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Pre-stack Sparse Least-squares Migration
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 70th EAGE Conference and Exhibition incorporating SPE EUROPEC 2008, Jun 2008, cp-40-00481
- ISBN: 978-90-73781-53-5
Abstract
We use least squares migration with a sparse prior to attenuate migration artifacts, and increase resolution. We invert for pre-stack migrated images in the shot-geophone domain, adding a sparse constraint to the LS system by applying a Cauchy norm to pre-stack common shot image gathers.