%0 Journal Article
%T SIMULATION OF PML ABSORBING BOUNDARY CONDITION WITH SECOND-ORDER ELASTIC WAVE EQUATION IN ANISOTROPIC MEDIA<br>各向异性介质中二阶弹性波方程模拟PML吸收边界条件
%A Zhu Zhaolin
%A Ma Zaitian
%A <br>朱兆林
%A 马在田
%J 大地测量与地球动力学
%D 2007
%I 
%X A new alternative perfectly matched layer (PML) absorbing boundary condition is developed to attenuate the artificial boundary reflections generated in numerical simulation of the second-order elastic wave equation. The second-order equation can be described by displacement, which is more appropriate than the first-order one. Its PML condition conventionally needs to split the displacement into four parts, which occupies a large amount of memory and requires solving a third-order differential equation in time. As for the other choice, non-splitting PML method may be applied to the second-order equation, but it requires solving the dual integral in time. The new method can solve or simplity the above problems. Finally, a staggered-grid finite difference method with this PML condition is used to simulate an anisotropic media model and the results show that the method is efficient.
%K simulation
%K perfectly matched layer(PML)
%K absorbing boundary
%K second-order elastic wave equation
%K anisotropic media<br>模拟
%K 最佳匹配层
%K 吸收边界
%K 二阶波动方程
%K 各向异性介质
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=DA72A78627FE64EAA572951EA05D274A&jid=73A1A428591E600EF664B596512A2997&aid=D8051B66BB891A2E376D3D546F0B6734&yid=A732AF04DDA03BB3&vid=DB817633AA4F79B9&iid=94C357A881DFC066&sid=318E4CC20AED4940&eid=9FFCC7AF50CAEBF7&journal_id=1671-5942&journal_name=大地测量与地球动力学&referenced_num=0&reference_num=15