DOI: 10.1002/2015GL066963
论文题名: The 2015 Illapel earthquake, central Chile: A type case for a characteristic earthquake?
作者: Tilmann F. ; Zhang Y. ; Moreno M. ; Saul J. ; Eckelmann F. ; Palo M. ; Deng Z. ; Babeyko A. ; Chen K. ; Baez J.C. ; Schurr B. ; Wang R. ; Dahm T.
刊名: Geophysical Research Letters
ISSN: 0094-9447
EISSN: 1944-9178
出版年: 2016
卷: 43, 期: 2 起始页码: 574
结束页码: 583
语种: 英语
英文关键词: aftershocks
; backprojection
; characteristic earthquake
; Chile
; finite fault model
; Illapel earthquake
Scopus关键词: Geophysics
; Seismology
; Aftershock sequence
; Aftershocks
; Back-projection
; Chile
; Finite fault modeling
; Megathrust earthquakes
; Seismic waveforms
; Source time functions
; Earthquakes
; aftershock
; deep sea
; displacement
; earthquake event
; earthquake rupture
; electromagnetic wave
; hazard assessment
; numerical model
; seismic hazard
; seismic source
; slip rate
; subduction zone
; teleseismic wave
; thrust fault
; tsunami
; wave propagation
; Chile
英文摘要: On 16 September 2015, the MW = 8.2 Illapel megathrust earthquake ruptured the Central Chilean margin. Combining inversions of displacement measurements and seismic waveforms with high frequency (HF) teleseismic backprojection, we derive a comprehensive description of the rupture, which also predicts deep ocean tsunami wave heights. We further determine moment tensors and obtain accurate depth estimates for the aftershock sequence. The earthquake nucleated near the coast but then propagated to the north and updip, attaining a peak slip of 5-6 m. In contrast, HF seismic radiation is mostly emitted downdip of the region of intense slip and arrests earlier than the long period rupture, indicating smooth slip along the shallow plate interface in the final phase. A superficially similar earthquake in 1943 with a similar aftershock zone had a much shorter source time function, which matches the duration of HF seismic radiation in the recent event, indicating that the 1943 event lacked the shallow slip. © 2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84961285934&doi=10.1002%2f2015GL066963&partnerID=40&md5=5f753e50c990387f632e76df3049a84e
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10410
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Deutsches GeoForschungsZentrum GFZ, Potsdam, Germany
Recommended Citation:
Tilmann F.,Zhang Y.,Moreno M.,et al. The 2015 Illapel earthquake, central Chile: A type case for a characteristic earthquake?[J]. Geophysical Research Letters,2016-01-01,43(2).