P196 MIGRATION OF INCOMPLETE WALK-AWAY VSP DATA MAXIM. JU. SMIRNOV and GREGORY V. KUZMISCHEV. United Institute of Geology Geophysics and Mineralogy Siberian Branch Russian Academy of Science 3 Koptuga prospect 630090 Novosibirsk Russia 1 Summary. The approach to migration of walk-away VSP data is considered in the paper. Walk-away VSP data frequently contains a limited number of sources. Therefore very strong migration artifacts will appear when using the common migration procedure for such data. This method allows to reduce influence of the artifacts on migration images using a priori information about subsurface structure. The method has been successfully tested on


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