DOI: 10.1002/2016GL069969
论文题名: Dynamic triggering of small local earthquakes in the central Himalaya
作者: Mendoza M.M. ; Ghosh A. ; Rai S.S.
刊名: Geophysical Research Letters
ISSN: 0094-8633
EISSN: 1944-8364
出版年: 2016
卷: 43, 期: 18 起始页码: 9581
结束页码: 9587
语种: 英语
英文关键词: dynamic triggering
; Himalaya
; Kumaon-Garhwal
; remote triggering
; self-sustained triggering
; slow slip
Scopus关键词: Geophysics
; Seismic waves
; Surface waves
; Dynamic triggering
; Himalayas
; Kumaon-Garhwal
; Remote triggering
; Self-sustained triggering
; Slow slip
; Earthquakes
英文摘要: We present the first observation of remote dynamic triggering of local microearthquakes in central Himalaya caused by the teleseismic waves from the 2007 Mw 8.5 Sumatra earthquake that occurs ~4500 km away. We find small local earthquakes in the Kumaon-Garhwal Himalaya triggered by teleseismic long-period surface waves. Interestingly, an elevated level of seismicity persists for a week or so after the arrival of the teleseismic waves. The teleseismic waves impart ~9 kPa of peak dynamic stresses, suggesting that the Himalayan faults in this area are sensitive to small stress changes. This heightened and protracted seismicity indicates that the transient dynamic stresses may have triggered secondary processes, such as slow slip, that may be responsible for the persistence of this earthquake sequence. The region is thought to be close to a large damaging earthquake in the near future. This study provides improved constraints on the factors controlling the earthquake cycle. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84989299914&doi=10.1002%2f2016GL069969&partnerID=40&md5=e5f4f52f78539f20febff74e53a1255e
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9596
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: Department of Earth Sciences, University of California, Riverside, CA, United States
Recommended Citation:
Mendoza M.M.,Ghosh A.,Rai S.S.. Dynamic triggering of small local earthquakes in the central Himalaya[J]. Geophysical Research Letters,2016-01-01,43(18).