Green's function retrieval by cross-correlation in case of one-sided illumination

Details Green's function retrieval by cross-correlation in case of one-sided illumination Green's function retrieval by cross-correlation in case of one-sided illumination

Oct 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3319304w&link_type=abstract

Geophysical Research Letters, Volume 33, Issue 19, CiteID L19304

Physics

Geophysics

25

Exploration Geophysics: Seismic Methods (3025, 7294), Seismology: Body Waves, Seismology: Surface Waves And Free Oscillations

Scientific paper

The cross-correlation of acoustic wave fields at two receivers yields the exact Green's function between these receivers, provided the receivers are surrounded by sources on a closed surface. In most practical situations the sources are located on an open surface and as a consequence the illumination of the receivers is one-sided. In this Letter we discuss the conditions for accurate Green's function retrieval for the situation of one-sided illumination. It appears that the Green's function retrieval method benefits from the fact that the earth is inhomogeneous, without relying on assumptions about disorder.

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