Marchenko wavefield redatuming, imaging conditions, and the effect of model errors

Sjoerd De Ridder, Andrew Curtis, Joost Van Der Neut, Cornelis Wapenaar

Research output: Contribution to conferenceAbstractpeer-review

Abstract / Description of output

Recently, a novel method to redatum the wavefield in the sub-surface from a reflection response measured at the surface has gained interest for imaging primaries in the presence of strong internal multiples. A prerequisite for the algorithm is an accurate and correct estimate of the direct-wave Green's function. However, usually we use an estimate for the direct-wave Green's function computed in a background velocity medium. Here, we investigate the effect of amplitude and phase errors in that estimate. We formulate two novel imaging conditions based on double-focusing the measured reflection response inside the subsurface. These yield information on the amplitude error in the estimate for the direct-wave Green's function which we can then correct, but the phase error remains elusive.
Original languageEnglish
Publication statusPublished - 1 Sept 2016

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