globalchange  > 气候变化与战略
DOI: 10.1016/j.epsl.2020.116269
论文题名:
Mysterious tsunami in the Caribbean Sea following the 2010 Haiti earthquake possibly generated by dynamically triggered early aftershocks
作者: ten Brink U.; Wei Y.; Fan W.; Granja-Bruña J.-L.; Miller N.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2020
卷: 540
语种: 英语
中文关键词: 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
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
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/165308
Appears in Collections:气候变化与战略

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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

Recommended Citation:
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]. Earth and Planetary Science Letters,2020-01-01,540
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