%0 Journal Article
%T Absorbing Boundary Conditions in 3D Elastic-Wave Numerical Modeling<br>三维弹性波数值模拟中的吸收边界条件
%A XIA Fan DONG Liang Guo MA Zai Tian Laboratory of Marine Geology
%A MOE
%A Tongji University
%A Shanghai
%A China
%A <br>夏凡
%A 董良国
%A 马在田
%J 地球物理学报
%D 2004
%I 
%X The absorbing boundary conditions to avoid the artificial boundary reflections must be required in the numerical simulation of seismic wave propagation. In this paper, on the base of paraxial approximations, we present a set of absorbing boundary conditions of 3D elastic wave equations and apply to the 3D elastic wave numerical modeling in isotropic medium. The snapshots of the theoretical and salt model show that they reduce artificial reflections to a great extent and absorb energy over a wide range of incident angles. Since using forth order approximations, they save computer storage and are convenient to implement.
%K Seismic wave numerical modeling
%K Paraxial approximations
%K 3D elastic wave
%K Absorbing boundary condition<br>三维弹性波
%K 数值模拟
%K 地震波
%K 傍轴近似
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=1E44AE713D8A6DE0&jid=14DC41C59CBF6770055A7D610D53AE46&aid=D9AA19AB11F051E0&yid=D0E58B75BFD8E51C&vid=F4B561950EE1D31A&iid=CA4FD0336C81A37A&sid=7C72DBC13F2D71EC&eid=58F693790F887B3B&journal_id=0001-5733&journal_name=地球物理学报&referenced_num=10&reference_num=12