气候变化领域集成服务门户(CCPortal): Diverse Slip Behavior of the Banyak Islands Subsegment of the Sunda Megathrust in Sumatra, Indonesia

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DOI	10.1029/2020JB020011
	Diverse Slip Behavior of the Banyak Islands Subsegment of the Sunda Megathrust in Sumatra, Indonesia
	Morgan P.M.; Feng L.; Meltzner A.J.; Mallick R.; Hill E.M.
发表日期	2020
ISSN	21699313
卷号	125 期号:11
英文摘要	Nearly every type of slip behavior of which megathrusts are known to be capable of has been observed within a narrow ~75-km-wide strip of the Sunda megathrust—the Banyak Islands subsegment. The diverse list of recorded slip events starts with the great 1861 MW ~ 8.5 earthquake and includes the 1907 MW ~ 8.2 shallow tsunami earthquake, the 1966–1981 slow slip event, the great 2005 MW 8.6 Nias-Simeulue earthquake and associated afterslip, many small (M < 6) to moderate (6 ≤ M < 7) earthquakes, and the large 6 April 2010 MW 7.8 Banyak Islands earthquake. In this paper we map out the spatial and temporal relationships between these slip events to search for a pattern and possible controls on slip behavior. We use GPS and coral geodetic data to derive a coseismic slip distribution for the relatively understudied 2010 event and find that this event fits like a puzzle piece into a low slip patch left by the 2005 event. We compare the recent slip sequence with the historical sequence associated with the 1861 event and find that the modern slip pattern could be a repeat of the historical slip pattern, possibly suggesting the importance of stationary fault properties in controlling slip. The diverse set of slip events mostly fit our expectations within depth-dependent rupture zones; however, the overlaps between events of different slip types may complicate this conceptual model. Along strike, we suggest that a subducting fracture zone could act to diversify the slip behavior, and we explore possible mechanisms for this slip control. ©2020. The Authors.
英文关键词	earthquake; geodetic inversion; slip diversity; subduction zones; Sumatra; tectonics
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187517
作者单位	Earth Observatory of Singapore, Nanyang Technological University, Singapore; Earth and Atmospheric Sciences, Cornell University, Ithaca, NY, United States; Asian School of the Environment, Nanyang Technological University, Singapore
推荐引用方式 GB/T 7714	Morgan P.M.,Feng L.,Meltzner A.J.,et al. Diverse Slip Behavior of the Banyak Islands Subsegment of the Sunda Megathrust in Sumatra, Indonesia[J],2020,125(11).
APA	Morgan P.M.,Feng L.,Meltzner A.J.,Mallick R.,&Hill E.M..(2020).Diverse Slip Behavior of the Banyak Islands Subsegment of the Sunda Megathrust in Sumatra, Indonesia.Journal of Geophysical Research: Solid Earth,125(11).
MLA	Morgan P.M.,et al."Diverse Slip Behavior of the Banyak Islands Subsegment of the Sunda Megathrust in Sumatra, Indonesia".Journal of Geophysical Research: Solid Earth 125.11(2020).