文章摘要
邓峰,程广利,刘宝.无限元边界条件下的浅海海底地震波场建模[J].声学技术,2021,40(4):445~450
无限元边界条件下的浅海海底地震波场建模
Modeling of shallow seabed seismic wave field under infinite element boundary condition
投稿时间:2020-03-16  修订日期:2020-06-20
DOI:10.16300/j.cnki.1000-3630.2021.04.001
中文关键词: 浅海  海底地震波  无限元  Scholte波  完美匹配层
英文关键词: shallow water  seabed seismic waves  infinite element  Scholte wave  perfect matched layer
基金项目:国防科技创新特区项目支持(ZT-001-002-10)资助项目。
作者单位E-mail
邓峰 海军工程大学电子工程学院, 湖北武汉 430033
91001 部队, 北京 100089 
 
程广利 海军工程大学电子工程学院, 湖北武汉 430033 sonarcgl@126.com 
刘宝 海军工程大学电子工程学院, 湖北武汉 430033  
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中文摘要:
      针对模拟无限大的海底地震波传播问题,应用无限元理论,提出了一种基于无限元边界条件的地震波建模方法,仿真了海底应力场,与高阶交错网格有限差分法仿真结果比对,验证建模方法的正确性。进一步分析无限元边界对海底地震波的吸收效果,结果表明无限元边界对纵波、横波的吸收效果好,可应用于海底地震波场建模中。
英文摘要:
      A method modeling the shallow seabed seismic wave field based on infinite element boundary is proposed, in which, the infinite element theory is used for simulating the infinite seabed. The stress field in the seabed is calculated by the proposed model, and then the simulation results are compared with that of the high-order staggered-grid finite difference method to prove the validity of the proposed modeling method. The absorption effect of the infinite boundary on the seabed seismic wave is studied, which shows that the absorption effects of the infinite element boundary on the compressional wave and shear wave are good, which can be applied to model the shallow seabed seismic wave field.
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