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f DMO in Cross-spread - The failure of existing software to handle amplitudes correctly
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 58th EAGE Conference and Exhibition, Jun 1996, cp-48-00144
- ISBN: 978-90-73781-07-8
Abstract
The cross-spread is the basic subset of the orthogonal geometry (Fig. 1). It is a single-fold 3D dataset which is suitable for DMA (Vermeer et al., 1995). The midpoints of the traces contributing to the DMO result in an output point lie on a hyperbola (Fig. 2). In a constant velocity medium, there is always a point on the hyperbola which has illuminated the footpoint of the zero-offset trace in the output point. This is the point of stationary phase for the output point, The other traces along the hyperbola either contribute to the zone of stationary phase or to the flanks of the DMQ panel.