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  • {{lowercase}}{{#category_index:A|acoustic impedance}} ...ction coefficients'']] (q.v.) at normal incidence, that is, seismic P-wave velocity multiplied by density. Because reflection coefficients change with angle, t
    509 bytes (66 words) - 19:28, 28 September 2016
  • {{#category_index:A|acoustic log}} ...or S-waves between receivers at different distances (sonic log, continuous-velocity log), measurement of the amplitude of part of the wavetrain (amplitude log)
    692 bytes (92 words) - 11:19, 8 December 2017
  • {{#category_index:A|acoustic velocity log}}
    196 bytes (23 words) - 11:21, 8 December 2017
  • {{#category_index:A|acoustic wave}} ...e sonic log measures the slowness (specific transit time or inverse of its velocity). An S-wave traveling in the formation is sometimes a second arrival, but s
    1 KB (182 words) - 20:08, 6 June 2020
  • Acoustic-velocity log or [[Special:MyLanguage/Dictionary:sonic_log|''sonic log'']] (q.v.). Dr
    223 bytes (26 words) - 11:22, 8 December 2017
  • ...n determining [[Special:MyLanguage/Dictionary:stacking_velocity|''stacking velocity'']] (q.v.), AVO ([[Special:MyLanguage/Dictionary:amplitude_variation_with_a ...ex-trace_analysis|''complex-trace analysis'']]) and acoustic impedance (or velocity) determined by [[Special:MyLanguage/Dictionary:inversion|''inversion'']] (q
    7 KB (961 words) - 15:01, 6 February 2018
  • ...se downward by matching the effective detonation velocity to the formation velocity. Its physical dimensions must be an appreciable fraction of a seismic wavel
    550 bytes (76 words) - 16:24, 8 April 2019
  • '''2'''. Acoustic impedance, the product of density and velocity, the ratio of the pressure to the volume displacement at a given surface in
    2 KB (326 words) - 15:44, 7 March 2017
  • {{#category_index:I|instantaneous velocity section}} ...Special:MyLanguage/Dictionary:synthetic_acoustic_impedance_log|''synthetic acoustic impedance log'']].
    308 bytes (32 words) - 12:18, 11 April 2019
  • ...rements. <b>2</b>. Often, specifically, calculating acoustic impedance (or velocity) from a seismic trace, taken as representing the earth&#x2019;s reflectivit
    1 KB (178 words) - 21:37, 7 February 2017
  • ...s and 200 m/s over one cable length, respectively. Figure 9.1-1b shows the velocity-depth model with the color bar on the right-hand margin. ...s: (a) the interval velocity profiles for the six horizons H1-H6; (b) true velocity-depth model created from the profiles in (a).
    4 KB (571 words) - 11:22, 2 October 2014
  • .... Note that raypath bending depends on changes in velocity, not changes in acoustic impedance. Raypaths are usually shown on wavefront charts; see Figure [[Spe
    968 bytes (137 words) - 23:17, 1 March 2018
  • ...13;20&#x00B0;, the lee slopes at the angle of repose, 30&#x00B0;. Acoustic velocity increases downward within the dune because of compaction.
    339 bytes (51 words) - 15:14, 3 May 2017
  • ...tinuity in elastic properties and/or density where seismic velocity and/or acoustic impedance changes abruptly. <b>2</b>. Specifically, the <b>Moho discontinui
    490 bytes (69 words) - 12:04, 18 April 2018
  • ...aves reflected from acoustic-impedance contrasts or refracted through high-velocity members. See ''passive seismic survey, reflection survey, refraction survey
    460 bytes (57 words) - 11:46, 29 April 2017
  • ...-wave velocity. Also called <b>acoustic-velocity log</b> and <b>continuous-velocity log</b>. Usually measured with frequencies 1 to 50 kHz. Used for porosity d
    1 KB (161 words) - 11:52, 25 September 2017
  • {{#category_index:S|synthetic acoustic impedance log}} ...ved by inversion of seismic data and additional constraints; for synthetic velocity or slowness logs, additional density data are required. The vertical scale
    630 bytes (91 words) - 11:53, 25 September 2017
  • Alkhalifah, T. and Tsvankin, I., 1995, Velocity analysis for transversely isotropic media: Geophysics, 60, Clayton, R. W. and Stolt, R. H., 1981, A Born WKBJ inversion method for acoustic reflection data: Geophysics,
    40 KB (5,282 words) - 17:45, 23 February 2016
  • ...Special:MyLanguage/Dictionary:synthetic_acoustic_impedance_log|''synthetic acoustic-impedance log'']] (q.v.) or synthetic sonic log.
    333 bytes (41 words) - 17:52, 31 May 2017
  • ...ation frequency depends on the traveltime and hence on the velocity of the acoustic wave. This technique is sometimes called <b>sing around. 2</b>. A device wh
    689 bytes (98 words) - 04:02, 7 June 2017

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