摘要
倾角时差校正（ＤＭＯ）方法对于复杂地质构造条件下的纵波反射波（Ｐ－Ｐ）的多次覆盖地震数据的叠加具有显著的提高信噪比的效果．对于转换反射波（Ｐ－ＳＶ）来说，进行倾角时差校正（ＤＭＯ）处理就更需要．本文首先对Ｐ－ＳＶ波的倾角时差校正（ＤＭＯ）的几何原理进行了分析，然后重点研究用波动方程进行ＤＭＯ的方法，即Ｐ－ＳＶ转换反射波的叠前部分偏移的波动方程法．这种方法也适用于Ｐ－Ｐ反射波的叠前部分偏移处理．研究结果表明，波动方程ＤＭＯ方法在振幅保真方面比几何原理的ＤＭＯ方法有显著改善．
Dip moveout (DMO) for P-P reflection is widely applied in practical seismic data processing and thus excellent geological results have been obtained. Many geophysicists now pay more attentions to DMO for P-SV converted reflection and a number of papers were published. I have studied the DMO by wave equation for P-SV converted reflection, which is also called partial prestack wave equation migration of P-SV reflection. A comparision of wave equation DMO with the geometric DMO was presented. The results show that the wave equation DMO described in this paper is better than the geometric DMO in preserving the amplitude.
出处
《地球物理学报》
SCIE
EI
CAS
CSCD
北大核心
1996年第2期243-250,共8页
Chinese Journal of Geophysics
基金
国家自然科学基金委员会
中国科学院
中国石油天然气总公司和大庆石油管理局联合资助
关键词
转换反射波
倾角时差校正
波动方程
地震波
P-SV converted reflection, DMO, Wave equation, Partial migration.
