速度误差和地震噪声对最小二乘逆时偏移的影响分析

马振, 孙成禹, 彭鹏鹏, 姚振岸

An analysis of the influence of velocity error and seismic noise on least squares reverse-time migration

Zhen MA, Cheng-Yu SUN, Peng-Peng PENG, Zhen-An YAO

图6 不同平滑程度的Marmousi模型 a—真实速度(e=0%);b—偏移速度模型1(e=2.7%);c—偏移速度模型2(e=5.24%);d—偏移速度模型3(e=7.28%)

Fig.6 Marmousi model with different smoothness a—accurate speed(e=0%);b—migration velocity model 1(e=2.7%);c—migration velocity model 2(e=5.24%);d—migration velocity model 3(e=7.28%)