3D ACOUSTIC PRESTACK REVERSE‐TIME MIGRATION1
3D ACOUSTIC PRESTACK REVERSE‐TIME MIGRATION1
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DOI：
10.1111/j.1365-2478.1990.tb01872.x
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发表时间：
1990-10
影响因子：
2.6
通讯作者：
Wen-Fong Chang;G. McMechan
中科院分区：
文献类型：
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作者：
Wen-Fong Chang;G. McMechan
一个叠前逆时偏移算法，共源道集，记录在地球表面，从三维结构上操作，构思，实施和测试。记录的波场的逆时外推（边界值问题），和计算的激励时间成像条件的每个点在一个3D体积（初始值问题），都使用二阶有限差分解的完整的3D标量波动方程。该算法是通过处理合成数据的点衍射，斜楔，和法国双圆顶和故障模型。
A prestack reverse-time migration algorithm which operates on common-source gathers, recorded at the Earth's surface, from 3D structures, is conceived, implemented and tested. Reverse-time extrapolation of the recorded wavefield (a boundary-value problem), and computation of the excitation-time imaging condition for each point in a 3D volume (an initial-value problem), are both performed using a second-order finite-difference solution of the full 3D scalar wave equation. The algorithm is illustrated by processing synthetic data for a point diffractor, an oblique wedge, and the French double dome and fault model.