摘要
叠前深度偏移是转换波最佳成像方法。在研究P波叠前深度偏移的基础上,进一步研究了转换波叠前深度偏移方法,该方法涉及多波速度建模、震源函数求取以及延拓成像,其中偏移成像采用有较高精度的傅里叶有限差分(FFD)方法实现。经理论模型及实际资料处理证明了方法及软件的正确性。
Prestack depth migration is an optimal imaging method for PSV wave.Based on the study of P-wave prestack depth migration, this paper studied P-SV converted-wave prestack depth migration method.The method involved in multi-wave velocity model building, estimation of source function and imaging by wave field continuation.In migration image stage Fourier finite difference method (FFD) with higher precision was used.The theory model and real data processing have proved the correctness of this method and software.
出处
《勘探地球物理进展》
2005年第3期183-186,9,共4页
Progress in Exploration Geophysics
基金
国家863计划资助项目(2001AA602018-04)。
关键词
转换波
转换波叠前深度偏移
多波速度建模
傅里叶有限差分
P-SV wave
converted wave prestack depth migration
multi-wave model building
Fourier finite difference
