A Comparison of Strategies for Seismic Interferome

Authors: Roel Snieder Masatoshi Miyazawa Evert Slob Ivan Vasconcelos Kees Wapenaar

Publish Date: 2009/04/29

Volume: 30, Issue: 4-5, Pages: 503-523

PDF Link

Abstract

The extraction of the response from field fluctuations excited by random sources has received considerable attention in a variety of different fields We present three methods for the extraction of the systems response that are based on crosscorrelation deconvolution and the solution of an integral equation respectively For systems that are invariant for timereversal the correlation method requires random sources on a bounding surface only but when timereversal invariance is broken for example by attenuation a volume distribution of sources is needed For this reason the correlation method is not useful for diffusive or strongly attenuating systems We provide examples of the three methods and compare their merits and drawbacks We show that the extracted field may satisfy different boundary conditions than does the physical field This can be used for example to suppress surfacerelated multiples in exploration seismology to study the coupling of buildings to the subsurface and to remove the airwave in controlled source electromagnetics CSEM

Keywords: