Parallel computing in prestack viscoacoustic pseudospectral modeling

How Wei Chen, Yan Cheun Wang

Research output: Contribution to conferencePaperpeer-review

Abstract

A parallel computing of viscoacoustic numerical modeling algorithm is developed, tested and implemented for two-dimensional media. The loss mechanism is simulated according to a standard linear solid model. Numerical solution of viscoacoustic responses is obtained by solving two-dimensional heterogeneous viscoacoustic wave equations. The model is parameterized through stress, strain relaxation times, density, relaxed and unrelaxed modulus, and velocity. On constructing P- and S- velocity, Qp, and Qs models separately, attenuated and de-coupled propagating P- and S- wave fields are synthesized. Implementation of a pseudospectral technique with staggered grid provides a more general and more accurate description of wave propagation phenomena. A near perfect linear speedup can be achieved on a distributed-memory multiple-processor system. The algorithm allows several nodes to be used to solve a single large problem at high computation to communication ratios.

Original languageEnglish
Pages1289-1292
Number of pages4
DOIs
StatePublished - 1995
Event1995 Society of Exploration Geophysicists Annual Meeting, SEG 1995 - Houston, United States
Duration: 8 Oct 199513 Oct 1995

Conference

Conference1995 Society of Exploration Geophysicists Annual Meeting, SEG 1995
Country/TerritoryUnited States
CityHouston
Period8/10/9513/10/95

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