弹性波方程正演混合吸收边界的改进Forward Modeling of Elastic Wave Equation with the Improved Hybrid Absorbing Boundary Condition
崔丽苹,张会星
摘要(Abstract):
边界反射问题是地震波正演模拟的重要研究内容,高吸收效率、低消耗的边界条件越来越受到关注。本文针对弹性波一阶方程正演模拟过程中的混合吸收边界存在的问题,提出一种过渡区指数型加权叠加参数的混合吸收边界条件。模型模拟结果表明,同常规混合吸收边界算法相比,本文算法能够提高边界反射压制效果,提高数值模拟精度。
关键词(KeyWords): 混合吸收边界;指数型加权叠加参数;速度应力方程;正演模拟
基金项目(Foundation): 国家自然科学基金“部分饱和孔隙介质中地震波的衰减和频散机理研究”(41204089)资助~~
作者(Author): 崔丽苹,张会星
DOI: 10.16441/j.cnki.hdxb.20170386
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