DOI: 10.1002/2015GL064363
论文题名: Low-frequency earthquakes at the southern Cascadia margin
作者: Plourde A.P. ; Bostock M.G. ; Audet P. ; Thomas A.M.
刊名: Geophysical Research Letters
ISSN: 0094-8692
EISSN: 1944-8423
出版年: 2015
卷: 42, 期: 12 起始页码: 4849
结束页码: 4855
语种: 英语
英文关键词: low-frequency earthquake
; tectonic tremor
Scopus关键词: Faulting
; Geophysics
; Seismology
; Waveform analysis
; Cross correlations
; Fault zone
; Iterative networks
; Low-frequency earthquakes
; Plate interfaces
; Seismic waveforms
; Shallow earthquakes
; Tectonic tremors
; Earthquakes
; earthquake epicenter
; earthquake magnitude
; earthquake swarm
; fault zone
; interface
; seismicity
; spatiotemporal analysis
; strike-slip fault
; wave propagation
; waveform analysis
; California
; Cascadia Margin
; Pacific Ocean
; United States
英文摘要: We use seismic waveform data from the Mendocino Experiment to detect low-frequency earthquakes (LFEs) beneath Northern California during the April 2008 tremor-and-slip episode. In southern Cascadia, 59 templates were generated using iterative network cross correlation and stacking and grouped into 34 distinct LFE families. The main front of tremor epicenters migrates along strike at 9 km d-1; we also find one instance of rapid tremor reversal, observed to propagate in the opposite direction at 10-20 km h-1. As in other regions of Cascadia, LFE hypocenters from this study lie several kilometers above a recent plate interface model. South of Cascadia, LFEs were discovered on the Maacama and Bucknell Creek faults. The Bucknell Creek Fault may be the youngest fault yet observed to host LFEs. These fault zones also host shallow earthquake swarms with repeating events that are distinct from LFEs in their spectral and recurrence characteristics. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84948717612&doi=10.1002%2f2015GL064363&partnerID=40&md5=41e87c4562fca7061490230194537dba
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8308
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, Ocean, and Atmospheric Sciences, University of British Columbia, Vancouver, BC, Canada
Recommended Citation:
Plourde A.P.,Bostock M.G.,Audet P.,et al. Low-frequency earthquakes at the southern Cascadia margin[J]. Geophysical Research Letters,2015-01-01,42(12).