictionary:False color
  {{#category_index:F|false color}}
  456 bytes (59 words) - 07:57, 18 April 2017
• Dictionary:False crossover
  {{#category_index:F|false crossover}}
  194 bytes (26 words) - 08:12, 18 April 2017
• Dictionary:False easting, false northing
  {{#category_index:F|false easting, false northing}}
  250 bytes (28 words) - 08:12, 18 April 2017
• Dictionary:Faltung
  {{#category_index:F|faltung}}
  258 bytes (29 words) - 08:12, 18 April 2017
• Dictionary:Famous
  {{#category_index:F|Famous}}
  213 bytes (23 words) - 21:07, 22 October 2019
• Dictionary:Fan-filter
  {{#category_index:F|fan-filter}}
  197 bytes (21 words) - 16:08, 25 February 2017
• Dictionary:Fan shooting
  {{#category_index:F|fan shooting}} ...l high-velocity bodies. See Figure [[Special:MyLanguage/Dictionary:Fig_F-1|F-1]].
  242 bytes (29 words) - 08:14, 18 April 2017
• Dictionary:Fantom
  {{#category_index:F|fantom}}
  177 bytes (19 words) - 16:09, 25 February 2017
• Dictionary:Farad (F)
  {{#category_index:F|farad (F)}}
  292 bytes (39 words) - 08:15, 18 April 2017
• Dictionary:Faradaic
  {{#category_index:F|faradaic}}
  512 bytes (70 words) - 08:15, 18 April 2017
• Dictionary:Faraday
  {{#category_index:F|faraday}}
  259 bytes (31 words) - 08:16, 18 April 2017
• Dictionary:Faraday’s law of induction
  {{#category_index:F|Faraday&#x2019;s law of induction}}
  748 bytes (129 words) - 10:30, 20 April 2021
• Dictionary:Far-angle stack
  {{#category_index:F|far-angle stack}}
  363 bytes (52 words) - 16:09, 25 February 2017
• Dictionary:Far-field
  {{#category_index:F|far-field}}
  572 bytes (77 words) - 08:15, 18 April 2017
• Dictionary:Farm-out, farm-in
  {{#category_index:F|farm-out, farm-in}}
  312 bytes (42 words) - 08:17, 18 April 2017
• Dictionary:Far-offset stack
  {{#category_index:F|far-offset stack}}
  313 bytes (42 words) - 16:09, 25 February 2017
• Dictionary:Far-zone sounding
  {{#category_index:F|far-zone sounding}}
  506 bytes (59 words) - 11:11, 10 January 2019
• Dictionary:Fast Fourier transform (FFT)
  {{#category_index:F|fast Fourier transform (FFT)}}
  441 bytes (53 words) - 08:54, 23 February 2017
• Dictionary:Fast in, slow out (FISO)
  {{#category_index:F|fast in, slow out (FISO)}}
  225 bytes (27 words) - 20:29, 29 July 2018
• Dictionary:Fathom
  {{#category_index:F|fathom}}
  133 bytes (15 words) - 11:32, 10 January 2019
• Dictionary:Fathometer
  {{#category_index:F|fathometer}}
  229 bytes (31 words) - 19:26, 12 August 2018
• Dictionary:Fatigue
  {{#category_index:F|fatigue}}
  209 bytes (25 words) - 11:33, 10 January 2019
• Dictionary:Fault
  {{#category_index:F|fault}} ...uage/Dictionary:Fig_F-3|F-3]], and [[Special:MyLanguage/Dictionary:Fig_F-4|F-4]].
  5 KB (824 words) - 10:58, 9 April 2019
• Dictionary:Fault cut
  {{#category_index:F|fault cut}}
  188 bytes (22 words) - 11:34, 10 January 2019
• Dictionary:Faulted slab
  {{#category_index:F|faulted slab}}
  215 bytes (25 words) - 11:43, 10 January 2019
• Dictionary:Fault-plane solutions
  {{#category_index:F|fault-plane solutions}}
  354 bytes (44 words) - 19:27, 12 August 2018
• Dictionary:Fault polygons
  {{#category_index:F|fault polygons}}
  300 bytes (37 words) - 11:36, 10 January 2019
• Dictionary:Fault seal analysis
  {{#category_index:F|fault seal analysis}}
  667 bytes (94 words) - 20:42, 29 July 2018
• Dictionary:Fault shadow
  {{#category_index:F|fault shadow}}
  373 bytes (55 words) - 11:37, 10 January 2019
• Dictionary:Fault slice
  {{#category_index:F|fault slice}} ...13;22, 225&#x2013;232) and Figures [[Special:MyLanguage/Dictionary:Fig_F-5|F-5]] and [[Special:MyLanguage/Dictionary:Fig_T-5|T-5]].
  1 KB (184 words) - 11:40, 10 January 2019
• Dictionary:Fault trace
  {{#category_index:F|fault trace}}
  208 bytes (30 words) - 20:48, 29 July 2018
• Dictionary:Faust’s equations
  {{#category_index:F|Faust&#x2019;s equations}}
  1 KB (198 words) - 10:29, 16 March 2020
• Dictionary:FD
  {{#category_index:F|FD}} <b>F</b>requency <b>D</b>omain. See [[Special:MyLanguage/Dictionary:frequency-do
  221 bytes (27 words) - 11:47, 10 January 2019
• Dictionary:FDC
  {{#category_index:F|FDC}} <b>C</b>ompensated <b>F</b>ormation-<b>D</b>ensity log; see [[Special:MyLanguage/Dictionary:density
  247 bytes (35 words) - 11:48, 10 January 2019
• Dictionary:FDEM, FEM
  {{#category_index:F|FDEM, FEM}} <b>F</b>requency-<b>D</b>omain <b>E</b>lectro<b>M</b>agnetics; see [[Special:MyL
  261 bytes (36 words) - 20:52, 29 July 2018
• Dictionary:FDL
  {{#category_index:F|FDL}} <b>F</b>ormation-<b>D</b>ensity <b>L</b>og; see [[Special:MyLanguage/Dictionary:
  210 bytes (31 words) - 11:48, 10 January 2019
• Dictionary:Feathering
  {{#category_index:F|feathering}} ...e to the seismic line. See Figures [[Special:MyLanguage/Dictionary:Fig_F-6|F-6]] and [[Special:MyLanguage/Dictionary:Fig_T-4|T-4]].
  1 KB (205 words) - 19:52, 9 January 2019
• Dictionary:Feather edge
  {{#category_index:F|feather edge}}
  355 bytes (53 words) - 19:27, 12 August 2018
• Dictionary:Feather pattern
  {{#category_index:F|feather pattern}}
  325 bytes (45 words) - 19:41, 9 January 2019
• Dictionary:Feedback
  {{#category_index:F|feedback}}
  470 bytes (73 words) - 11:48, 7 November 2018
• Dictionary:Feedback filter
  {{#category_index:F|feedback filter}}
  204 bytes (22 words) - 16:09, 25 February 2017
• Dictionary:Fejer kernel window
  {{#category_index:F|Fejer kernel window}} (f&#x0101;&#x2019; j&#x2202;r)
  476 bytes (68 words) - 20:57, 29 July 2018
• Dictionary:Felsic
  {{#category_index:F|felsic}}
  279 bytes (35 words) - 19:56, 9 January 2019
• Dictionary:FEM=FDEM
  {{#category_index:F|''FEM''=''FDEM''}} <b>F</b>requency-<b>D</b>omain <b>E</b>lectro<b>M</b>agnetics; see [[Special:MyL
  268 bytes (36 words) - 10:26, 20 April 2021
• Dictionary:Fence diagram
  {{#category_index:F|fence diagram}} ...fence-diagram is shown in Figures [[Special:MyLanguage/Dictionary:Fig_F-7|F-7]] and [[Special:MyLanguage/Dictionary:Fig_T-6|T-6]].
  469 bytes (63 words) - 20:58, 29 July 2018
• Dictionary:Fence effect
  {{#category_index:F|fence effect}}
  450 bytes (63 words) - 16:59, 9 April 2019
• Dictionary:Fermat path
  {{#category_index:F|Fermat path}}
  245 bytes (33 words) - 17:38, 29 October 2018
• Dictionary:Fermat’s principle
  {{#category_index:F|Fermat&#x2019;s principle}}
  777 bytes (120 words) - 10:30, 16 March 2020
• Dictionary:Ferrimagnetism
  {{#category_index:F|ferrimagnetism}}
  543 bytes (66 words) - 20:08, 9 January 2019
• Dictionary:Ferromagnetic
  {{#category_index:F|ferromagnetic}}
  779 bytes (103 words) - 17:08, 30 October 2018
• Dictionary:FET
  {{#category_index:F|FET}} [[Special:MyLanguage/Dictionary:field-effect_transistor_(FET)|<b>''F''</b>''ield''-<b>''E''</b>''ffect'' <b>''T''</b>''ransistor'']] (q.v.).
  241 bytes (31 words) - 17:39, 29 October 2018
• Dictionary:Fetch
  {{#category_index:F|fetch}}
  306 bytes (43 words) - 17:09, 30 October 2018
• Dictionary:FFI
  {{#category_index:F|FFI}} ...cial:MyLanguage/Dictionary:free-fluid_index_(FFI)|<b>''F''</b>''ree'' <b>''F''</b>''luid'' <b>''I''</b>''ndex'']] (q.v.). See also [[Special:MyLanguage/
  334 bytes (42 words) - 17:39, 29 October 2018
• Dictionary:FFT
  {{#category_index:F|FFT}} ...yLanguage/Dictionary:fast_Fourier_transform_(FFT)|<b>''F''</b>''ast'' <b>''F''</b>''ourier'' <b>''T''</b>''ransform'']] (q.v.).
