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SKS Splitting Measurements in NE China: New Insights Into the Wudalianchi Intraplate Volcanism and Mantle Dynamics
Lu, Mingwen1; Lei, Jianshe1; Zhao, Dapeng2; Ai, Yinshuang3,4,5; Xu, Xiwei1; Zhang, Guibin6
2020-03-01
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
ISSN2169-9313
Volume125Issue:3Pages:18
AbstractTo better understand the Wudalianchi intraplate volcanism and mantle dynamics in NE China, we collect abundant teleseismic waveform data during 2008 to 2018 recorded at 259 seismic stations around the Wudalianchi volcano. These stations include 148 WAVESArray portable stations, 66 NECESSArray portable stations and 45 Chinese provincial stations. Our newly deployed WAVESArray makes the station intervals of similar to 20-30 km around the Wudalianchi volcano. Using the minimum transverse-energy grid-search method, we make effective SKS splitting measurements at 192 stations. Our results show that the fast direction in the study region is mainly NW-SE, but there are obvious contrasts within and between different tectonic units. To the east of the North-South Gravity Lineament, around the Wudalianchi volcano, our SKS splitting measurements show a southeastward opening U-shaped pattern in the fast direction and splitting time. Such a pattern of seismic anisotropy could be caused by horizontal and vertical flows in the big mantle wedge due to the deep subduction, long stagnancy, and deep dehydration of the Pacific slab in the mantle transition zone. The horizontal flow in the big mantle wedge could be obstructed by the thicker lithosphere under the Great Xing'an range and disturbed by hot and wet upwelling flow under the Wudalianchi volcano. Around the Nuominhe and Halaha volcanic groups, variations in the splitting parameters may also be associated with lithospheric deformation and delamination, though they are located at the edge of our study region. These results shed new light on the intraplate volcanism and mantle dynamics in NE China.
DOI10.1029/2019JB018575
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences
WOS KeywordSEISMIC ANISOTROPY BENEATH ; P-WAVE TOMOGRAPHY ; TRANSITION ZONE ; AZIMUTHAL ANISOTROPY ; NORTHEAST CHINA ; EASTERN CHINA ; CRUSTAL ANISOTROPY ; UPPERMOST MANTLE ; DEEP-STRUCTURE ; PACIFIC SLAB
Language英语
Funding ProjectNational Natural Science Foundation of China[41530212] ; National Natural Science Foundation of China[41474040] ; National Natural Science Foundation of China[41674091] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB18000000]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000530895800036
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/96710
Collection地球与行星物理院重点实验室
Corresponding AuthorLei, Jianshe
Affiliation1.CEA, Key Lab Crustal Dynam, Inst Crustal Dynam, Beijing, Peoples R China
2.Tohoku Univ, Grad Sch Sci, Dept Geophys, Sendai, Miyagi, Japan
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
4.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China
5.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
6.China Univ Geosci, Sch Geophys & Informat Technol, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Lu, Mingwen,Lei, Jianshe,Zhao, Dapeng,et al. SKS Splitting Measurements in NE China: New Insights Into the Wudalianchi Intraplate Volcanism and Mantle Dynamics[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2020,125(3):18.
APA Lu, Mingwen,Lei, Jianshe,Zhao, Dapeng,Ai, Yinshuang,Xu, Xiwei,&Zhang, Guibin.(2020).SKS Splitting Measurements in NE China: New Insights Into the Wudalianchi Intraplate Volcanism and Mantle Dynamics.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,125(3),18.
MLA Lu, Mingwen,et al."SKS Splitting Measurements in NE China: New Insights Into the Wudalianchi Intraplate Volcanism and Mantle Dynamics".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 125.3(2020):18.
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