A Mesh Grading Technique for Near-fault Seismic Wave Propagation in Large Velocity-contrast Viscoelastic Earth Media
A Mesh Grading Technique for Near-fault Seismic Wave Propagation in Large Velocity-contrast Viscoelastic Earth Media
复制标题
大速度对比粘弹性地球介质中近断层地震波传播的网格分级技术
DOI:
10.1080/13632469.2020.1719240
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发表时间:
2020-02
影响因子:
2.6
通讯作者:
Tielin Liu
中科院分区:
文献类型:
--
作者:
Wei Zhong;Tielin Liu
Seismic ground motions at a site are greatly affected by nearby many factors, such as strong heterogeneity, irregular interface, topographic relief, and large attenuation. To consider such factors, a simple triangular mesh grading technique is proposed for the efficient simulation of viscoelastic wave bidirectional propagation at irregular interface of large velocity-contrast earth media with rugged topography. The ground motions from finite-fault seismic source of a Mw 5.2 hypothetical earthquake are simulated. The simulation results showed that the existence of soil basin and interlayer can impact greatly ground motions, and should be considered in studying ground motions.
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