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SKS Splitting Measurements in NE China: New Insights Into the Wudalianchi Intraplate Volcanism and Mantle Dynamics

文献类型：期刊论文

作者Lu, Mingwen6; Lei, Jianshe6; Zhao, Dapeng1; Ai, Yinshuang3,4,5; Xu, Xiwei6; Zhang, Guibin2
刊名JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
出版日期2020-03-01
卷号125期号:3页码:18
ISSN号2169-9313
DOI10.1029/2019JB018575
英文摘要To 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.
WOS关键词SEISMIC ANISOTROPY BENEATH ; P-WAVE TOMOGRAPHY ; TRANSITION ZONE ; AZIMUTHAL ANISOTROPY ; NORTHEAST CHINA ; EASTERN CHINA ; CRUSTAL ANISOTROPY ; UPPERMOST MANTLE ; DEEP-STRUCTURE ; PACIFIC SLAB
资助项目National 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]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000530895800036
出版者AMER GEOPHYSICAL UNION
资助机构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 ; 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
源URL[http://ir.iggcas.ac.cn/handle/132A11/96710]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Lei, Jianshe
作者单位1.Tohoku Univ, Grad Sch Sci, Dept Geophys, Sendai, Miyagi, Japan
2.China Univ Geosci, Sch Geophys & Informat Technol, Beijing, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
4.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
6.CEA, Key Lab Crustal Dynam, Inst Crustal Dynam, Beijing, Peoples R China
推荐引用方式
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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来源：地质与地球物理研究所

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