  238 bytes (32 words) - 17:18, 30 October 2018
• Dictionary:Fick’s law
  {{#category_index:F|Fick&#x2019;s law}}
  268 bytes (41 words) - 10:30, 16 March 2020
• Dictionary:Fiducials
  {{#category_index:F|fiducials}}
  460 bytes (73 words) - 20:58, 29 July 2018
• Dictionary:Fiducial time
  {{#category_index:F|fiducial time}}
  308 bytes (44 words) - 17:18, 30 October 2018
• Dictionary:Field
  {{#category_index:F|field}}
  795 bytes (115 words) - 17:18, 30 October 2018
• Dictionary:Field balance
  {{#category_index:F|field balance}}
  209 bytes (23 words) - 17:18, 30 October 2018
• Dictionary:Field continuation
  {{#category_index:F|field continuation}}
  196 bytes (19 words) - 20:58, 29 July 2018
• Dictionary:Field-effect transistor (FET)
  {{#category_index:F|field-effect transistor (FET)}}
  474 bytes (65 words) - 21:02, 29 July 2018
• Dictionary:Field file
  {{#category_index:F|field file}}
  206 bytes (25 words) - 17:18, 30 October 2018
• Dictionary:Field filter
  {{#category_index:F|field filter}}
  181 bytes (23 words) - 13:12, 1 March 2017
• Dictionary:Field impedance
  {{#category_index:F|field impedance}}
  187 bytes (19 words) - 19:27, 12 August 2018
• Dictionary:Field intensity
  {{#category_index:F|field intensity}}
  464 bytes (70 words) - 19:20, 22 January 2018
• Dictionary:Field of view
  {{#category_index:F|field of view}}
  193 bytes (25 words) - 17:19, 30 October 2018
• Dictionary:Field processing
  {{#category_index:F|field processing}}
  478 bytes (67 words) - 13:13, 1 March 2017
• Dictionary:Field tape
  {{#category_index:F|field tape}}
  278 bytes (39 words) - 13:13, 1 March 2017
• Dictionary:Field timing
  {{#category_index:F|field timing}}
  488 bytes (73 words) - 17:19, 30 October 2018
• Dictionary:Figure of merit
  {{#category_index:F|figure of merit}}
  499 bytes (69 words) - 17:19, 30 October 2018
• Dictionary:Figure of the Earth
  {{#category_index:F|figure of the Earth}}
  186 bytes (22 words) - 19:27, 12 August 2018
• Dictionary:File
  {{#category_index:F|file}}
  312 bytes (46 words) - 14:39, 2 March 2017
• Dictionary:File protect
  {{#category_index:F|file protect}}
  248 bytes (31 words) - 14:40, 2 March 2017
• Dictionary:File transfer protocol (FTP)
  {{#category_index:F|file transfer protocol (FTP)}}
  213 bytes (24 words) - 14:40, 2 March 2017
• Dictionary:Filter
  {{#category_index:F|filter}} ...amplitude may be used. See Figure [[Special:MyLanguage/Dictionary:Fig_F-8|F-8]].
  3 KB (452 words) - 17:19, 30 October 2018
• Dictionary:Filter analysis
  {{#category_index:F|filter analysis}}
  165 bytes (20 words) - 13:13, 1 March 2017
• Dictionary:Filter cake
  {{#category_index:F|filter cake}}
  211 bytes (24 words) - 09:31, 11 April 2019
• Dictionary:Filter correction
  {{#category_index:F|filter correction}}
  208 bytes (25 words) - 13:14, 1 March 2017
• Dictionary:Filtering
  {{#category_index:F|filtering}} ...ary:filter|''filter'']] and Figure [[Special:MyLanguage/Dictionary:Fig_F-8|F-8]].
  435 bytes (56 words) - 13:15, 1 March 2017
• Dictionary:Filter panel
  {{#category_index:F|filter panel}}
  275 bytes (38 words) - 13:14, 1 March 2017
• Dictionary:Filter scan
  {{#category_index:F|filter scan}}
  192 bytes (22 words) - 13:14, 1 March 2017
• Dictionary:Filtrate
  {{#category_index:F|filtrate}}
  282 bytes (37 words) - 10:27, 10 January 2019
• Dictionary:Filtration rate
  {{#category_index:F|filtration rate}}
  670 bytes (107 words) - 21:03, 29 July 2018
• Dictionary:Fines
  {{#category_index:F|fines}}
  150 bytes (17 words) - 10:30, 10 January 2019
• Dictionary:Fingering
  {{#category_index:F|fingering}}
  220 bytes (26 words) - 10:50, 10 January 2019
• Dictionary:Fingerprinting oil
  {{#category_index:F|fingerprinting oil}}
  244 bytes (25 words) - 21:03, 29 July 2018
• Dictionary:Fingers
  {{#category_index:F|fingers}}
  322 bytes (44 words) - 10:51, 10 January 2019
• Dictionary:Fining upward
  {{#category_index:F|fining upward}}
  230 bytes (28 words) - 21:03, 12 August 2018
• Dictionary:Finite-difference method
  {{#category_index:F|finite-difference method}}
  350 bytes (45 words) - 13:15, 1 March 2017
• Dictionary:Finite-element method
  {{#category_index:F|finite-element method}}
  279 bytes (33 words) - 13:15, 1 March 2017
• Dictionary:Fire-flood
  {{#category_index:F|fire-flood}}
  200 bytes (20 words) - 10:55, 10 January 2019
• Dictionary:Firewall
  {{#category_index:F|firewall}}
  170 bytes (19 words) - 14:39, 2 March 2017
• Dictionary:FIR filter
  {{#category_index:F|FIR filter}} A filter with <b>F</b>inite-duration <b>I</b>mpulse <b>R</b>esponse.
  175 bytes (27 words) - 13:16, 1 March 2017
• Dictionary:Firing
  {{#category_index:F|firing}}
  213 bytes (26 words) - 10:57, 10 January 2019
• Dictionary:Firing rate
  {{#category_index:F|firing rate}}
  199 bytes (26 words) - 10:57, 10 January 2019
• Dictionary:Firmware
  {{#category_index:F|firmware}}
  195 bytes (24 words) - 08:32, 14 June 2017
• Dictionary:First arrival
  {{#category_index:F|first arrival}}
  192 bytes (22 words) - 13:16, 1 March 2017
• Dictionary:First break
  {{#category_index:F|first break}}
  442 bytes (59 words) - 13:16, 1 March 2017
• Dictionary:First-break intercept-time method
  {{#category_index:F|first-break intercept-time method}}
  290 bytes (36 words) - 13:16, 1 March 2017
• Dictionary:First motion
  {{#category_index:F|first motion}} ...ve from an earthquake. See Figure [[Special:MyLanguage/Dictionary:Fig_F-10|F-10]].
  275 bytes (38 words) - 21:03, 29 July 2018
• Dictionary:First-order triangulation
  {{#category_index:F|first-order triangulation}}
  205 bytes (19 words) - 18:30, 16 January 2018
• Dictionary:First point of Aries
  {{#category_index:F|first point of Aries}}
  184 bytes (21 words) - 10:31, 10 January 2019
• Dictionary:Fish
  {{#category_index:F|fish}}
  429 bytes (65 words) - 18:30, 16 January 2018
• Dictionary:Fishnet plot
  {{#category_index:F|fishnet plot}}
  253 bytes (34 words) - 18:31, 16 January 2018
• Dictionary:Fishtail bit
  {{#category_index:F|fishtail bit}}
  291 bytes (41 words) - 18:31, 16 January 2018
• Dictionary:Fish trap
  {{#category_index:F|fish trap}}
  191 bytes (24 words) - 18:30, 16 January 2018
• Dictionary:Fission track dating
  {{#category_index:F|fission track dating}}
  695 bytes (109 words) - 18:31, 16 January 2018
• Dictionary:Five-spot pattern
  {{#category_index:F|five-spot pattern}}
  248 bytes (31 words) - 18:32, 16 January 2018
• Dictionary:Fix
  {{#category_index:F|fix}}
  382 bytes (52 words) - 18:32, 16 January 2018
• Dictionary:Fixed data
  {{#category_index:F|fixed data}}
  239 bytes (36 words) - 18:33, 16 January 2018
• Dictionary:Fixed field
  {{#category_index:F|fixed field}}
  151 bytes (17 words) - 18:33, 16 January 2018
• Dictionary:Fixed layer
  {{#category_index:F|fixed layer}}
  319 bytes (47 words) - 18:33, 16 January 2018
• Dictionary:Fixed-layer capacitance
  {{#category_index:F|fixed-layer capacitance}}
  193 bytes (21 words) - 18:32, 16 January 2018
• Dictionary:Fixed point
  {{#category_index:F|fixed point}}
  337 bytes (43 words) - 18:33, 16 January 2018
• Dictionary:Fixed-source method
  {{#category_index:F|fixed-source method}}
  401 bytes (50 words) - 18:32, 16 January 2018
• Dictionary:Fizz water
  {{#category_index:F|fizz water}}
  329 bytes (41 words) - 18:34, 16 January 2018
• Dictionary:F-k analysis
  {{DISPLAYTITLE:''f-k'' analysis|noreplace}} {{#category_index:F|''f-k'' analysis}}
  191 bytes (22 words) - 13:59, 13 June 2017
• Dictionary:F-k domain
  ...-k''</b> <b>plots</b> (see Figure [[Special:MyLanguage/Dictionary:Fig_F-11|F-11]]) in which energy density within a given time interval is contoured on FIG. F-11.
  1 KB (206 words) - 11:29, 11 June 2019
• Dictionary:F-k filtering
  {{DISPLAYTITLE:''f-k'' filtering|noreplace}} {{#category_index:F|''f-k'' filtering}}
  403 bytes (47 words) - 13:55, 13 June 2017
• Dictionary:F-k migration
  {{DISPLAYTITLE:''f-k'' migration|noreplace}} {{#category_index:F|''f-k'' migration}}
  918 bytes (96 words) - 13:49, 13 June 2017
• Dictionary:F-k plot
  See [[Special:MyLanguage/Dictionary:f-k_domain|''f-k'' ''domain'']].
