| 双程声波方程逆时深度偏移 |
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| 引用本文： | 何兵寿,张会星,范国苗.双程声波方程逆时深度偏移[J].物探化探计算技术,2010,32(2):113-119. |
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| 作者姓名： | 何兵寿 张会星 范国苗 |
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| 作者单位： | 中国海洋大学,海底科学与探测技术教育部重点实验室,山东,青岛,266100 |
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| 基金项目： | 国家自然科学基金项目，国家自然科学重点基金项目，973项目 |
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| 摘 要： | 从双程声波方程出发,在交错网格空间中推导了地震波逆时延拓的高阶有限差分算子,依据最佳匹配层(PML)的方程分裂思路,得到了一阶声波方程的PML边界条件及其高阶差分格式,采用零时间成像条件和上行、下行波场互相关成像条件,实现了声波方程的叠后与叠前逆时深度偏移。逆时偏移对sigsbee_2b模型理论数据的偏移成像得到了满意效果。
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| 关 键 词： | 声波方程 逆时偏移 有限差分 边界条件 成像条件 |
REVERSE-TIME DEPTH MIGRATION OF TWO WAY ACOUSTIC WAVE EQUATIONS |
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| HE Bing-shou,ZHANG Hui-xing,FAN Guo-miao.REVERSE-TIME DEPTH MIGRATION OF TWO WAY ACOUSTIC WAVE EQUATIONS[J].Computing Techniques For Geophysical and Geochemical Exploration,2010,32(2):113-119. |
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| Authors: | HE Bing-shou ZHANG Hui-xing FAN Guo-miao |
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| Institution: | HE Bing-shou,ZHANG Hui-xing,FAN Guo-miao (Key Lab of Submarine Geosciences , Prospecting Techniques,Ministry of Education,Ocean University of China,Qingdao 266100,China). |
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| Abstract: | Based on two-way acoustic wave equations, a high-order finite difference reverse-time propagation scheme is established using a high precision operator in staggered-grid, and a perfectly matched layer(PML) absorbing boundary conditions is also proposed in the paper which can be computed by the same finite different scheme. Based on above two techniques, the post-stack and pre-stack reverse-time depth migrations of compression seismic wave are achieved by using a zero time imaging condition in post-stack mig... |
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| Keywords: | acoustic wave equations reverse-time migration finite difference boundary conditions imaging condition |
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