气候变化领域集成服务门户(CCPortal): Mysterious tsunami in the Caribbean Sea following the 2010 Haiti earthquake possibly generated by dynamically triggered early aftershocks

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DOI	10.1016/j.epsl.2020.116269
	Mysterious tsunami in the Caribbean Sea following the 2010 Haiti earthquake possibly generated by dynamically triggered early aftershocks
	ten Brink U.; Wei Y.; Fan W.; Granja-Bruña J.-L.; Miller N.
发表日期	2020
ISSN	0012821X
卷号	540
英文摘要	Dynamically triggered offshore aftershocks, caused by passing seismic waves from main shocks located on land, are currently not considered in tsunami warnings. The M7.0 2010 Haiti earthquake epicenter was located on land 27 km north of the Caribbean Sea and its focal mechanism was oblique strike-slip. Nevertheless, a tsunami recorded on a Caribbean Deep-Ocean Assessment and Reporting of Tsunami (DART) buoy and a tide gauge produced runup heights of 1–3 m along Haiti southeast coast. Earthquake finite-fault model inversions of the DART waveform suggest that a reverse fault doublet with magnitudes of M6.8 and M6.5 located 85 km southwest of the epicenter may have excited the tsunami. This doublet collocates with dynamically triggered aftershocks, derived from back-projection analysis, that occurred 20-60 s after the main shock of the Haiti earthquake. The aftershocks are within a region of maximum dynamic strain predicted by the main shock, on a possibly tectonically active submarine ridge southwest of Haiti's Southern Peninsula. The agreement between the tsunami finite-fault source models and the seismic and tectonic evidence suggests that earthquakes on land, even strike-slip faults, can generate tsunamis by dynamically triggering offshore aftershocks. © 2020
关键词	DART buoy dynamically-triggered aftershocks instantaneous aftershocks tsunami from land-based earthquake tsunami from strike-slip earthquake tsunami warning protocol
英文关键词	Fault slips; Offshore oil well production; Strike-slip faults; Tide gages; Tsunamis; Back projection; Deep ocean assessment and reporting of tsunamis; Finite fault modeling; Finite fault source model; Focal mechanism; Haiti earthquakes; Run-up heights; Tsunami warning; Earthquakes; aftershock; earthquake epicenter; focal mechanism; Haiti earthquake 2010; seismic wave; strike-slip fault; tsunami; Atlantic Ocean; Caribbean Sea; Haiti; Hispaniola
语种	英语
来源期刊	Earth and Planetary Science Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/202930
作者单位	USGS, Woods Hole, MA 02543, United States; JISAO, University of WashingtonWA 98105, United States; NOAA-PMEL, Seattle, WA 98115, United States; Florida State University, Tallahassee, FL 32306, United States; Universidad Complutense de Madrid, Madrid, Spain
推荐引用方式 GB/T 7714	ten Brink U.,Wei Y.,Fan W.,et al. Mysterious tsunami in the Caribbean Sea following the 2010 Haiti earthquake possibly generated by dynamically triggered early aftershocks[J],2020,540.
APA	ten Brink U.,Wei Y.,Fan W.,Granja-Bruña J.-L.,&Miller N..(2020).Mysterious tsunami in the Caribbean Sea following the 2010 Haiti earthquake possibly generated by dynamically triggered early aftershocks.Earth and Planetary Science Letters,540.
MLA	ten Brink U.,et al."Mysterious tsunami in the Caribbean Sea following the 2010 Haiti earthquake possibly generated by dynamically triggered early aftershocks".Earth and Planetary Science Letters 540(2020).