DOI: 10.1002/grl.50220
论文题名: Tremors along the Queen Charlotte Margin triggered by large teleseismic earthquakes
作者: Aiken C. ; Peng Z. ; Chao K.
刊名: Geophysical Research Letters
ISSN: 0094-9248
EISSN: 1944-8979
出版年: 2013
卷: 40, 期: 5 起始页码: 829
结束页码: 834
语种: 英语
英文关键词: dynamic triggering
; transpressive
Scopus关键词: Dynamic triggering
; High frequency signals
; Particle velocities
; Sumatra earthquakes
; Systematic searches
; Teleseismic earthquakes
; Tohoku-Oki earthquakes
; transpressive
; Faulting
; Surface waves
; Earthquakes
; amplitude
; Chile earthquake 2010
; correlation
; earthquake
; earthquake epicenter
; fault zone
; Rayleigh wave
; seismic wave
; Sumatra earthquake 2004
; teleseismic wave
; Tohoku earthquake 2011
; British Columbia
; Canada
; Chile
; Maule
; Pacific Ocean
; Queen Charlotte Basin
; Queen Charlotte Islands
英文摘要: We conduct a systematic search of tectonic tremors along the Queen Charlotte Margin (QCM) in western Canada triggered by distant earthquakes. We identify triggered tremor as non-impulsive, high-frequency signals coherent among several stations and coincident with passing surface waves. So far, the 2002 Mw7.9 Denali Fault, the 2004 Mw9.2 Sumatra, and the 2011 Mw9.1 Tohoku-Oki earthquakes have triggered clear tremor in this region. The 2010 Mw8.8 Maule, Chile and the 2012 Mw8.6 Sumatra earthquakes may have triggered, but tremors in these two cases did not meet all of our criteria. The triggered tremors are mostly located east of the Queen Charlotte Fault in the southern portion of Haida Gwaii, near the epicenter of the 28 October 2012 Mw7.7 earthquake. Similar to the observations in other regions, the triggered tremors were initiated by the Love waves and continued during the subsequent Rayleigh waves. Tremor bursts correlate with both the particle velocity and displacement of the Love waves, indicating they are triggered at either low-angle thrust or vertical strike-slip faults. In addition, we find that the triggering potential for the QCM is controlled by a combination of amplitude, period, and incident angles. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84876789752&doi=10.1002%2fgrl.50220&partnerID=40&md5=63287e09e8f043293fa414faa67480a5
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6512
Appears in Collections: 气候减缓与适应
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作者单位: School of Earth and Atmospheric Sciences, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, GA 30332, United States
Recommended Citation:
Aiken C.,Peng Z.,Chao K.. Tremors along the Queen Charlotte Margin triggered by large teleseismic earthquakes[J]. Geophysical Research Letters,2013-01-01,40(5).