摘要：Elastic reflection waveform inversion has great potential to update the low-wavenumber components of P- and S-velocities by relying on reflection kernels. However, the PP and SS mode wavepaths always overlap together due to the coupling effects of different wave modes, and the wavepath overlapping makes the reflection kernels very complicated and introduces artifacts into the inverted P- and S-velocity models. In this abstract, we demonstrate the efforts for inverting the background velocities via elastic reflection traveltime inversion (ERTI), then introduce a decoupled wave equation into ERTI to reduce the coupling effects of different wave modes and further improve the inversion result, especially for the S-velocity. The application on Sigsbee2A model shows the validity of our decoupled ERTI method.
© 2018 SEG.

卷、期、页：p1193-1197

发表日期：2019-01-01

期刊分区（SCI为中科院分区）：无

收录情况：EI（工程索引）,国际学术会议论文集

发表期刊名称：SEG Int. Expo. Annu. Meet., SEG

通讯作者：王官超,Zhang, Mingqiang,宋建勇

第一作者：王尚旭,贺艳晓

论文类型：会议论文

论文概要：王官超,王尚旭,Zhang, Mingqiang,宋建勇,贺艳晓，Decoupled elastic reflection traveltime inversion for improving S-wave velocity imaging，SEG Int. Expo. Annu. Meet., SEG，2019，p1193-1197

论文题目：Decoupled elastic reflection traveltime inversion for improving S-wave velocity imaging