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f An automater ray method for diffraction modelling in complex media
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 54th EAEG Meeting, Jun 1992, cp-45-00235
- ISBN: 978-90-73781-04-7
Abstract
Certain problems of modern seismic data processing (e.g ., some aspects of tomographic inversion and prestack migration) require (1) the handling of complex velocity models and (2) calculations for a high density of shotpoints and geophones. Therefore, we require fast algorithms giving basic wavefield information (traveltimes, dip, curvature, amplitudes). Ray-tracing is one such method, which can also investigate individual arrivals from particular parts of a model in contrast to more complete solutions of the wave equation, such as the finite difference method .