Variable-Grid Numerical Simulation of Seismic Wave Propagation in Visco-Elastic Media
详细信息
- 责任者：Li Xiaobo (State Key Laboratory of Marine Geology ; Tongji University ; Shanghai 200092 ; China) ; Dong Liangguo
- 刊名：Geophysical Prospecting for Petroleum
- 出版年：2012
- 卷期：51(1)
- 关键词：弹性波 ; elastic waves ; 数值模拟 ; numerical simulation
- 页码：p.1-10
- 图表：12 illus., 3 tables, 24 refs.
- 分类号：1600
- 出版序号：20130480
- issnNo：ISSN1000-1441
- isbnNo：CN32-1284/TE
摘要
Starting from the constitutive equation of the Kelvin media, the viscoelastic and visco-acoustic wave equation were derived, and Staggered-Grid High Order Finite Difference solutions for viscoe lastic wave equation were established. Meanwhile, by applying variable spatial grid and locally variable time step, a high-efficiency and high-precision numerical simulation method were achieved for the propagation of elastic(acoustic) wave in viscoelastic media. The numerical simulation results indicate that the methods can effectively simulate the propagation of seismic wave in the viscoelastic media. Furthermore, the methods can accurately characterize the fine structure of the media and greatly improve the computation efficiency while preserving simulation precision.
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