基于优化交错网格有限差分法的VSP逆时偏移

刘炜, 王彦春, 毕臣臣, 徐仲博

Reverse time migration of VSP data based on the optimal staggered-grid finite-difference method

LIU Wei, WANG Yan-Chun, BI Chen-Chen, XU Zhong-Bo

图8 多层层状模型在不同时刻的波场快照 a—正传波场;b—重构波场;c—正传波场和重构波场之间的差异;从左至右依次为0.4、0.8、1.2 s时刻

Fig.8 Snapshots at different time for the multilayer model a—forward wavefields;b—reconstructed wavefields;c—difference between the forward and reconstructed wavefields;from left to right time at 0.4,0.8,1.2 s