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Detailed Reference Information |
Wang, Y. and Guo, J. (2004). Seismic migration with inverse Q filtering. Geophysical Research Letters 31: doi: 10.1029/2004GL020525. issn: 0094-8276. |
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Taking account the earth Q effect (i.e., frequency-dependent amplitude decay and velocity dispersion) during seismic migration simultaneously, the resultant seismic image is expected to be high resolution with true amplitude and correct timing. We present here a stabilized algorithm for such a migration incorporating inverse Q filtering scheme, so that the imaging technique is applicable to seismographs with long recording time. The earth model is assumed to be 1-D with continuous variations vertically in velocity and attenuation, and the imaging algorithm is implemented easily and efficiently in the frequency-wavenumber domain. Although such a 1-D model suits mostly to the cases in lithospheric-scale regional geophysics, it is sometimes also suitable to the exploration seismic studies. The method is demonstrated using a real data example from exploration seismics with an attempt to recover a target reflection underneath a group of strong coal-seam reflections. |
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Abstract |
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Keywords
Exploration Geophysics, Computational methods, seismic, Exploration Geophysics, Data processing, Exploration Geophysics, Seismic methods, Mathematical Geophysics, Inverse theory, Physical Properties of Rocks, Wave attenuation |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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