DOI: 10.1002/2016GL069750
论文题名: Very low frequency earthquakes spatiotemporally asynchronous with strong tremor during the 2014 episodic tremor and slip event in Cascadia
作者: Hutchison A.A. ; Ghosh A.
刊名: Geophysical Research Letters
ISSN: 0094-8899
EISSN: 1944-8630
出版年: 2016
卷: 43, 期: 13 起始页码: 6876
结束页码: 6882
语种: 英语
英文关键词: episodic tremor and slip
; ETS
; slow earthquakes
; tremor
; very low frequency earthquakes
Scopus关键词: Geophysics
; Seismology
; Centroid moment tensors
; Different sizes
; Episodic tremor and slip
; Spatio-temporal relationships
; Stress loading
; Strong tremors
; Tremor
; Very low frequency
; Earthquakes
英文摘要: We find very low frequency earthquakes (VLFEs) in Cascadia during the 2014 episodic tremor and slip event under Washington and Vancouver Island using a grid search centroid moment tensor inversion method. The very low frequency earthquakes occur when and where there is no strong tremor detected, contrasting with previous findings where tremor and very low frequency earthquakes have a clear spatiotemporal relationship. This challenges our current understanding of the dynamic relationship between the different types of slow earthquakes and their relationship to slow slip. We interpret these findings to suggest that VLFEs and tremor may have their own “seismic cycles,” resulting from asperities of different sizes or characteristics that respond pseudo-independently to stress loading. We propose that very low frequency earthquakes and tremor are subject to asynchronous seismic cycles. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84978196531&doi=10.1002%2f2016GL069750&partnerID=40&md5=d7c2dacbf91d053999e47ec19af1b8a1
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9862
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: University of California, Riverside, CA, United States
Recommended Citation:
Hutchison A.A.,Ghosh A.. Very low frequency earthquakes spatiotemporally asynchronous with strong tremor during the 2014 episodic tremor and slip event in Cascadia[J]. Geophysical Research Letters,2016-01-01,43(13).