%0 Journal Article
%T Multicomponent prestack reverse-time migration of elastic waves in transverse isotropic medium<br>横向各向同性介质弹性波多分量叠前逆时偏移
%A DU Qi-Zhen
%A QIN Tong
%A <br>杜启振
%J 地球物理学报
%D 2009
%I 
%X With the development of exploration in the mature exploration areas, the subtle trap is playing a dominant role. So, joint migration of multicomponent in anisotropic media is the key technology. This paper provided a full 2-D elastic prestack reverse time depth migration algorithm for common-source multicomponent data from VTI media. Extrapolation used the coupled anisotropic velocity-stress equation for variable velocity solved with a high order staggered grid finite-difference scheme in space and a second-order finite-difference scheme in time. A new imaging condition combined excitation-time imaging condition with Poynting vector was proposed to remove low-frequency artifacts. The algorithm was illustrated by application to synthetic data. The results show that this approach produces clear images and can remove low-frequency noises.
%K Imaging condition
%K Poynting vector
%K Multicomponent
%K Reverse-time migration
%K Staggered grid
%K VTI medium
%K Velocity-stress equation<br>成像条件
%K Poynting矢量
%K 多分量
%K 逆时偏移
%K 交错网格
%K VTI介质
%K 速度-应力方程
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=1E44AE713D8A6DE0&jid=14DC41C59CBF6770055A7D610D53AE46&aid=77F3C1D125A5295DDDB0C84426426031&yid=DE12191FBD62783C&vid=286FB2D22CF8D013&iid=38B194292C032A66&sid=0018E43E61963A72&eid=4FBF7A066D63EF1A&journal_id=0001-5733&journal_name=地球物理学报&referenced_num=9&reference_num=21