  116 bytes (13 words) - 15:54, 28 November 2020
• Dictionary:Flag, flagging
  {{#category_index:F|flag, flagging}}
  628 bytes (107 words) - 18:34, 16 January 2018
• Dictionary:Flair
  {{#category_index:F|Flair}}
  456 bytes (66 words) - 18:34, 16 January 2018
• Dictionary:Flash memory
  {{#category_index:F|flash memory}}
  211 bytes (30 words) - 14:40, 2 March 2017
• Dictionary:Flat address space
  {{#category_index:F|flat address space}}
  208 bytes (25 words) - 18:35, 16 January 2018
• Dictionary:Flat spot
  {{#category_index:F|flat spot}}
  327 bytes (42 words) - 18:35, 16 January 2018
• Dictionary:Flattened section/surface
  {{#category_index:F|flattened section/surface}} ...of the flattened bed; see Figure [[Special:MyLanguage/Dictionary:Fig_F-12|F-12]]. Useful in studies of variations in the time interval between events a
  780 bytes (112 words) - 20:52, 17 January 2018
• Dictionary:Flattening
  {{#category_index:F|flattening}}
  367 bytes (51 words) - 20:52, 17 January 2018
• Dictionary:Flat-topping
  {{#category_index:F|flat-topping}}
  448 bytes (61 words) - 18:35, 16 January 2018
• Dictionary:F-layer
  {{#category_index:F|F-layer}} ...usually 175 to 250 km high and is found only during daylight. The higher ''F''₂ layer at 250 to 400 km is present both night and day and is t
  712 bytes (114 words) - 08:38, 4 July 2019
• Dictionary:Fled
  {{#category_index:F|fled}}
  171 bytes (19 words) - 20:52, 17 January 2018
• Dictionary:Flexing
  {{#category_index:F|flexing}}
  185 bytes (20 words) - 20:54, 17 January 2018
• Dictionary:Flexural rigidity of the Earth’s crust
  {{lowercase}}{{#category_index:F|flexural rigidity of the Earth&#x2019;s crust}}
  215 bytes (27 words) - 10:32, 16 March 2020
• Dictionary:Flex binning
  {{#category_index:F|flex binning}}
  432 bytes (54 words) - 14:40, 2 March 2017
• Dictionary:Flexural ice wave
  {{#category_index:F|flexural ice wave}}
  424 bytes (61 words) - 20:54, 17 January 2018
• Dictionary:Flexural wave
  {{#category_index:F|flexural wave}}
  301 bytes (46 words) - 20:55, 17 January 2018
• Dictionary:Flight line
  {{#category_index:F|flight line}}
  228 bytes (36 words) - 20:53, 17 January 2018
• Dictionary:Flight-path recovery
  {{#category_index:F|flight-path recovery}}
  291 bytes (37 words) - 20:53, 17 January 2018
• Dictionary:Flip
  {{#category_index:F|flip}}
  163 bytes (20 words) - 20:54, 17 January 2018
• Dictionary:Flip polarity
  {{#category_index:F|flip polarity}}
  188 bytes (23 words) - 14:40, 2 March 2017
• Dictionary:Flip-flop
  {{#category_index:F|flip-flop}}
  479 bytes (72 words) - 20:54, 17 January 2018
• Dictionary:Floating
  {{#category_index:F|floating}}
  190 bytes (23 words) - 20:53, 17 January 2018
• Dictionary:Floating charge
  {{#category_index:F|floating charge}}
  239 bytes (32 words) - 20:53, 17 January 2018
• Dictionary:Floating datum
  {{#category_index:F|floating datum}}
  577 bytes (85 words) - 14:41, 2 March 2017
• Dictionary:Floating point
  {{#category_index:F|floating point}}
  529 bytes (79 words) - 14:41, 2 March 2017
• Dictionary:Flood
  {{#category_index:F|flood}}
  896 bytes (136 words) - 20:55, 17 January 2018
• Dictionary:Flood the topography
  {{#category_index:F|flood the topography}}
  181 bytes (23 words) - 20:56, 17 January 2018
• Dictionary:Flooding surface
  {{#category_index:F|flooding surface}}
  214 bytes (26 words) - 20:55, 17 January 2018
• Dictionary:Flood-plain deposits
  {{#category_index:F|flood-plain deposits}}
  215 bytes (26 words) - 20:55, 17 January 2018
• Dictionary:Flops
  {{#category_index:F|flops}}
  152 bytes (16 words) - 14:41, 2 March 2017
• Dictionary:Floppy disk
  {{#category_index:F|floppy disk}}
  157 bytes (19 words) - 20:56, 17 January 2018
• Dictionary:Flowchart
  {{#category_index:F|flowchart}} ...steps in processing. See Figures [[Special:MyLanguage/Dictionary:Fig_F-14|F-14]] and [[Special:MyLanguage/Dictionary:Fig_P-14|P-14]].
  362 bytes (50 words) - 20:56, 17 January 2018
• Dictionary:Flower structure
  {{#category_index:F|flower structure}} ...ng a number of faults. See Figure [[Special:MyLanguage/Dictionary:Fig_F-15|F-15]].
  432 bytes (54 words) - 20:56, 17 January 2018
• Dictionary:Flowing pressure
  {{#category_index:F|flowing pressure}}
  167 bytes (20 words) - 20:57, 17 January 2018
• Dictionary:Flowmeter
  {{#category_index:F|flowmeter}}
  340 bytes (48 words) - 20:01, 18 January 2018
• Dictionary:Flow test
  {{#category_index:F|flow test}}
  184 bytes (24 words) - 20:57, 17 January 2018
• Dictionary:Fluid factor
  {{#category_index:F|fluid factor}} <center><math> \Delta F=R_P-1.16(V_S/V_P)R_S </math>,</center>
  976 bytes (146 words) - 20:02, 18 January 2018
• Dictionary:Fluid incompressibility
  {{#category_index:F|fluid incompressibility}}
  168 bytes (20 words) - 20:02, 18 January 2018
• Dictionary:Fluid pressure
  {{#category_index:F|fluid pressure}}
  230 bytes (25 words) - 20:02, 18 January 2018
• Dictionary:Fluid replacement
  {{#category_index:F|fluid replacement}}
  201 bytes (26 words) - 20:03, 18 January 2018
• Dictionary:Fluid sampler
  {{#category_index:F|fluid sampler}}
  197 bytes (21 words) - 20:03, 18 January 2018
• Dictionary:Fluid substitution
  {{#category_index:F|fluid substitution}} ...s usually use the (1951) [[wp:Gassmann's_equation|equations]]<ref>Gassmann F. 1951. Über die Elastizität poröser Medien. Vierteljahrsschrift der Natu
  1 KB (189 words) - 11:29, 10 September 2020
• Dictionary:Fluid-travel log
  {{#category_index:F|fluid-travel log}}
  383 bytes (59 words) - 20:01, 18 January 2018
• Dictionary:Fluorimetry
  {{#category_index:F|fluorimetry}}
  246 bytes (33 words) - 20:03, 18 January 2018
• Dictionary:Flushed zone
  {{#category_index:F|flushed zone}}
  247 bytes (29 words) - 20:12, 18 January 2018
• Dictionary:Flutter
  {{#category_index:F|flutter}}
  190 bytes (24 words) - 20:04, 18 January 2018
• Dictionary:Flux
  {{#category_index:F|flux}}
  234 bytes (30 words) - 20:04, 18 January 2018
• Dictionary:Flux density
  {{#category_index:F|flux density}}
  196 bytes (21 words) - 20:04, 18 January 2018
• Dictionary:Fluxgate magnetometer
  {{#category_index:F|fluxgate magnetometer}} ...rder of 0.2 nanotesla. See Figure [[Special:MyLanguage/Dictionary:Fig_F-16|F-16]]. The magnetometer measures the magnetic field component along the axis
  1 KB (143 words) - 20:05, 18 January 2018
• Dictionary:Flyer
  {{#category_index:F|flyer}}
  487 bytes (71 words) - 20:04, 18 January 2018
• Dictionary:FM
  {{#category_index:F|FM}} [[Special:MyLanguage/Dictionary:frequency_modulation_(FM)|<b>''F''</b>''requency'' <b>''M''</b>''odulation'']] (q.v.).
  218 bytes (27 words) - 19:59, 18 January 2018
• Dictionary:FMI
  {{#category_index:F|FMI}} [[Special:MyLanguage/Dictionary:formation_microimager_(FMI)|<b>''F''</b>''ormation'' <b>''M''</b>''icro'' <b>''I''</b>''mager'']] (q.v.).
  237 bytes (31 words) - 20:01, 18 January 2018
• Dictionary:FMS
  {{#category_index:F|FMS}} [[Special:MyLanguage/Dictionary:formation_microscanner_(FMS)|<b>''F''</b>''ormation'' <b>''M''</b>''icro'' <b>''S''</b>''canner'']] (q.v.).
  239 bytes (31 words) - 20:01, 18 January 2018
• Dictionary:Focal length
  {{#category_index:F|focal length}}
  254 bytes (38 words) - 20:05, 18 January 2018
• Dictionary:Focus
  {{#category_index:F|focus}}
  422 bytes (60 words) - 22:07, 9 April 2017
• Dictionary:Focusing analysis
  {{#category_index:F|focusing analysis}}
  285 bytes (36 words) - 14:49, 2 March 2017
• Dictionary:Focused log
  {{#category_index:F|focused log}}
  265 bytes (34 words) - 20:05, 18 January 2018
• Dictionary:Fold
  {{#category_index:F|fold}}
  405 bytes (57 words) - 14:42, 2 March 2017
• Dictionary:Foldback
  {{#category_index:F|foldback}}
  738 bytes (108 words) - 18:45, 6 February 2018
• Dictionary:Folding
  {{#category_index:F|folding}} ...styles are illustrated in Figure [[Special:MyLanguage/Dictionary:Fig_F-17|F-17]]d, e. Folding is <b>disharmonic</b> where the folding of one bed is not
  2 KB (242 words) - 18:46, 6 February 2018
• Dictionary:Folding frequency
  {{#category_index:F|folding frequency}}
  204 bytes (22 words) - 14:42, 2 March 2017
• Dictionary:Fold test
  {{#category_index:F|fold test}}
  270 bytes (38 words) - 18:45, 6 February 2018
• Dictionary:Footprint
  {{#category_index:F|footprint}}
  245 bytes (29 words) - 14:42, 2 March 2017
• Dictionary:Footwall
  {{#category_index:F|footwall}} ...13;21, 225&#x2013;232) and Figures [[Special:MyLanguage/Dictionary:Fig_F-3|F-3]] and [[Special:MyLanguage/Dictionary:Fig_T-5|T-5]]e.
