USING DOWNWARD CONTINUATION TO REDUCE MEMORY REQUIREMENTS IN REVERSE-TIME MIGRATION

被引：10

作者：

HARRIS, CE ^{[1
]}

MCMECHAN, GA ^{[1
]}

机构：

[1] UNIV TEXAS,CTR LITHOSPHER STUDIES,RICHARDSON,TX 75083

来源：

GEOPHYSICS | 1992年 / 57卷 / 06期

关键词：

D O I：

10.1190/1.1443298

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

In conventional reverse-time depth migration, successive time slices from a stacked seismic section are inserted as boundary values at the top of the image space, and the wavefield is extrapolated backward in time until time = 0. The resulting fixed-time snapshot of the propagating wavefield, in space, is the migrated image. A simplified and highly optimized downward continuation process is proposed that preserves the benefits of conventional reverse-time migration and requires no layer identification. The algorithm is illustrated with synthetic examples. -from Authors

引用

页码：848 / 853

页数：6

共 12 条

[1] REVERSE TIME MIGRATION [J].