Physics – Geophysics
Scientific paper
Oct 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28.3761m&link_type=abstract
Geophysical Research Letters, Volume 28, Issue 19, p. 3761-3764
Physics
Geophysics
3
Exploration Geophysics: Seismic Methods, Physical Properties Of Rocks, Physical Properties Of Rocks: Wave Attenuation, Seismology: Body Wave Propagation
Scientific paper
We applied a recently developed scattering attenuation theory to model Q-values measured at the German KTB site and found that scattering attenuation plays an important role in the upper crust in this area. This does not conform with previous studies that suggest absorption mechanisms as the main reason for the attenuation. The scattering attenuation model used is based on the wave propagation theory in random media and allows quantification of scattering attenuation in complex geological regions using simple statistical estimates from well-log data. For our estimates of scattering Q we used statistical models of heterogeneities obtained from KTB logs. A good agreement between the magnitude of scattering attenuation and the measured Q-values shows the necessity of evaluating the role of scattering in seismic attenuation phenomena.
Müller Tobias M.
Shapiro Serge A.
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