  584 bytes (87 words) - 18:46, 6 February 2018
• Dictionary:Forced regression
  {{#category_index:F|forced regression}}
  209 bytes (24 words) - 18:47, 6 February 2018
• Dictionary:Force majeure
  {{#category_index:F|force majeure}}
  275 bytes (35 words) - 18:46, 6 February 2018
• Dictionary:Fore-reef
  {{#category_index:F|fore-reef}}
  179 bytes (24 words) - 18:47, 6 February 2018
• Dictionary:Foreshock
  {{#category_index:F|foreshock}}
  167 bytes (19 words) - 18:47, 6 February 2018
• Dictionary:Foreign
  {{#category_index:F|foreign}}
  196 bytes (29 words) - 18:59, 6 February 2018
• Dictionary:Foresight
  {{#category_index:F|foresight}}
  260 bytes (34 words) - 18:47, 6 February 2018
• Dictionary:Format
  {{#category_index:F|format}}
  658 bytes (94 words) - 12:35, 15 June 2017
• Dictionary:Formation
  {{#category_index:F|formation}}
  1 KB (159 words) - 18:48, 6 February 2018
• Dictionary:Formation-analysis log (FAL)
  {{#category_index:F|formation-analysis log (FAL)}}
  328 bytes (49 words) - 18:48, 6 February 2018
• Dictionary:Formation damage
  {{#category_index:F|formation damage}}
  194 bytes (23 words) - 18:49, 6 February 2018
• Dictionary:Formation-density log (FDL)
  {{#category_index:F|formation-density log (FDL)}}
  203 bytes (22 words) - 18:48, 6 February 2018
• Dictionary:Formation evaluation
  {{#category_index:F|formation evaluation}}
  706 bytes (96 words) - 18:49, 6 February 2018
• Dictionary:Formation factor
  {{#category_index:F|formation factor}}
  321 bytes (44 words) - 18:49, 6 February 2018
• Dictionary:Formation fluid pressure
  {{#category_index:F|formation fluid pressure}}
  240 bytes (32 words) - 18:50, 6 February 2018
• Dictionary:Formation microimager (FMI)
  {{#category_index:F|formation microimager (FMI)}}
  597 bytes (79 words) - 18:44, 6 February 2018
• Dictionary:Formation microscanner (FMS)
  {{#category_index:F|formation microscanner (FMS)}}
  288 bytes (32 words) - 19:20, 22 January 2018
• Dictionary:Formation test
  {{#category_index:F|formation test}}
  431 bytes (49 words) - 18:50, 6 February 2018
• Dictionary:Form factor
  {{#category_index:F|form factor}}
  338 bytes (50 words) - 18:48, 6 February 2018
• Dictionary:Fortran
  {{#category_index:F|Fortran}} ...ssing and free-form syntax. Fortran HPF (<b>H</b>igh-<b>P</b>erformance <b>F</b>ortran) is designed for parallel processing.
  622 bytes (89 words) - 14:42, 2 March 2017
• Dictionary:Fortsch discontinuity
  {{#category_index:F|Fortsch discontinuity}}
  287 bytes (35 words) - 18:19, 18 February 2018
• Dictionary:Forward bias
  {{#category_index:F|forward bias}}
  174 bytes (19 words) - 18:25, 18 February 2018
• Dictionary:Forward modeling, forward process, forward solution
  {{lowercase}}{{#category_index:F|forward modeling, forward &#x0020;process, forward solution}}
  511 bytes (68 words) - 10:33, 16 March 2020
• Dictionary:Forward shot
  {{#category_index:F|forward shot}}
  217 bytes (31 words) - 18:26, 18 February 2018
• Dictionary:FoRxo
  {{#category_index:F|FoRxo}}
  191 bytes (19 words) - 18:19, 18 February 2018
• Dictionary:Fossil remanence
  {{#category_index:F|fossil remanence}}
  206 bytes (21 words) - 18:26, 18 February 2018
• Dictionary:Foucault current
  {{#category_index:F|Foucault current}}
  282 bytes (34 words) - 18:26, 18 February 2018
• Dictionary:Foundation coefficient
  {{#category_index:F|foundation coefficient}}
  285 bytes (39 words) - 18:27, 18 February 2018
• Dictionary:Fourble
  {{#category_index:F|fourble}}
  185 bytes (23 words) - 18:28, 18 February 2018
• Dictionary:Four-component recording (4-C)
  {{#category_index:F|four-component recording (4-C)}}
  372 bytes (48 words) - 18:27, 18 February 2018
• Dictionary:Four-dimensional data (4D)
  {{#category_index:F|four-dimensional data (4D)}}
  469 bytes (60 words) - 18:27, 18 February 2018
• Dictionary:Fourier analysis
  {{#category_index:F|Fourier analysis}} ...transform]]'' (q.v.). See Figure [[Special:MyLanguage/Dictionary:Fig_F-18|F-18]]. Opposite of Fourier synthesis. Named for Jean Baptiste Joseph Fourier
  2 KB (361 words) - 14:43, 2 March 2017
• Dictionary:Fourier integral
  {{#category_index:F|Fourier integral}}
  191 bytes (20 words) - 14:43, 2 March 2017
• Dictionary:Fourier pairs
  {{#category_index:F|Fourier pairs}} ...1]] (where the domains might be offset-time versus frequency-wavenumber (''f''-''k'' space).
  560 bytes (70 words) - 18:18, 18 February 2018
• Dictionary:Fourier plane
  {{#category_index:F|Fourier plane}}
  194 bytes (22 words) - 14:43, 2 March 2017
• Dictionary:Fourier series
  {{#category_index:F|Fourier series}} For a function <math> f(t) </math> that is absolutely integrable, which is to say that the followi
  13 KB (2,203 words) - 18:29, 18 February 2018
• Dictionary:Fourier synthesis
  {{#category_index:F|Fourier synthesis}} ...omain representation). See Figure [[Special:MyLanguage/Dictionary:Fig_F-18|F-18]]. Fourier synthesis can be thought of as a subset of the [[Special:MyLa
  443 bytes (57 words) - 17:57, 14 November 2017
• Dictionary:Fourier transform
  {{#category_index:F|Fourier transform}} ...re neither odd nor even involve variations of phase with frequency. Note ''f''=1/''t''.]]
  11 KB (1,757 words) - 06:57, 15 June 2017
• Dictionary:Four-shot method
  {{#category_index:F|four-shot method}}
  317 bytes (43 words) - 18:28, 18 February 2018
• Dictionary:Fourth-order sequence
  {{#category_index:F|fourth-order sequence}}
  217 bytes (26 words) - 17:57, 14 November 2017
• Dictionary:Four-way dip
  {{#category_index:F|four-way dip}}
  277 bytes (34 words) - 18:28, 18 February 2018
• Dictionary:FPSO
  {{#category_index:F|FPSO}} <b>F</b>loating <b>P</b>roduction <b>S</b>torage and <b>O</b>ffloading system.
  179 bytes (29 words) - 17:56, 14 November 2017
• Dictionary:Fractals
  {{#category_index:F|fractals}}
  431 bytes (60 words) - 17:58, 14 November 2017
• Dictionary:Fractional halftime
  {{#category_index:F|fractional halftime}}
  159 bytes (19 words) - 17:57, 14 November 2017
• Dictionary:Fracturing
  {{#category_index:F|fracturing}}
  487 bytes (68 words) - 18:01, 14 November 2017
• Dictionary:Fracture log
  {{#category_index:F|fracture log}}
  370 bytes (53 words) - 17:57, 14 November 2017
• Dictionary:Fracture permeability/porosity
  {{#category_index:F|fracture permeability/porosity}}
  1 KB (158 words) - 17:59, 14 November 2017
• Dictionary:Fracture pressure
  {{#category_index:F|fracture pressure}}
  187 bytes (22 words) - 17:59, 14 November 2017
• Dictionary:Fraunhofer diffraction
  {{#category_index:F|Fraunhofer diffraction}} (froun&#x2019; h&#x014D; f&#x2202;r). The special case of [[Special:MyLanguage/Dictionary:Fresnel_diff
  411 bytes (55 words) - 18:01, 14 November 2017
• Dictionary:Free-air anomaly
  {{#category_index:F|free-air anomaly}}
  435 bytes (61 words) - 11:47, 13 February 2017
• Dictionary:Free-air correction
  {{#category_index:F|free-air correction}}
  865 bytes (121 words) - 12:22, 13 February 2017
• Dictionary:Free-air gravity
  {{#category_index:F|free-air gravity}}
  202 bytes (21 words) - 17:51, 13 February 2017
• Dictionary:Free energy
  {{#category_index:F|free energy}}
  211 bytes (21 words) - 18:00, 14 November 2017
• Dictionary:Free-fall gravimetry
  {{#category_index:F|free-fall gravimetry}}
  209 bytes (28 words) - 18:04, 13 February 2017
• Dictionary:Free field
  {{#category_index:F|free field}}
  192 bytes (23 words) - 18:00, 14 November 2017
• Dictionary:Free-fluid index (FFI)
  {{#category_index:F|free-fluid index (FFI)}}
  352 bytes (48 words) - 18:09, 13 February 2017
• Dictionary:Free format
  {{#category_index:F|free format}}
  167 bytes (21 words) - 14:43, 2 March 2017
• Dictionary:Free nutation of the Earth
  {{#category_index:F|free nutation of the Earth}}
  210 bytes (24 words) - 18:00, 14 November 2017
• Dictionary:Free oscillation of the Earth
  {{#category_index:F|free oscillation of the Earth}} ...es in the lowest mode. See Figure [[Special:MyLanguage/Dictionary:Fig_F-23|F-23]] and Fowler (1990, 85).
