DOI: 10.1002/2015GL064377
论文题名: Isolated cases of remote dynamic triggering in Canada detected using cataloged earthquakes combined with a matched-filter approach
作者: Wang B. ; Harrington R.M. ; Liu Y. ; Yu H. ; Carey A. ; Van Der Elst N.J.
刊名: Geophysical Research Letters
ISSN: 0094-9256
EISSN: 1944-8987
出版年: 2015
卷: 42, 期: 13 起始页码: 5187
结束页码: 5196
语种: 英语
英文关键词: crustal earthquakes
; matched filter
; remote dynamic triggering
Scopus关键词: Matched filters
; Seismology
; Surface waves
; Continuous waveforms
; Crustal earthquakes
; Dynamic triggering
; Earthquake catalogs
; Filter approach
; Peak ground velocity
; Regional earthquakes
; Triggered Earthquakes
; Earthquakes
; earthquake catalogue
; earthquake trigger
; seismic zone
; shock wave
; surface wave
; waveform analysis
; Canada
英文摘要: Here we search for dynamically triggered earthquakes in Canada following global main shocks between 2004 and 2014 with MS >6, depth<100km, and estimated peak ground velocity>0.2cm/s. We use the Natural Resources Canada (NRCan) earthquake catalog to calculate β statistical values in 1°×1° bins in 10day windows before and after the main shocks. The statistical analysis suggests that triggering may occur near Vancouver Island, along the border of the Yukon and Northwest Territories, in western Alberta, western Ontario, and the Charlevoix seismic zone. We also search for triggering in Alberta where denser seismic station coverage renders regional earthquake catalogs with lower completeness thresholds. We find remote triggering in Alberta associated with three main shocks using a matched-filter approach on continuous waveform data. The increased number of local earthquakes following the passage of main shock surface waves suggests local faults may be in a critically stressed state. Key Points Dynamic triggering occurs in Canada and in Alberta near injection sites Triggering stresses of < 1kPa triggered earthquakes near injection sites Long-period shaking may be more effective at remote triggering. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938211309&doi=10.1002%2f2015GL064377&partnerID=40&md5=3f371505bc2c0f48caa066a5943fd0a7
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8872
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 and Planetary Sciences, McGill University, Montreal, QC, Canada
Recommended Citation:
Wang B.,Harrington R.M.,Liu Y.,et al. Isolated cases of remote dynamic triggering in Canada detected using cataloged earthquakes combined with a matched-filter approach[J]. Geophysical Research Letters,2015-01-01,42(13).