气候变化领域集成服务门户(CCPortal): The Complexity of the 2018 Kaktovik Earthquake Sequence in the Northeast of the Brooks Range; Alaska

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DOI	10.1029/2020GL088012
	The Complexity of the 2018 Kaktovik Earthquake Sequence in the Northeast of the Brooks Range; Alaska
	Xu G.; Xu C.; Wen Y.; Xiong W.; Valkaniotis S.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:19
英文摘要	We use mainly geodetic observations to constrain the fault geometry and coseismic distribution of the 2018 Kaktovik earthquake sequence, Alaska. We find that at least three faults were activated. The earthquake sequence ruptured mainly an ESE-striking, SSW-dipping strike-slip fault and a secondary rupture on an SE-striking, SW-dipping normal fault. Slip also occurred on a small SSW-striking fault plane, which is found first in geodetic data and further verified with geological data and focal mechanism solutions. We also map 6 months of postseismic deformation and find obvious displacements in the center of the Sadlerochit Mountains. A geological model is proposed to interpret the relationship between this earthquake sequence and the regional structure. We suggest that the 2018 Kaktovik earthquake sequence may first have occurred on a fault unknown prior to the mainshock and triggered slip on both the pre-existing ramp structure below the Sadlerochit Mountains and a secondary structure. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Earthquakes; Geodesy; Strike-slip faults; Earthquake sequences; Focal mechanism; Geodetic observation; Geological data; Geological modeling; Postseismic deformation; Regional structure; Secondary structures; Fault slips; complexity; earthquake event; earthquake rupture; fault geometry; focal mechanism; spatiotemporal analysis; strike-slip fault; Alaska; Barter Island; Brooks Range; Kaktovik; United States
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169640
作者单位	School of Geodesy and Geomatics, Wuhan University, Wuhan, China; Faculty of Geomatics, East China University of Technology, Nanchang, China; Key Laboratory of Geospace Environment and Geodesy, Ministry of Education, Wuhan University, Wuhan, China; Key Laboratory of Geophysical Geodesy, Ministry of Natural Resources, Wuhan, China; Key Laboratory of Earthquake Geodesy, Institute of Seismology, Wuhan, China; Koronidos Str., 42131, Trikala, Greece
推荐引用方式 GB/T 7714	Xu G.,Xu C.,Wen Y.,et al. The Complexity of the 2018 Kaktovik Earthquake Sequence in the Northeast of the Brooks Range; Alaska[J],2020,47(19).
APA	Xu G.,Xu C.,Wen Y.,Xiong W.,&Valkaniotis S..(2020).The Complexity of the 2018 Kaktovik Earthquake Sequence in the Northeast of the Brooks Range; Alaska.Geophysical Research Letters,47(19).
MLA	Xu G.,et al."The Complexity of the 2018 Kaktovik Earthquake Sequence in the Northeast of the Brooks Range; Alaska".Geophysical Research Letters 47.19(2020).