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  2. 地质与地球物理研究所
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  4. 中国科学院油气资源研究重点实验室
Joint tomographic inversion of crustal structure beneath the eastern Tibetan Plateau with ambient noise and gravity data

文献类型：期刊论文

作者Du, Nanqiao3,5,6; Li, Zhiwei4; Hao, Tianyao2,3,5,6; Xia, Xin3,5,6; Shi, Yutao1; Xu, Ya3,5,6
刊名GEOPHYSICAL JOURNAL INTERNATIONAL
出版日期2021-12-01
卷号227期号:3页码:1961-1979
关键词Gravity anomalies and Earth structure Joint inversion Seismic noise Seismic tomography Crustal structure
ISSN号0956-540X
DOI10.1093/gji/ggab299
英文摘要We have developed a joint tomographic inversion method with seismic surface wave dispersion and gravity data for obtaining more reliable crustal 3-D shear wave structures. We take the eikonal-based direct surface wave tomographic method and adaptive gravity modelling method in spherical coordinates in the inverse problem. Based on the empirical relations between seismic velocity and density parameters, our method combines surface wave dispersion curves (i.e. surface wave travel-times at different periods) and Bouguer gravity anomaly data together to invert for 3-D shear wave velocity structures. In our method, off-great-circle propagation of the surface wave and the earth's curvature is considered in the forward modelling. Synthetic tests suggest that the joint tomographic method could improve the reliability and obtain more convincing results than individual seismic surface wave tomography. The gravity data can provide more constraints into the model resolution and help restore the crustal anomalies better. The inversion results in the eastern Tibetan Plateau and Sichuan basin indicate complex distributions of low-velocity zone in the mid-crust of the eastern Tibetan Plateau and a craton-like basement of the Sichuan basin, which supports the crust channel flow model. Although both the 3-D shear wave velocity model from joint inversion and the individual seismic surface wave inversion can fit the surface wave data almost equally well, the joint inversion model can better match the gravity data We also found that the 3-D model from joint inversion in this study shows similar structural characteristics with the surface wave tomographic model, which indicates the icing on the cake effects of gravity data.
WOS关键词SURFACE-WAVE TOMOGRAPHY ; PHASE-VELOCITY ; BODY WAVES ; SE TIBET ; TECTONIC EVOLUTION ; RECEIVER FUNCTION ; QINLING OROGEN ; DISPERSION ; DEFORMATION ; TAIWAN
资助项目National Key Research and Development Program of China[2018YFC1504202] ; China Earthquake Science Experiment Project[2019CSES0102] ; National Natural Science Foundation of China[91858212] ; National Natural Science Foundation of China[42174076] ; National Natural Science Foundation of China[41974064] ; National Natural Science Foundation of China[41674065]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000702014700021
出版者OXFORD UNIV PRESS
资助机构National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; China Earthquake Science Experiment Project ; China Earthquake Science Experiment Project ; China Earthquake Science Experiment Project ; China Earthquake Science Experiment Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; China Earthquake Science Experiment Project ; China Earthquake Science Experiment Project ; China Earthquake Science Experiment Project ; China Earthquake Science Experiment Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; China Earthquake Science Experiment Project ; China Earthquake Science Experiment Project ; China Earthquake Science Experiment Project ; China Earthquake Science Experiment Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; China Earthquake Science Experiment Project ; China Earthquake Science Experiment Project ; China Earthquake Science Experiment Project ; China Earthquake Science Experiment Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/102692]  
专题地质与地球物理研究所_中国科学院油气资源研究重点实验室
通讯作者Li, Zhiwei
作者单位1.China Earthquake Adm, Inst Earthquake Forecasting, Beijing 100036, Peoples R China
2.State Ocean Adm, Key Lab Submarine Geosci, Inst Oceanog 2, Hangzhou 310012, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Beijing Inst Spacecraft Environm Engn, Sci & Technol Reliabil & Environm Engn Lab, Beijing 100094, Peoples R China
5.Chinese Acad Sci, Inst Arth Sci, Beijing 100029, Peoples R China
6.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Du, Nanqiao,Li, Zhiwei,Hao, Tianyao,et al. Joint tomographic inversion of crustal structure beneath the eastern Tibetan Plateau with ambient noise and gravity data[J]. GEOPHYSICAL JOURNAL INTERNATIONAL,2021,227(3):1961-1979.
APA Du, Nanqiao,Li, Zhiwei,Hao, Tianyao,Xia, Xin,Shi, Yutao,&Xu, Ya.(2021).Joint tomographic inversion of crustal structure beneath the eastern Tibetan Plateau with ambient noise and gravity data.GEOPHYSICAL JOURNAL INTERNATIONAL,227(3),1961-1979.
MLA Du, Nanqiao,et al."Joint tomographic inversion of crustal structure beneath the eastern Tibetan Plateau with ambient noise and gravity data".GEOPHYSICAL JOURNAL INTERNATIONAL 227.3(2021):1961-1979.

入库方式： OAI收割

来源：地质与地球物理研究所

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