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Coseismic Slip Distribution of the 24 January 2020 M-w 6.7 Doganyol Earthquake and in Relation to the Foreshock and Aftershock Activities

文献类型：期刊论文

作者Lin, Xin4; Hao, Jinlai3; Wang, Dun2; Chu, Risheng4; Zeng, Xiangfang4; Xie, Jun4; Zhang, Baolong4; Bai, Qipeng1
刊名SEISMOLOGICAL RESEARCH LETTERS
出版日期2021
卷号92期号:1页码:127-139
ISSN号0895-0695
DOI10.1785/0220200152
英文摘要On 24 January 2020 (UTC), a destructive M-w 6.7 earthquake struck the east Anatolian fault of eastern Turkey after a series of foreshocks, causing many casualties and significant property damage. In this study, the rupture process of this earthquake is investigated with teleseismic broadband body-wave and surface-wave records. Results indicate that this earthquake is a left-lateral strike-slip event, and the rupture extends mainly to south. The main slip patch spreads 30 km along strike in the shallow above 14 km with a peak slip of -1.2 m, and the total seismic moment is 1.69 x 10(19) N.m. The east-west component of horizontal surface displacement predicted with our slip model ranges from 0.4 to -0.3 m. The predicted displacements are consistent with the observed ones obtained from satellite images. We relocate 459 foreshocks and early aftershocks to explore the relationship between foreshock and aftershock sequences and coseismic slip. It is noted that there is an anticorrelation relationship between the distributions of early aftershocks and the coseismic slip. The strain energy in the large slip patch may have been sufficiently released by the mainshock; therefore, fewer early aftershocks occurred in that patch. Although we note a similar pattern between the relocated foreshock and coseismic slip, and a migration of foreshock, our dataset may not well resolve the correlation and migration due to the incomplete relocation foreshock catalog. Based on the slip model, we calculate the coulomb stress changes on the surrounding faults caused by the mainshock. The results reveal that the main shock promoted stress accumulation on the northern and southern ends of the Elazig-Matalya segment and may reactivate the locked fault segment, leading to a high seismic risk in these regions. Although this earthquake does not significantly increase the coulomb stress change, the seismic risk of the Matalya-Kahraman Maras-Antakya segment should draw attention.
WOS关键词ANATOLIAN FAULT ZONE ; TELESEISMIC BODY ; STRESS CHANGES ; EAST ; CALIFORNIA ; PROPAGATION ; KINEMATICS ; EVOLUTION ; CATALOGS ; HISTORY
资助项目National Natural Science Foundation of China[41904062] ; National Natural Science Foundation of China[41974067] ; National Key R&D Program of China[2018YFC1504202]
WOS研究方向Geochemistry & Geophysics
语种英语
出版者SEISMOLOGICAL SOC AMER
WOS记录号WOS:000606809300005
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/100014]  
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Zeng, Xiangfang
作者单位1.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei, Peoples R China
2.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Sch Earth Sci, Wuhan, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
4.Chinese Acad Sci, Innovat Acad Precis Measurement Sci & Technol, State Key Lab Geodesy & Earths Dynam, Wuhan, Peoples R China
推荐引用方式
GB/T 7714		 Lin, Xin,Hao, Jinlai,Wang, Dun,et al. Coseismic Slip Distribution of the 24 January 2020 M-w 6.7 Doganyol Earthquake and in Relation to the Foreshock and Aftershock Activities[J]. SEISMOLOGICAL RESEARCH LETTERS,2021,92(1):127-139.
APA Lin, Xin.,Hao, Jinlai.,Wang, Dun.,Chu, Risheng.,Zeng, Xiangfang.,...&Bai, Qipeng.(2021).Coseismic Slip Distribution of the 24 January 2020 M-w 6.7 Doganyol Earthquake and in Relation to the Foreshock and Aftershock Activities.SEISMOLOGICAL RESEARCH LETTERS,92(1),127-139.
MLA Lin, Xin,et al."Coseismic Slip Distribution of the 24 January 2020 M-w 6.7 Doganyol Earthquake and in Relation to the Foreshock and Aftershock Activities".SEISMOLOGICAL RESEARCH LETTERS 92.1(2021):127-139.

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来源：地质与地球物理研究所

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