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Optimum XY-Distance or Optimum Migration Velocity
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 57th EAGE Conference and Exhibition, May 1995, cp-90-00181
- ISBN: 978-90-73781-06-1
Abstract
Today the GRM is probablely the most widely used interpretation method in refraction seismology. The GRM is based on the Plus-Minus-method but, by introducing a XY-distance, the weakness of the Plus- Minis-method especially regarding the velocity determination is overcome. Conceptually the XY-distance corresponds to the critical offset of the refracted ray (Palmer, 1980).