%0 Journal Article
%T Viscoelastic wave modeling in heterogeneous and isotropic media<br>基于非均匀各向同性介质的黏弹性波正演数值模拟
%A YANG Ren-Hu
%A CHANG Xu
%A LIU Yi-Ke
%A <br>杨仁虎
%J 地球物理学报
%D 2009
%I 
%X In this paper, the authors present simplified viscoelastic wave equations in heterogeneous and isotropic media based on generalized linear viscoelasticity. Viscoelastic Lame constants are introduced and Lame difference matrix is put forward. Lame difference matrix that has the similar form with physical property matrix holds a certain quantitative relation with elastic and viscoelastic physical property matrices. It makes the viscoelastic equations more concise. The viscoelastic modeling in 2-D SEG/EAGE salt dome model is carried out by using the simplified viscoelastic equations. A comparison of the viscoelastic single-shot records derived from acoustic equations, Carcione's equations and the simplified viscoelastic equations is made. The results show that the simplified viscoelastic equations not only have the better effects of single-shot records, but also have a better computational efficiency than Carcione's viscoelastic equations and it agrees well with the theoretical analysis.
%K Lame difference matrix
%K Lame difference coefficient
%K Viscoelastic Lame constants
%K Viscoelasitc equations<br>拉梅差异矩阵
%K 拉梅差异系数
%K 黏弹性拉梅常量
%K 黏弹性波方程
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=1E44AE713D8A6DE0&jid=14DC41C59CBF6770055A7D610D53AE46&aid=8345A1CCBD0BD74738DC0AE71EDA9D83&yid=DE12191FBD62783C&vid=286FB2D22CF8D013&iid=9CF7A0430CBB2DFD&sid=3AA09342F6AD7B4B&eid=2A995BFD71B93D86&journal_id=0001-5733&journal_name=地球物理学报&referenced_num=2&reference_num=8