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Slab Morphology Beneath Northern Sumatra Revealed by Regional and Teleseismic Traveltime Tomography

文献类型：期刊论文

作者LiU, Shaolin1,5,6,7; Suardi, Iman4; Zheng, Ming3; Yang, Dinghui6; Huang, Xueyuan1; Tong, Ping1,2,7
刊名JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
出版日期2019-10-30
页码21
ISSN号2169-9313
关键词slab subduction tomography Toba Caldera northern Sumatra
DOI10.1029/2019JB017625
英文摘要An eikonal equation-based tomography method is used to invert the high-quality regional and teleseismic traveltime data recorded by 26 broadband seismic stations in northern Sumatra, following which we obtain the P and S wave velocity structures of the crust and mantle down to a depth of 800 km. The results of both P and S wave tomography clearly show that the Indo-Australian oceanic plate continuously penetrates downward beneath northern Sumatra and the maximum penetration depth varies approximately from 400 km at the northern tip of Sumatra to about 800 km around the southern boundary of our study area. Significant slab folding or bending reported in the literature as the main feature of the subducted slab beneath northern Sumatra is not found in our results. Instead, our tomographic images demonstrate only a less curved slab that mimics the shape of the Sunda Trench and volcanic arc and generally extends over depths from 120 to 450 km. P wave tomography shows broad and pronounced low-velocity anomalies beneath the island of Sumatra in the lower crust and uppermost mantle. Our model also reveals a slab tear approximately at 120-km depth, which has been documented in previous studies and considered to be related to the eruption of the Toba supervolcano.
WOS关键词VELOCITY STRUCTURE BENEATH ; SEISMIC TOMOGRAPHY ; NIAS-ISLAND ; MANTLE ; EVOLUTION ; ASIA ; EQUATION ; ZONE ; RECONSTRUCTIONS ; CONSTRAINTS
资助项目National Research Foundation ; Ministry of Education (MOE), Singapore, under the Research Centres of Excellence Initiative[M4430287.B50] ; MOE AcRF Tier-1 Grant[M4011899.110] ; National Natural Science Foundation of China[U1839206] ; National Natural Science Foundation of China[41604034] ; International Postdoctoral Exchange Fellowship Program ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution[SKL-K201804]
WOS研究方向Geochemistry & Geophysics
语种英语
出版者AMER GEOPHYSICAL UNION
WOS记录号WOS:000493194900001
资助机构National Research Foundation ; National Research Foundation ; National Research Foundation ; National Research Foundation ; Ministry of Education (MOE), Singapore, under the Research Centres of Excellence Initiative ; Ministry of Education (MOE), Singapore, under the Research Centres of Excellence Initiative ; Ministry of Education (MOE), Singapore, under the Research Centres of Excellence Initiative ; Ministry of Education (MOE), Singapore, under the Research Centres of Excellence Initiative ; MOE AcRF Tier-1 Grant ; MOE AcRF Tier-1 Grant ; MOE AcRF Tier-1 Grant ; MOE AcRF Tier-1 Grant ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution ; National Research Foundation ; National Research Foundation ; National Research Foundation ; National Research Foundation ; Ministry of Education (MOE), Singapore, under the Research Centres of Excellence Initiative ; Ministry of Education (MOE), Singapore, under the Research Centres of Excellence Initiative ; Ministry of Education (MOE), Singapore, under the Research Centres of Excellence Initiative ; Ministry of Education (MOE), Singapore, under the Research Centres of Excellence Initiative ; MOE AcRF Tier-1 Grant ; MOE AcRF Tier-1 Grant ; MOE AcRF Tier-1 Grant ; MOE AcRF Tier-1 Grant ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution ; National Research Foundation ; National Research Foundation ; National Research Foundation ; National Research Foundation ; Ministry of Education (MOE), Singapore, under the Research Centres of Excellence Initiative ; Ministry of Education (MOE), Singapore, under the Research Centres of Excellence Initiative ; Ministry of Education (MOE), Singapore, under the Research Centres of Excellence Initiative ; Ministry of Education (MOE), Singapore, under the Research Centres of Excellence Initiative ; MOE AcRF Tier-1 Grant ; MOE AcRF Tier-1 Grant ; MOE AcRF Tier-1 Grant ; MOE AcRF Tier-1 Grant ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution ; National Research Foundation ; National Research Foundation ; National Research Foundation ; National Research Foundation ; Ministry of Education (MOE), Singapore, under the Research Centres of Excellence Initiative ; Ministry of Education (MOE), Singapore, under the Research Centres of Excellence Initiative ; Ministry of Education (MOE), Singapore, under the Research Centres of Excellence Initiative ; Ministry of Education (MOE), Singapore, under the Research Centres of Excellence Initiative ; MOE AcRF Tier-1 Grant ; MOE AcRF Tier-1 Grant ; MOE AcRF Tier-1 Grant ; MOE AcRF Tier-1 Grant ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution ; Open Fund Project of the State Key Laboratory of Lithospheric Evolution
源URL[http://ir.iggcas.ac.cn/handle/132A11/95717]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Tong, Ping
作者单位1.Nanyang Technol Univ, Earth Observ Singapore, Singapore, Singapore
2.Nanyang Technol Univ, Asian Sch Environm, Singapore, Singapore
3.Chinese Acad Geol Sci, Inst Mineral Resources, Beijing, Peoples R China
4.State Coll Meteorol Climatol & Geophys STMKG, South Tangerang, Indonesia
5.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
6.Tsinghua Univ, Dept Math Sci, Beijing, Peoples R China
7.Nanyang Technol Univ, Sch Phys & Math Sci, Div Math Sci, Singapore, Singapore
推荐引用方式
GB/T 7714		 LiU, Shaolin,Suardi, Iman,Zheng, Ming,et al. Slab Morphology Beneath Northern Sumatra Revealed by Regional and Teleseismic Traveltime Tomography[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2019:21.
APA LiU, Shaolin,Suardi, Iman,Zheng, Ming,Yang, Dinghui,Huang, Xueyuan,&Tong, Ping.(2019).Slab Morphology Beneath Northern Sumatra Revealed by Regional and Teleseismic Traveltime Tomography.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,21.
MLA LiU, Shaolin,et al."Slab Morphology Beneath Northern Sumatra Revealed by Regional and Teleseismic Traveltime Tomography".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH (2019):21.

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来源：地质与地球物理研究所

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