Efficient Methods to Simulate Planar Free Surface in the 3D 4th-Order Staggered-Grid Finite-Difference Schemes

被引：0
|
作者：
Jozef Kristek
Peter Moczo
Ralph J. Archuleta
机构：
[1] Slovak Academy of Sciences,Geophysical Institute
[2] University of California,Institute for Crustal Studies
来源：
Studia Geophysica et Geodaetica | 2002年 / 46卷 / 2期
关键词：
Free Surface; Grid Spacing; Rayleigh Wave; Epicentral Distance; Stress Imaging;
D O I：
暂无
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学科分类号：
摘要：
We numerically tested accuracy of two formulations of Levander's (1988) stress-imaging technique for simulating a planar free surface in the 4th-order staggered-grid finite-difference schemes. We have found that both formulations (one with normal stress-tensor components at the surface, the other with shear stress-tensor components at the surface) require at least 10 grid spacings per minimum wavelength (λmin÷h = 10) if Rayleigh waves are to be propagated without significant grid dispersion in the range of epicentral distances up to 15λdomS.
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页码：355 / 381
页数：26
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    [J]. STUDIA GEOPHYSICA ET GEODAETICA, 2002, 46 (02) : 355 - 381
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