Joint inversion of Rayleigh wave phase velocity, particle motion, and teleseismic body wave data for sedimentary structures

Guoliang Li, Fenglin Niu*, Yingjie Yang, Kai Tao

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

Mapping seismic structures of sedimentary basins is of great importance to better evaluate energy resources and seismic hazards. In this study, we develop a joint Bayesian Monte Carlo nonlinear inversion method that utilizes the complementary nature of Rayleigh wave phase velocity, Rayleigh wave particle motion, and teleseismic P wave in responding to sedimentary structures. Synthetic tests demonstrate that our joint inversion can retrieve the input sedimentary models better than inversions with surface or body wave data alone. We apply our method to waveform data of two broadband stations inside the Songliao Basin in northeast China to invert for sedimentary structures beneath the two stations. We verify our results by successfully isolating the Moho P-to-S conversion from sediment reverberations in surface receiver functions with a wavefield-downward-continuation technique. We further demonstrate that we can extend our method to single-station inversions by excluding the Rayleigh wave phase velocity in the inversion.

Original languageEnglish
Pages (from-to)6469-6478
Number of pages10
JournalGeophysical Research Letters
Volume46
Issue number12
DOIs
Publication statusPublished - 28 Jun 2019

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