  356 bytes (47 words) - 18:00, 14 November 2017
• Dictionary:Free-space field
  {{#category_index:F|free-space field}}
  260 bytes (32 words) - 17:59, 14 November 2017
• Dictionary:Freeware
  {{#category_index:F|freeware}}
  181 bytes (23 words) - 18:00, 14 November 2017
• Dictionary:Freezing point
  {{#category_index:F|freezing point}}
  235 bytes (26 words) - 18:00, 14 November 2017
• Dictionary:French model
  {{#category_index:F|French model}} A particular physical model (Figure [[Special:MyLanguage/Dictionary:Fig_F-24|F-24]]) used extensively for demonstrating 3D aspects of seismic data and for
  833 bytes (108 words) - 18:00, 14 November 2017
• Dictionary:Frequency
  {{#category_index:F|frequency}} '''1'''. Symbol, ''f''. The repetition rate of a periodic waveform, measured in &#x2018;&#x2018;
  2 KB (289 words) - 14:44, 2 March 2017
• Dictionary:Frequency domain (FD)
  {{#category_index:F|frequency domain (FD)}}
  255 bytes (31 words) - 14:45, 2 March 2017
• Dictionary:Frequency-domain method
  {{#category_index:F|frequency-domain method}}
  462 bytes (54 words) - 18:03, 14 November 2017
• Dictionary:Frequency-domain migration
  {{#category_index:F|frequency-domain migration}}
  893 bytes (120 words) - 14:47, 2 March 2017
• Dictionary:Frequency-domain sounding
  {{#category_index:F|frequency-domain sounding}}
  225 bytes (21 words) - 14:47, 2 March 2017
• Dictionary:Frequency effect (FE)
  {{#category_index:F|frequency effect (FE)}} ..."inline">\rho_{a2}</math>) made at two frequencies ''f''₁ and ''f''₂, divided by the apparent resistivity at one of the frequencie
  677 bytes (100 words) - 14:46, 2 March 2017
• Dictionary:Frequency filtering
  {{#category_index:F|frequency filtering}}
  194 bytes (20 words) - 14:46, 2 March 2017
• Dictionary:Frequency modulation (FM)
  {{#category_index:F|frequency modulation (FM)}}
  433 bytes (58 words) - 14:46, 2 March 2017
• Dictionary:Frequency panel
  {{#category_index:F|frequency panel}}
  203 bytes (26 words) - 14:46, 2 March 2017
• Dictionary:Frequency response
  {{#category_index:F|frequency response}}
  266 bytes (31 words) - 14:46, 2 March 2017
• Dictionary:Frequency slices
  {{#category_index:F|frequency slices}}
  221 bytes (26 words) - 14:47, 2 March 2017
• Dictionary:Frequency sounding
  {{#category_index:F|frequency sounding}}
  220 bytes (21 words) - 18:03, 14 November 2017
• Dictionary:Frequency spectrum
  {{#category_index:F|frequency spectrum}}
  278 bytes (32 words) - 14:47, 2 March 2017
• Dictionary:Frequency standard
  {{#category_index:F|frequency standard}}
  595 bytes (82 words) - 18:05, 14 November 2017
• Dictionary:Fresh
  {{#category_index:F|fresh}}
  380 bytes (52 words) - 18:04, 14 November 2017
• Dictionary:Fresnel diffraction
  {{#category_index:F|Fresnel diffraction}}
  350 bytes (38 words) - 18:04, 14 November 2017
• Dictionary:Fresnel lens
  {{#category_index:F|Fresnel lens}}
  177 bytes (20 words) - 18:05, 14 November 2017
• Dictionary:Fresnel zone
  {{#category_index:F|Fresnel zone}} ...t Fresnel zone is shown in Figure [[Special:MyLanguage/Dictionary:Fig_F-26|F-26]]. See Sheriff and Geldart (1995, 152). <b>3</b>. A <b>Fresnel lens</b>
  1 KB (207 words) - 18:05, 14 November 2017
• Dictionary:Fringe
  {{#category_index:F|fringe}}
  590 bytes (89 words) - 18:05, 14 November 2017
• Dictionary:Front end
  {{#category_index:F|front end}}
  219 bytes (32 words) - 18:06, 14 November 2017
• Dictionary:Frontier area
  {{#category_index:F|frontier area}}
  210 bytes (26 words) - 18:05, 14 November 2017
• Dictionary:Front-loaded
  {{#category_index:F|front-loaded}}
  195 bytes (21 words) - 18:05, 14 November 2017
• Dictionary:Front-to-back ratio
  {{#category_index:F|front-to-back ratio}}
  213 bytes (21 words) - 15:12, 22 November 2017
• Dictionary:Frost breaks
  {{#category_index:F|frost breaks}}
  309 bytes (42 words) - 18:06, 14 November 2017
• Dictionary:Frown
  {{#category_index:F|frown}}
  222 bytes (24 words) - 18:07, 14 November 2017
• Dictionary:FTP
  {{#category_index:F|FTP}} [[Special:MyLanguage/Dictionary:file_transfer_protocol_(FTP)|<b>''F''</b>''ile'' <b>''T''</b>''ransfer'' <b>''P''</b>''rotocol'']] (q.v.).
  238 bytes (32 words) - 17:58, 14 November 2017
• Dictionary:Fuller filter
  {{#category_index:F|Fuller filter}}
  181 bytes (21 words) - 14:48, 2 March 2017
• Dictionary:Function
  {{#category_index:F|function}}
  205 bytes (30 words) - 14:48, 2 March 2017
• Dictionary:Functionality
  {{#category_index:F|functionality}}
  163 bytes (19 words) - 18:06, 14 November 2017
• Dictionary:Function key
  {{#category_index:F|function key}}
  255 bytes (36 words) - 14:48, 2 March 2017
• Dictionary:Fundamental
  {{#category_index:F|fundamental}}
  204 bytes (26 words) - 14:48, 2 March 2017
• Dictionary:Fundamental strength
  {{#category_index:F|fundamental strengh}}
  319 bytes (40 words) - 14:01, 31 October 2019
• Dictionary:Funnel shaped
  {{#category_index:F|funnel shaped}}
  263 bytes (28 words) - 18:06, 14 November 2017
• Dictionary:Fuzzy logic
  {{#category_index:F|fuzzy logic}}
  252 bytes (32 words) - 18:06, 14 November 2017
• Dictionary:Gabor wavelet
  <center><math>F(t)=e^{-\left(\frac{2\pi f_M t}{\gamma}\right)^2} cos\left(2\pi f_M t +\phi\ where ''t'' is time, ''f''_''M'' is the main frequency, and <math> \gamma </math> is an ar
  817 bytes (111 words) - 18:21, 14 April 2017
• Dictionary:Gardner’s equation
  '''Gardner's equation''', or '''Gardner's relation''', named after G. H. F. Gardner and L. W. Gardner, is an empirically derived equation that relates ...ta = 0.25</math>.<ref name="Gardner">{{cite journal|last=Gardner|first=G.H.F.|coauthors=Gardner L.W. & Gregory A.R.|year=1974|title=Formation velocity a
  3 KB (402 words) - 16:00, 11 April 2017
• Dictionary:Gassmann equation
  ==Fluid substitution<ref>Gassmann F. 1951. Über die Elastizität poröser Medien. Vierteljahrsschrift der Natu
  1 KB (144 words) - 12:46, 11 September 2020
• Dictionary:Geophysics
  ...ng glaciology); (d) <b>physical oceanography</b>; (e) <b>meteorology</b>; (f) <b>gravity</b> and <b>geodesy</b> (the Earth&#x2019;s gravitational field
  2 KB (230 words) - 07:27, 16 March 2017
• Dictionary:Gibbs’ phenomenon
  ...atician and physicist. See Figure [[Special:MyLanguage/Dictionary:Fig_F-18|F-18]] and [[Special:MyLanguage/Dictionary:References|Sheriff and Geldart (19
  799 bytes (103 words) - 12:16, 3 July 2018
• Dictionary:Global optimization
  ...hrough the maximization or minimization of a scalar valued function <math> f(x) </math> called the ''objective function'' which may be subject to <math>
  945 bytes (145 words) - 14:46, 25 July 2018
• Dictionary:Goussev filter
  (gaus&#x2019; &#x2202;f) A space-domain operator that calculates the scalar difference between the
  356 bytes (47 words) - 06:16, 16 February 2017
• Dictionary:Grading
  ...Sometimes grading systems employ letters: ''vg''=very good, ''g''=good, ''f''=fair, ''p''=poor, ''vp''=very poor, and ?=questionable. Coherency-measuri
  650 bytes (87 words) - 12:30, 16 February 2017
• Dictionary:Gravitational constant
  ...in <b>Newton's Law of Universal Gravitation</b>. The gravitational force ''F'' between two point masses ''m''₁ and ''m''₂ can be r <center><math>F = \frac {\gamma m_1 m_2}{r^2} </math></center>
  992 bytes (158 words) - 07:28, 17 February 2017
• Dictionary:Green's theorem
  If ''F'' and ''G'' are two scalar functions, then ...t \left(F\nabla^2 G-G\nabla^2 F \right)dv = \iint \left( F\nabla G-G\nabla F \right) \cdot d\mathbf{s}</math>,</center>
  937 bytes (138 words) - 10:38, 20 April 2021
• Dictionary:Ground roll
  ...d reflection signals. Source and geophone patterns, frequency filtering, ''f''-''k'' filtering, and stacking are used to discriminate against it. It is
  661 bytes (92 words) - 17:30, 29 August 2017
• Dictionary:Group velocity
  <center><math> U=V-\lambda\left(\frac{dV}{d\lambda}\right) = V+f\left(\frac{dV}{df}\right) </math>,</center> where &#x03BB;=wavelength and ''f''=frequency. ''[[Special:MyLanguage/Dictionary:normal-mode_propagation|Norm
  3 KB (395 words) - 12:49, 16 April 2017
• Dictionary:Hade
  The complement of dip; see Figure [[Special:MyLanguage/Dictionary:Fig_F-2|F-2]].
  194 bytes (24 words) - 10:53, 1 July 2016
• Dictionary:Hanging wall
  ...013;21, 225&#x2013;232) and Figure [[Special:MyLanguage/Dictionary:Fig_F-2|F-2]].
  543 bytes (80 words) - 10:58, 1 July 2016
• Dictionary:Hankel transform
  ...The Hankel transform of order <math> m </math> of the real function <math> f(t)</math> is <center> <math> F(s) = \int J_m(st) \; dt </math></center>
  490 bytes (75 words) - 19:19, 12 April 2019
• Dictionary:Hessian matrix
  ...) The matrix of second partial derivatives of a function. For a function ''f''(''x''₁,''x''₂,...,''x''_''n''), the Hessi h_{ij}=\frac{\partial^2 f}{\partial x_i \partial x_j}
  492 bytes (74 words) - 16:25, 23 July 2017
• Dictionary:HFMAG
  [[Dictionary:high-frequency_magnetics_(HFMAG)|<b>''H''</b>''igh''-<b>''F''</b>''requency'' <b>''MAG''</b>''netics'']] (q.v.).
