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  • {{#category_index:A|amplitude variation with angle/offset (AVA/AVO)}} ...sin<sup>2</sup>''x''), where ''&theta;'' is incidence angle (and ''x'' is offset), and the slope (gradient) of a best-fit line is measured as the indicator:
    3 KB (400 words) - 08:40, 19 March 2018
  • ...ude_variation_with_angle/offset_(AVA/AVO)|''amplitude-variation-with-angle/offset'']].
    582 bytes (78 words) - 19:42, 3 January 2018
  • ...nverted waves become more prominent as the angle of incidence (and usually offset) increases. ...physics)|reflection]] and (3) [[Special:MyLanguage/Amplitude versus offset|amplitude variations]].
    3 KB (419 words) - 10:37, 13 November 2017
  • ...amplitude_variation_with_angle/offset_(AVA/AVO)|''amplitude-variation-with-offset'']] (q.v.) studies.
    372 bytes (50 words) - 11:18, 16 February 2017
  • Allen, J. L. and Peddy, C. P., 1993, Amplitude variation with offset Gulf Coast case studies: Soc. Expl. Geophys.</li> Bolondi, G., Loinger, E., and Rocca, F., 1982, Offset continuation of seismic sections: Geophys. Prosp., 30,
    40 KB (5,282 words) - 16:45, 23 February 2016
  • ...lso known as [[Special:MyLanguage/amplitude versus offset|amplitude versus offset]] analysis - which is a helpful technique in the detection of [[Special:MyL ...by assuming that the angle of incidence is less than 30 degrees (i.e. the offset is relatively small), so the third term will tend to zero. This is the cas
    9 KB (1,355 words) - 05:08, 22 October 2017
  • ...components of which the former is a direct measure of the relative seismic amplitude within a frequency band <ref name="Chopra07">Chopra, S., & Marfurt, K. J. ( ...Marfurt, Zhonghong Wan, and Yi Guo (2013) Spectral decomposition of time- versus depth-migrated data. SEG Technical Program Expanded Abstracts 2013: pp. 138
    15 KB (2,230 words) - 13:58, 12 February 2019
  • ...ical Development Corporation. Here Fred has exploited the amplitude-versus-offset (AVO) relationships between seismic data, well logs, petrophysics and the r ...lifting it to the status of industrial giant in the field of AVO and other amplitude-related exploration and development applications.
    12 KB (1,764 words) - 13:33, 17 October 2016
  • * 2018 “Three-term amplitude-variation-with-offset projections,” [[Vaughn Ball]], [[Luis Tenorio]], [[Christian Schiøtt]], ....org/iPage?doi=10.1190%2F1.3511353 ''Focused-source electromagnetic survey versus standard CSEM: 3D modeling in complex geometries,''] [[Sofia Davydycheva]],
    23 KB (2,964 words) - 00:55, 29 September 2019
  • ...ictionary:Amplitude variation with angle/offset (AVA/AVO)|amplitude-versus-offset methods]]. ...more general works on wave propagation and his studies on range-dependent amplitude attributes in layered media. He has a classical paper on this topic that go
    5 KB (740 words) - 07:00, 17 February 2018
  • the subjects of wave propagation and amplitude preserving seismic imaging algorithms, and ...ation, or migration inversion. This pioneering research initially involved amplitude-preserving Kirchhoff migration that Norm and others later extended to Gauss
    12 KB (1,840 words) - 17:38, 4 November 2014
  • * 1995 "Accurate migration using offset-checkshot surveys," [[Jerome R. Krebs]], [[Daniel R. Fara]], and [[Allen E. * 1994 "Effect of strain amplitude and frequency on compressional and shear wave velocities and amplitudes in
    9 KB (1,146 words) - 00:26, 29 September 2019
  • ...d inverse scattering in disordered media and composite materials, (2) true-amplitude imaging, migration and inversion, (3) seismic and acoustic methods for poro ...oject focuses on adapting seismic-imaging methods to multicomponent global-offset data, for the purpose of addressing seismic-imaging challenges such as macr
    30 KB (4,115 words) - 09:56, 12 May 2014
  • ...ing along the velocity axis. This is caused by discrete sampling along the offset axis and finite cable length. The operator '''L<sup>T</sup>''' alone does n ...geometry of the layer boundaries and faults. Whereas, we broadly associate amplitude inversion with the estimation of a stratigraphic model of the reservoir tha
    15 KB (2,329 words) - 12:59, 17 September 2014
  • ...d is not only a function of time, but also a function of a space variable (offset or midpoint axis). The Fourier dual for the space variable is defined as '' ...from 0 to 15 ms/trace. Trace spacing is 25 m. Bottom row: Their respective amplitude spectra. The dots on the spectra represent the mapping of events on the gat
    7 KB (1,055 words) - 13:02, 17 September 2014
  • ...'. Using the Pythagorean theorem, the traveltime equation as a function of offset is where ''x'' is the distance (offset) between the source and receiver positions, ''v'' is the velocity of the me
    8 KB (1,237 words) - 09:04, 18 September 2014
  • ...ency and semblance along the hyperbolic trajectories governed by velocity, offset, and traveltime. ...nge of 1000 to 5000 m/s, and the vertical axis represents the two-way zero-offset time from 0 to 8 s. Red indicates the maximum coherency measure. The curve
    17 KB (2,586 words) - 13:06, 16 June 2017
  • ...Traveltime curve for a flat reflector is a hyperbola with its apex at zero-offset trace. ...ationNote|2a}}) involves mapping nonzero-offset traveltime ''t'' onto zero-offset traveltime ''t''<sub>0</sub>. (a) Before and (b) after NMO correction.
    8 KB (1,193 words) - 16:35, 7 October 2014
  • ...w times. For example, a waveform with a 30-Hz dominant frequency at 2000-m offset and ''t''<sub>0</sub> = 0.25 s shifts to nearly 10 Hz after NMO correction. ...able 3-1.''' NMO correction as a function of offset ''x'' and two-way zero-offset time ''t''<sub>0</sub> for a given velocity function ''v<sub>NMO</sub>''.
    8 KB (1,241 words) - 16:36, 7 October 2014
  • ...y time domain (Figure 3.2-9a) to the stacking velocity versus two-way zero-offset time domain (Figure 3.2-9b). ...-cable length on the velocity-spectrum is to transform the CMP gather from offset to velocity domain by way of discrete Radon transform ([[the radon transfor
    4 KB (623 words) - 13:27, 18 September 2014

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