Journal of Applied Geophysics 42 Ž1999. 229–242 www.elsevier.nlrlocaterjappgeo Multifocusing homeomorphic imaging Part 1. Basic concepts and formulas a,),1 Boris Gelchinsky , Alexander Berkovitch a , Shmariahu Keydar b a Tel-AÕiÕ UniÕersity, Department of...
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Journal of Applied Geophysics 42 Ž1999. 229–242 www.elsevier.nlrlocaterjappgeo Multifocusing homeomorphic imaging Part 1. Basic concepts and formulas a,),1 Boris Gelchinsky , Alexander Berkovitch a , Shmariahu Keydar b a Tel-AÕiÕ UniÕersity, Department of Geophysics and Planetary Sciences, Ramat AÕiÕ Tel-AÕiÕ 69978, Israel b The Geophysical Institute of Israel, Baal Shem ToÕ str 6, Liad, Israel Abstract The decomposition of a total wave field recorded on a set of seismic traces on parts corresponding to different body waves is one of the fundamental problems of data processing. The central point of this problem is the correlation procedure for a seismic event Žwave. on a set of recorded traces. In order to implement this procedure, it is necessary to have a local time correction formula for a family of source–receiver pairs arbitrarily distributed around a chosen central pair. This formula is derived in the work for a 2D seismic medium of arbitrary structure using a new homeomorphic im
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