  202 bytes (27 words) - 12:59, 24 July 2017
• Dictionary:HFVS
  ...anguage/Dictionary:high-fidelity_vibroseis_(HFVS)|<b>''H''</b>''igh''-<b>''F''</b>''idelity'' <b>''V''</b>''ibro''<b>''S''</b>''eis'']] (q.v.).
  257 bytes (35 words) - 11:00, 1 July 2016
• Dictionary:HFU
  [[Special:MyLanguage/Dictionary:heat_flow_unit_(HFU)|<b>''H''</b>''eat'' <b>''F''</b>''low'' <b>''U''</b>''nit'']] (q.v.).
  222 bytes (32 words) - 11:00, 1 July 2016
• Dictionary:High-resolution thermometer
  ...ogging open or cased boreholes with a temperature resolution of 0.5&#x00B0;F.
  262 bytes (31 words) - 12:42, 1 July 2016
• Dictionary:Hilbert transform
  <center> <math> f(z) = \frac{1}{2 \pi i} \oint_C \frac{f(w)\; dw }{w - z}. </math> </center> <math> f(z) = \mbox{Re}\; f + i \mbox{Im}\; f. </math> the function is a complex-valued function of <math> z </math>. The
  15 KB (2,476 words) - 13:44, 12 September 2018
• Dictionary:Hilbert-transform technique
  ...et is minimum phase, the wavelet's frequency-domain representation ''W''(''f'') is <center><math> W(f)=A(f)e^{i\gamma(f)}=\vert P(f)\vert^{1/2}e^{i\gamma(f)} </math>.</center>
  1 KB (221 words) - 15:08, 24 July 2017
• Dictionary:Hinge fault
  ...<b>scissors fault</b>. See Figure [[Special:MyLanguage/Dictionary:Fig_F-3|F-3]].
  362 bytes (53 words) - 15:50, 24 July 2017
• Dictionary:Iff
  <b>IF</b> and only i<b>F</b>, a mathematical or computer logical operation.
  188 bytes (27 words) - 23:22, 18 January 2017
• Dictionary:IFP
  <b>I</b>nstantaneous <b>F</b>loating <b>P</b>oint; see [[Special:MyLanguage/Dictionary:gain_control|'
  219 bytes (31 words) - 22:05, 13 April 2019
• Dictionary:IGRF
  ...>''nternational'' <b>''G''</b>''eomagnetic'' <b>''R''</b>''eference'' <b>''F''</b>''ield'']] (q.v.).
  293 bytes (37 words) - 16:42, 8 February 2017
• Dictionary:Impedance
  ''Z'' is in ohms when frequency ''f'' is in hertz, ''L'' is inductance in henrys, and ''C'' is capacitance in f
  2 KB (326 words) - 15:44, 7 March 2017
• Dictionary:Independent variable
  In the equation ''y''=''f''(''x''), ''x'' (the argument of ''f'') is the independent variable.
  224 bytes (28 words) - 23:21, 18 January 2017
• Dictionary:Initialize
  ...he loop is executed (as in Figure [[Special:MyLanguage/Dictionary:Fig_F-14|F-14]]). Some systems assume initial values of zero and so do not require ini
  591 bytes (84 words) - 07:05, 30 July 2018
• Dictionary:Insonify
  (in son&#x2019; &#x2202; f&#x012B;) To illuminate with sonic (seismic) energy.
  196 bytes (25 words) - 10:59, 10 April 2019
• Dictionary:Instantaneous frequency
  ...cdot \displaystyle \frac{dg}{dt}-g(x,t) \cdot \displaystyle \frac{df}{dt}}{f^2(x,t)+g^2(x,t)}</math></center> ...:MyLanguage/Dictionary: hilbert_transform|''Hilbert transform'']] of <math>f(t)</math>. Instantaneous frequencies relate the wave propagation and deposi
  3 KB (387 words) - 22:47, 14 August 2018
• Dictionary:Instantaneous phase
  <center><math>\phi(t) = \arctan \left( \frac{\mbox{Im} \; F(t)}{\mbox{Re} \; F(t)} \right) </math></center> ...he seismic trace and ''Re F(t)'' is the real part of the seismic data ''Im F(t)'' is the imaginary part of the complex trace.Since, most of the time, wa
  2 KB (250 words) - 18:20, 24 April 2019
• Dictionary:Ionosphere
  ...uage/Dictionary:E-layer|E-layer]], [[Special:MyLanguage/Dictionary:F-layer|F-layer]]'', and ''refraction correction''.
  688 bytes (94 words) - 18:43, 8 February 2017
• Dictionary:Josephson junction
  (i&#x014D;&#x2019; s&#x2202;f s&#x2202;n) A thin insulator separating two superconducting materials, thro
  284 bytes (37 words) - 14:48, 28 August 2017
• Dictionary:Κ
  ...><math>\text{wavenumber}=\frac{1}{\lambda} = k = \frac{\kappa}{2\pi}=\frac{f}{V}</math></center> ...e spatial sense as angular frequency <math>\omega</math> is to frequency ''f'' in the time sense. Confusingly, both <math>\kappa</math> and ''k'' are of
  1 KB (192 words) - 13:36, 11 June 2020
• Dictionary:Karhunen-Loeve transform
  ...lue decomposition'']] (q.v.). See<ref>{{cite journal |last=Jones |first=I. F |last2=Levy |first2=S |date=1987 |title=Signal-to-noise ratio enhancement i
  612 bytes (72 words) - 16:59, 18 June 2019
• Dictionary:Kernel function
  <center><math>F(\xi) = \int_{-\infty}^\infty \!\! K(x,\xi) \, f(x) \, \mathrm{d}x</math></center>
  2 KB (289 words) - 21:16, 28 March 2017
• Dictionary:Κ-κ domain
  ...-direction and wavenumber in the ''z''-direction (depth). Similar to the ''f'', ''k'' domain except with the frequency variable replaced by &#x03BA;''V'
  432 bytes (63 words) - 22:55, 27 March 2017
• Dictionary:Laplace transform
  <center><math>F(s) =\int f(t) e^{-st} dt </math></center> <center><math>f(t)= \frac{1}{2 \pi i} \int F(s)e^{st}ds</math></center>
  1 KB (231 words) - 22:56, 3 September 2017
• Dictionary:Laplacian distribution
  <center><math> f(x) = \frac{1}{\sigma} e^{-\frac{|x-\mu|}{\sigma}}</math></center>
  591 bytes (85 words) - 15:08, 7 September 2017
• Dictionary:Laserscan
  ...tion) separates into the spacing components of the record section (as in ''f'',''k'' space). One lens thus accomplishes a Fourier transform of the recor
  1 KB (208 words) - 20:55, 7 September 2017
• Dictionary:Left-lateral fault
  ...has moved to the left. See Figure [[Special:MyLanguage/Dictionary:Fig_F-3|F-3]].
  271 bytes (34 words) - 09:53, 5 April 2019
• Dictionary:Leibnitz rule
  ...la for the ''n''^th derivative of the product of two functions ''f'' and ''g'': <center><math>\frac{d_{n}(fg)}{dx^{n}}=\sum _{k}[n:k]\frac{d^{n-k}f}{dx^{n-k}}\frac{d^{k}g}{dx^{k}}</math></center>
  501 bytes (83 words) - 18:01, 17 April 2018
• Dictionary:Linear sweep
  ...is the starting frequency and ''b'' is the rate of change of frequency d''f''/d''t''. See Figure [[Special:MyLanguage/Dictionary:Fig_V-12|V-12]].
  571 bytes (87 words) - 16:59, 26 August 2017
• Dictionary:Linear system
  ...frequency ''f''₁, the output will contain only the frequency ''f''₁; the amplitude and phase may be changed, however. The <b>rule
  720 bytes (117 words) - 18:02, 26 August 2017
• Dictionary:LOP
  ...nguage/Dictionary:line_of_position_(LOP)|<b>''L''</b>''ine'' <b>''O''</b>''f'' <b>''P''</b>''osition'']] (q.v.).
  226 bytes (32 words) - 09:37, 7 April 2019
• Dictionary:LOS
  ...cial:MyLanguage/Dictionary:line_of_sight|<b>''L''</b>''ine'' <b>''O''</b>''f'' <b>''S''</b>''ight'']] (q.v.).
  215 bytes (31 words) - 15:13, 17 April 2019
• Dictionary:Mafic
  ...ock composed of a ferromagnesium mineral. Mnemonic for <b>MA</b>gnesium+<b>F</b>err<b>IC</b>. Compare [[Special:MyLanguage/Dictionary:felsic|''felsic'']
  305 bytes (44 words) - 16:16, 15 August 2017
• Dictionary:Magnetic data correction
  ...) instrument drift (d) flight elevation, (e) location errors and misties, (f) the [[Special:MyLanguage/Dictionary:International_Geomagnetic_Reference_Fi
  625 bytes (81 words) - 12:25, 30 July 2017
• Dictionary:Magnetic field
  ...2</sup>=10⁹&#x0020;gamma). <b>B</b> is defined via the force <b>F</b> on a charge ''q'' moving with velocity <b>v</b>: <center><math>\mathbf{F}=q\mathbf{v}\times\mathbf{B}</math></center>
  3 KB (465 words) - 19:31, 30 July 2017
• Dictionary:Magnetotelluric (MT) method
  ...Apparent resistivity <math>\rho_{a}</math>as a function of frequency <math>f</math> is calculated: ...rho_{a}=\frac{1}{\mu \omega} \Big( \frac{E_{i}}{H_{j}}\Big)^2, \omega=2\pi f</math></center>
  2 KB (254 words) - 22:26, 9 March 2017
• Dictionary:Map convolution
  ...may be weighted and sometimes a bias is included (i.e., &#x03A3;&#x03A3;''f''_{&#x03B1;,&#x03B2;}&#x2260;0), so that the residual does not chan
  1 KB (203 words) - 22:06, 20 March 2017
• Dictionary:Map projection
  ...b>) A <b>stereographic projection</b> is both azimuthal and conformal. (<b>f</b>) A <b>polyconic</b> has a straight central meridian and each parallel i
  2 KB (322 words) - 22:06, 20 March 2017
• Dictionary:Mf
  Subscript used with log terms to indicate values for the <b>M</b>ud <b>F</b>iltrate.
  196 bytes (30 words) - 21:37, 7 May 2017
• Dictionary:MF
  [[Special:MyLanguage/Dictionary:metal_factor_(MF)|<b>''M''</b>''etal'' <b>''F''</b>''actor'']] (q.v.).
