DOI: 10.1002/2015GL066082
论文题名: Deterministic model of earthquake clustering shows reduced stress drops for nearby aftershocks
作者: Shaw B.E. ; Richards-Dinger K. ; Dieterich J.H.
刊名: Geophysical Research Letters
ISSN: 0094-8446
EISSN: 1944-8177
出版年: 2015
卷: 42, 期: 21 起始页码: 9231
结束页码: 9238
语种: 英语
英文关键词: aftershocks
; earthquake clustering
; ground motion
; rate and state friction
; spatial dependence
; stress drops
Scopus关键词: Drops
; Earthquake effects
; Geophysics
; Aftershocks
; Earthquake clustering
; Ground motions
; Rate and state friction
; Spatial dependence
; Stress drop
; Earthquakes
; aftershock
; cluster analysis
; earthquake event
; earthquake magnitude
; earthquake rupture
; ground motion
; model test
; spatiotemporal analysis
; stress change
英文摘要: While a number of viable physical mechanisms have been offered to explain the temporal clustering of aftershocks, the spatial clustering of aftershocks, in particular the concentrated productivity of aftershocks very near the mainshock rupture area, has been difficult to reproduce with physical models. Here we present a new deterministic physical model capable of reproducing both the spatial and temporal clustering. We apply this new model to a longstanding puzzling question raised by ground motion observations, which suggest that nearby aftershocks show reduced ground motions relative to similar magnitude mainshocks. In the model, the physical basis for these observations is reduced stress drops for nearby aftershocks compared to similar magnitude mainshocks. These reduced stress drops are due to nearby aftershocks rerupturing incompletely healed parts of the fault which ruptured in the mainshock. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84955187735&doi=10.1002%2f2015GL066082&partnerID=40&md5=bb0c4437db478d7f3b4604082d6c8211
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8062
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: Lamont Doherty Earth Observatory, Columbia University, Palisades, NY, United States
Recommended Citation:
Shaw B.E.,Richards-Dinger K.,Dieterich J.H.. Deterministic model of earthquake clustering shows reduced stress drops for nearby aftershocks[J]. Geophysical Research Letters,2015-01-01,42(21).