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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
Structure of the Gonghe Sedimentary Basin in the northeastern Tibetan Plateau: evidence from teleseismic P waves recorded by a dense seismic array

文献类型：期刊论文

作者Deng, Yufeng1,4,5; Li, Zhiwei6; Huang, Song1,4; Xu, Ya1,4; Hao, Tianyao1,4,5; Bao, Feng7; Zhang, Senqi8; Li, Shengtao8; Jia, Xiaofeng8; Tian, Puyuan8
刊名GEOPHYSICAL JOURNAL INTERNATIONAL
出版日期2023-07-27
卷号235期号:2页码:1697-1711
ISSN号0956-540X
关键词Time-series analysis Body waves Crustal imaging Earthquake ground motions Wave propagation
DOI10.1093/gji/ggad327
英文摘要The Gonghe Basin in the northeast Tibetan Plateau presents significant potential for hot dry rock (HDR) geothermal resources. A 1990 Mw 6.4 earthquake in the basin furthers the need for an improved understanding of its sedimentary structure. In this study, we utilize data from a dense seismic array of 88 short-period seismometers deployed at an interstation spacing of approximately 3 km to scrutinize the sedimentary structure of the Gonghe Basin. By analysing teleseismic P waveforms, we identify P-to-S converted waves (Ps wave) originating from the sedimentary basement. We then determine the delay time between the Ps waves and the direct P waves (P wave) through waveform cross-correlation. By integrating this delay time with empirical velocity structure models, HDR borehole data and results from teleseismic receiver function analysis, we derive a sediment thickness model of the Gonghe Basin for the Qabqa geothermal area. Our findings reveal a gradual increase in sediment thickness from around 500 m in the east to approximately 3000 m in the west, which is consistent with other geophysical surveys and borehole data. The thick sediments in the basin could potentially serve as an excellent thermal storage cover for HDR. The strong ground motion simulation using our sediment thickness model shows that thick sediments can amplify seismic waves, increasing the risk of seismic hazards. Moreover, our study indicates that the clear Ps waves can be effectively extracted to construct a dependable sediment thickness model using teleseismic P waves recorded by a short-period dense seismic array.
WOS关键词SHALLOW CRUSTAL STRUCTURE ; AMBIENT-NOISE TOMOGRAPHY ; RECEIVER-FUNCTIONS ; VELOCITY STRUCTURE ; GROUND-MOTION ; FREE-SURFACE ; BENEATH ; AREA ; CALIFORNIA ; ORIGIN
资助项目National Natural Science Foundation of China[41974064] ; National Natural Science Foundation of China[42174076] ; China Geological Survey[DD20190131]
WOS研究方向Geochemistry & Geophysics
语种英语
出版者OXFORD UNIV PRESS
WOS记录号WOS:001056958800002
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Geological Survey ; China Geological Survey ; China Geological Survey ; China Geological Survey ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Geological Survey ; China Geological Survey ; China Geological Survey ; China Geological Survey ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Geological Survey ; China Geological Survey ; China Geological Survey ; China Geological Survey ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Geological Survey ; China Geological Survey ; China Geological Survey ; China Geological Survey
源URL[http://ir.iggcas.ac.cn/handle/132A11/110837]  
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.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China
2.Southern Univ Sci & Technol, Dept Earth & Space Sci, Shenzhen 518055, Peoples R China
3.Inst Hydrogeol & Engn Geol Qinghai, Xining 810008, Peoples R China
4.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
5.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
6.Inst Spacecraft Environm Engn, Sci & Technol Reliabil & Environm Engn Lab, Beijing 100094, Peoples R China
7.Chinese Acad Sci, Innovat Acad Precis Measurement Sci & Technol, Wuhan 430077, Peoples R China
8.China Geol Survey, Ctr Hydrogeol & Environm Geol Survey, Baoding 071051, Peoples R China
推荐引用方式
GB/T 7714		 Deng, Yufeng,Li, Zhiwei,Huang, Song,et al. Structure of the Gonghe Sedimentary Basin in the northeastern Tibetan Plateau: evidence from teleseismic P waves recorded by a dense seismic array[J]. GEOPHYSICAL JOURNAL INTERNATIONAL,2023,235(2):1697-1711.
APA Deng, Yufeng.,Li, Zhiwei.,Huang, Song.,Xu, Ya.,Hao, Tianyao.,...&Zhang, Wei.(2023).Structure of the Gonghe Sedimentary Basin in the northeastern Tibetan Plateau: evidence from teleseismic P waves recorded by a dense seismic array.GEOPHYSICAL JOURNAL INTERNATIONAL,235(2),1697-1711.
MLA Deng, Yufeng,et al."Structure of the Gonghe Sedimentary Basin in the northeastern Tibetan Plateau: evidence from teleseismic P waves recorded by a dense seismic array".GEOPHYSICAL JOURNAL INTERNATIONAL 235.2(2023):1697-1711.

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来源：地质与地球物理研究所

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