  201 bytes (27 words) - 21:35, 7 May 2017
• Dictionary:MFS
  ...uage/Dictionary:maximum_flooding_surface_(MFS)|<b>''M''</b>''aximum'' <b>''F''</b>''looding'' <b>''S''</b>''urface'']] (q.v.).
  242 bytes (32 words) - 21:36, 7 May 2017
• Dictionary:Migration (seismic)
  ...inuation'']], [[Special:MyLanguage/Dictionary:Stolt_migration|''Stolt'' (''f-k'') ''migration'']], &#x03C4;-''p'' ''migration'', [[Special:MyLanguage/Di
  3 KB (466 words) - 14:37, 30 November 2018
• Dictionary:Moveout scan
  ...d successively in making an [[Special:MyLanguage/Dictionary:f-k_analysis|''f-k'' ''analysis'']] (q.v.).
  559 bytes (71 words) - 21:30, 21 February 2017
• Dictionary:MTBF
  <b>M</b>ean <b>T</b>ime <b>B</b>etween <b>F</b>ailures.
  156 bytes (27 words) - 21:47, 21 February 2017
• Dictionary:Multiple branches
  The situation where ''f''(&#x03B1;) has more than one possible value for the same value of &#x03B1;
  384 bytes (56 words) - 20:50, 19 February 2017
• Dictionary:Newtonian interpolation
  ...=''f''(''x''_''o''+''nh''), the value at ''y''_''u''=''f''(''x''_''o''+''uh'') can be approximated by a series for which t
  698 bytes (109 words) - 18:25, 8 March 2018
• Dictionary:Newton-Raphson technique
  ...''f''(''z''_''i'')/''f''&#x2032;(''z''_''i''), where ''f''&#x2032; is the first derivative with respect to ''z''. Where the process
  580 bytes (87 words) - 18:24, 8 March 2018
• Dictionary:NFS
  <b>N</b>etwork <b>F</b>ile <b>S</b>ystem.
  141 bytes (23 words) - 18:22, 8 March 2018
• Dictionary:Nomogram
  ...uage/Dictionary:Fig_A-7|A-7]] and [[Special:MyLanguage/Dictionary:Fig_F-26|F-26]].
  407 bytes (58 words) - 18:03, 18 March 2018
• Dictionary:Normal equations
  A digitized input ''x''_''t'' passed through the filter ''f''_''t'' yields the actual output ''y''_''t'' which in a
  957 bytes (144 words) - 17:51, 14 January 2018
• Dictionary:Normal fault
  ...onary:fault|''fault'']] and Figure [[Special:MyLanguage/Dictionary:Fig_F-3|F-3]].
  261 bytes (29 words) - 01:24, 8 December 2017
• Dictionary:NSF
  <b>N</b>ational <b>S</b>cience <b>F</b>ountation, an organization funded by the United States government to sup
  237 bytes (35 words) - 21:28, 31 October 2017
• Time slices
  ...apirism. Bone <ref name=ch07r13>Bone et al. (1975), Bone, M. R., Giles, B. F., and Tegland, E. R., 1975, Analysis of seismic data using horizontal cross
  6 KB (965 words) - 11:42, 1 October 2014
• Dictionary:Odd function
  <center><math>F(x)=-F(-x)</math>.</center>
  383 bytes (54 words) - 21:32, 27 October 2017
• Dictionary:Omega-x domain
  &#x03C9;,''x''=2&#x03C0;''f'',''x''. see ''fx'' ''domain''.
  183 bytes (23 words) - 16:30, 30 July 2018
• Dictionary:One-sided function
  ...ction whose value is zero for all negative values of the argument, i.e., ''F''(''x'')=0 if ''x''&#x003C;0 (or alternatively, zeros for all positive argu
  424 bytes (64 words) - 16:31, 30 July 2018
• Dictionary:Ormsby filter
  ...f''₃ to ''f''₄, and flat from ''f''₂ to ''f''₃.
  482 bytes (75 words) - 10:06, 13 November 2017
• Dictionary:OSF
  <b>O</b>pen <b>S</b>oftware <b>F</b>oundation.
  146 bytes (23 words) - 14:40, 13 November 2017
• Dictionary:Φ
  (f&#x012B; or f&#x0113;) Greek phi; capital, &#x03A6;. <b>1</b>. Symbol for porosity, also
  295 bytes (44 words) - 09:43, 22 August 2020
• Dictionary:Padding with zeros
  ...o make the fundamental period larger. Adding extra zero traces before an ''F,k'' or ''p'',&#x03C4; transform to prevent [[Special:MyLanguage/Dictionary:
  382 bytes (52 words) - 23:15, 1 November 2017
• Dictionary:Parseval’s theorem
  [[File:Segf22.jpg|thumb|400px|FIG. F-22. <b>Fourier transform theorems.</b>]] ...ective Fourier transforms ''H''₁(''f'') and ''H''₂(''f''),
  1 KB (158 words) - 17:44, 12 August 2020
• Dictionary:Period (T)
  <center><math>T=\frac{1}{f}=\frac{\lambda}{V}=\frac{2\pi}{\omega}</math></center> where ''f''=frequency, <math>\lambda</math>=wavelength, and ''V''=phase velocity. See
  802 bytes (111 words) - 21:15, 14 April 2019
• Dictionary:PFE
  ...uage/Dictionary:percent_frequency_effect_(PFE)|<b>''P''</b>''ercent'' <b>''F''</b>''requency'' <b>''E''</b>''ffect'']] (q.v.).
  242 bytes (32 words) - 13:59, 8 March 2018
• Dictionary:PFN
  <b>P</b>rompt <b>F</b>ission <b>N</b>eutron log.
  148 bytes (24 words) - 14:11, 8 March 2018
• Dictionary:Phase characteristics
  ...ther mixed-phase wavelets can also be made from these component doublets. (f) ''Z''-plane plot of the roots of the autocorrelation function for the fore
  3 KB (529 words) - 11:55, 9 March 2018
• Dictionary:Phase shift
  ...equivalent to a time shift of <math> \frac {\phi}{2 \pi f}</math>, where ''f''=frequency of the respective component being shifted. Phase shifts result
  489 bytes (73 words) - 19:19, 12 March 2018
• Dictionary:Phi (Φ) units
  (f&#x0113; o fi) A particle scale of size; <math>\phi = - {\log}_2 S</math>, w
  306 bytes (46 words) - 10:58, 16 March 2020
• Dictionary:Phi (Φ) units/en
  (f&#x0113; o fi) A particle scale of size; <math>\phi = - {\log}_2 S</math>, w
  246 bytes (40 words) - 10:58, 16 March 2020
• Dictionary:Plane wave
  <center><math>f(lx+my+nz\pm Vt)</math></center>
  573 bytes (90 words) - 13:51, 17 February 2019
• Dictionary:Polar anisotropy
  ...B4;; in this case ''V''_NMO&#x003C;''V''_vertical; <b>(f)</b> wavefront for tilted symmetry axis; <b>(g)</b> wave equations for tran
  4 KB (595 words) - 12:30, 21 September 2020
• Dictionary:Polarization resistance
  ..., ''T'' the absolute temperature, ''n'' the number of molar equivalents, ''F'' the Faraday, and ''J''_''o'' the exchange current density, all
  639 bytes (89 words) - 21:32, 19 April 2019
• Dictionary:Polygon
  ...treatment, such as a portion of a gather to be muted or a portion of an ''f''&#x2013;''k'' section to be muted. <b>2</b>. Representation of a fault sur
  399 bytes (63 words) - 12:51, 8 May 2019
• Dictionary:Power spectrum
  ...A power-density versus frequency relationship. The power spectrum ''P''(''f'') is the square of the amplitude-frequency response or the Fourier (cosine ...'P'' ' (''f''), where ''P''(''f'') is the power density at the frequency ''f'':
  614 bytes (86 words) - 13:13, 29 March 2019
• Dictionary:Principal value
  If ''x''_''s'' is a singular point of ''f''(''x'') and <math> a < x_s < b </math>, then the principal value is ...lon \to x} \{ \int_a^{x_s -\varepsilon} f(x) dx + \int_{x_s+\varepsilon}^b f(x) dx \} </math>.</center>
  413 bytes (71 words) - 16:53, 14 March 2019
• Dictionary:Probability functions, F(x)
  {{#category_index:P|probability functions, ''F''(''x'')}}
  193 bytes (22 words) - 11:00, 16 March 2020
• Dictionary:Programmer
  ...ng, (e) ability to restart in case of interruptions and error conditions, (f) automatic monitoring to ascertain that devices and the computing are opera
  997 bytes (142 words) - 07:47, 13 July 2018
• Dictionary:Proton-precession magnetometer
  ...lei precess about the Earth&#x2019;s magnetic field ''H'' at a frequency ''f''_''L'' (<b>Larmor frequency</b>), ...;s magnetic field. For the normal Earth field of about 50 000 nanotesla, ''f''_''L''=2100 Hz. As the protons gradually relax into random orien
  1 KB (181 words) - 21:20, 27 January 2018
• Dictionary:Q(Quality)
  ...\alpha \lambda}{\pi} = \frac{hT}{\pi} = \frac{\delta}{\pi} = \frac{2\Delta f}{f_\mathrm{r}} </math></center> where ''V'', ''f'', ''&lambda;'', and ''T'' are, respectively, velocity, frequency, waveleng
  3 KB (497 words) - 11:00, 29 November 2020
• Dictionary:Radian frequency
  &#x03C9;&#x03BA;, compared to <b>angular frequency</b>, &#x03C9;=2&#x03C0;''f''=2&#x03C0;/''T''.
  222 bytes (31 words) - 16:53, 22 January 2018
• Dictionary:Rayleigh distribution
  <math> f(x) = (x/{\alpha}) e^{-x^2/\alpha}, x \geq 0, \alpha > 0,</math>
  607 bytes (83 words) - 23:42, 10 January 2018
• Dictionary:Rayleigh wavelet
  <center><math>f(t)=\left( \frac{1}{\pi} \right) \left(\frac{\varepsilon}{t^2+\varepsilon^2}
  649 bytes (81 words) - 13:06, 8 May 2017
• Dictionary:Remanent magnetism
  ...except for the effect of lightning currents in exposed surface rocks. (<b>f</b>) <b>Pressure</b> (or <b>piezo</b>) <b>remanent magnetization</b> (<b>PR
  2 KB (253 words) - 01:25, 11 June 2017
• Dictionary:Reverse fault
  ...onary:fault|''fault'']] and Figure [[Special:MyLanguage/Dictionary:Fig_F-3|F-3]].
  234 bytes (27 words) - 16:09, 27 July 2017
• Dictionary:RF
  ...ecial:MyLanguage/Dictionary:radio_frequency_(RF)|<b>''R''</b>''adio'' <b>''F''</b>''requency'']] (q.v.).
  207 bytes (27 words) - 17:02, 1 September 2017
• Dictionary:RFC
  <b>1</b>. <b>R</b>equest <b>F</b>or <b>C</b>omments. <b>2</b>. <b>R</b>e<b>F</b>lection <b>C</b>oefficient.
  207 bytes (39 words) - 17:02, 1 September 2017
• Dictionary:RFP
  <b>R</b>equest <b>F</b>or <b>P</b>roposal; an invitation to submit a request for funding, usual
  226 bytes (37 words) - 17:02, 1 September 2017
• Dictionary:RFT
  <b>R</b>epeat <b>F</b>ormation <b>T</b>ester: The primary method of recovering fluid pressures
  365 bytes (54 words) - 17:02, 1 September 2017
• Dictionary:Ricker wavelet
  The amplitude ''f(t)'' of the Ricker wavelet with peak frequency ''f<sub>M'' at time ''t'' is given by, :<math>f(t) = (1-2 \pi^2 f_{_{M}}^2 t^2) e^{-\pi^2 f_{_{M}}^2 t^2}</math>.
  2 KB (289 words) - 23:58, 18 January 2020
• Dictionary:Riemann surface
  ...i-valued functions are single-valued on each Riemann surface. Named for G. F. B. Riemann (1826&#x2013;1866), German mathematician.
  338 bytes (46 words) - 17:06, 1 September 2017
• Dictionary:Right lateral fault
  ...the right (clockwise). See Figure [[Special:MyLanguage/Dictionary:Fig_F-3|F-3]].
  257 bytes (34 words) - 14:45, 8 August 2017
• Dictionary:Root
  <b>1</b>. A value of ''x'' that satisfies the equation ''F''(''x'')=0. <b>2</b>. Relatively light crustal material projecting down int
  391 bytes (51 words) - 14:50, 8 August 2017
• Dictionary:Rossi-Forel intensity scale
  ...19;) A scale of earthquake intensity devised in 1878 by M. S. de Rossi and F. A. Forel. Compare [[Special:MyLanguage/Dictionary:Mercalli_scale|''Mercall
  331 bytes (45 words) - 07:14, 12 April 2019
• Dictionary:Scissors fault
  ...iderably with location. See Figure [[Special:MyLanguage/Dictionary:Fig_F-3|F-3]].
  271 bytes (35 words) - 11:40, 3 November 2017
• Dictionary:SEG/EAGE 3-D models
  ...irst2=N.|last3=Kunz|first3=T.|last4=Nicoletis|first4=L.|last5=Rocca|first5=F.|title=3-D Modeling Project: 3rd report|journal=The Leading Edge|volume=14|
  2 KB (257 words) - 12:00, 18 April 2018
• Dictionary:Separation
  ...isplacement on a fault. See Figure [[Special:MyLanguage/Dictionary:Fig_F-2|F-2]]. <b>4</b>. Displacement between source and receiver.
  981 bytes (128 words) - 14:15, 22 September 2017
• Dictionary:SFL
  ...e/Dictionary:spherically_focused_log_(SFL)|<b>''S''</b>''pherically'' <b>''F''</b>''ocused'' <b>''L''</b>''og'']].
  274 bytes (34 words) - 01:17, 17 August 2018
• Dictionary:Similar fold
  ...:folding|''folding'']] and Figure [[Special:MyLanguage/Dictionary:Fig_F-17|F-17]]e.
  240 bytes (28 words) - 12:07, 1 June 2017
• Dictionary:Sinistral
  ...site to <b>dextral</b>. See Figure [[Special:MyLanguage/Dictionary:Fig_F-3|F-3]]. From the Latin for &#x2018;&#x2018;left.&#x2019;&#x2019;
  414 bytes (59 words) - 09:00, 21 June 2017
• Dictionary:Skin depth
  ...>\text{skin depth}=\delta=\sqrt{\frac{2}{\sigma\mu\omega}}=503\sqrt{\sigma f}</math>,</center> ...ries/meter, <math>\omega</math>=angular frequency in radians/second, and ''f''=frequency. Also called <b>effective depth</b>.
  771 bytes (109 words) - 10:48, 11 June 2020
• Dictionary:Slip-vector analysis
  ...], Fowler (1990, 101), and Figure [[Special:MyLanguage/Dictionary:Fig_F-10|F-10]].
  429 bytes (55 words) - 09:51, 1 February 2018
• Dictionary:SOFAR
  ...s. There is no channel north of 55&#x00B0;N. Named for the <b>SO</b>und <b>F</b>ixing <b>A</b>nd <b>R</b>anging system used for locating aviators downed
  1 KB (209 words) - 21:45, 19 June 2017
• Dictionary:Space-time filter
  ...y_filtering|''apparent-velocity filter'']] (q.v.) or frequency-wavenumber (f,k) filter. Also called <b>beam pointing</b>.
  299 bytes (34 words) - 16:16, 13 April 2019
• Dictionary:Spherical wave
  <center><math>\frac{1}{r}f\left(r\pm Vt\right)</math>,</center>
  430 bytes (63 words) - 09:58, 6 September 2017
• Dictionary:Spread
  ...T</b> if the source is at ''E'', <b>broadside L</b> if the source is at ''F'', and <b>cross</b> if some geophones are at right angles (''G''&#x0020;''t ...y:Fig_S-18|S-18]]. See also Figure [[Special:MyLanguage/Dictionary:Fig_F-1|F-1]] for fan shooting and Figure [[Special:MyLanguage/Dictionary:Fig_T-4|T-4
  2 KB (407 words) - 08:48, 25 June 2018
• Dictionary:Stadia tables
  ...&#x03B1; is the angle which the line of sight makes with the horizontal, ''F'' is the stadia interval factor (often 100), and ''X'' is the distance on t
  680 bytes (111 words) - 05:26, 29 January 2018
• Dictionary:Standard temperature
  ...basic measurement, often 0&#x00B0;C. The petroleum industry uses 60&#x00B0;F (15.5&#x00B0;C) as its standard temperature for measurement of oil volumes.
  320 bytes (44 words) - 03:37, 28 October 2017
• Dictionary:Stolt migration
  (st&#x014D;lt) A migration method in the ''f,k'' domain assuming constant velocity. Vertical stretching before Fourier t
  333 bytes (43 words) - 14:19, 16 October 2017
• Dictionary:Strike-slip fault
  ...edominantly horizontal. See Figure [[Special:MyLanguage/Dictionary:Fig_F-3|F-3]].
  247 bytes (30 words) - 10:46, 4 June 2018
• Dictionary:Guide to Pronunciation
  f as in '''f'''it, di'''ff'''er i as in '''i'''f, b'''i'''t
  1 KB (202 words) - 15:48, 20 December 2011
• Dictionary:Reference Tables and Figures
  <tr><td>[[Dictionary:Fig_F-3|Fault types (F-3)]]</td><td align="right">132</td></tr> <tr><td>[[Dictionary:Fig_F-8|Filtering types (F-8)]]</td><td align="right">138</td></tr>
  9 KB (1,280 words) - 15:48, 20 December 2011
• Dictionary:SURF diagram
  A <b>S</b>hallow <b>U</b>nderground <b>R</b>eflection <b>F</b>easibility diagram that shows the shallowest possible depth of seismic o
  319 bytes (50 words) - 10:13, 13 October 2017
• Dictionary:Appendices
  [[Media:Append_f.pdf|Appendix F: Map and Rock Symbols]]
  682 bytes (106 words) - 15:48, 20 December 2011
• Dictionary:Sykes diagram
  ...balls&#x2019;&#x2019; (see Figure [[Special:MyLanguage/Dictionary:Fig_F-10|F-10]]) that indicate the type of faulting involved in earthquakes.
  274 bytes (35 words) - 08:32, 18 October 2017
• Dictionary:References
  Aminzadeh, F., Burkhard, N., Kunz, T., Nicoletis, L., and Rocca, F., 1995, 3-D modeling project: 3rd report: The Balch, A. H. and Smolka, F. R., 1970, Plane and spherical Voigt waves: Geophysics, 35, 745&ndash;761.<
  40 KB (5,282 words) - 17:45, 23 February 2016
• Dictionary:Tau-p mapping (τ-p)
  ...tance (offset) and ''t''=arrival time. <b>(b)</b> Its tau-p transform is ''F''(&#x03C4;,''p'') where ''p''=''dt''/''dx''=1/''V''_''a'' and &#x
  2 KB (282 words) - 09:50, 22 August 2020
• Dictionary:Taylor series
  For an <math> N</math> times differentiable function <math> f(x)</math> and for <math> x</math> and <math> a </math> in an open <center> <math> f(x) = \sum_{n=0}^{N-1} \frac{f^{(n)}(a)}{n!} (x - a)^n + R_N</math> </center>
  7 KB (1,252 words) - 09:27, 20 June 2017
• Dictionary:Tear fault
  ...e of strike-slip fault; see Figure [[Special:MyLanguage/Dictionary:Fig_F-4|F-4]].
  206 bytes (26 words) - 17:08, 10 August 2018
• Dictionary:Tensor gradient
  ...change in the ''j'' direction of the gradient in the ''i'' direction is ''F_ij''.
  621 bytes (96 words) - 16:34, 10 May 2017
• Dictionary:Throw
  ...unit (bed) by a fault. See Figure [[Special:MyLanguage/Dictionary:Fig_F-2|F-2]].
  242 bytes (33 words) - 14:19, 26 August 2017
• Dictionary:Thrust fault
  ...guage/Dictionary:Fig_F-3|F-3]] and [[Special:MyLanguage/Dictionary:Fig_F-4|F-4]].
  352 bytes (49 words) - 14:17, 26 August 2017

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