Damage Localization, Sensitivity of Energy Release and the Catastrophe Transition

CORC > 力学研究所 > 中国科学院力学研究所 > 力学所知识产出(1956-2008)

	Damage Localization, Sensitivity of Energy Release and the Catastrophe Transition
	Li HL(李晖凌); Jia ZK; Bai YL(白以龙); Xia MF(夏梦棼); Ke FJ(柯孚久)
刊名	Pure and Applied Geophysics
	2002
卷号	159 期号:9 页码:1933-1950
ISSN号	0033-4553
通讯作者	Li, HL (reprint author), Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100080, Peoples R China.
英文摘要	Large earthquakes can be viewed as catastrophic ruptures in the earth’s crust. There are two common features prior to the catastrophe transition in heterogeneous media. One is damage localization and the other is critical sensitivity; both of which are related to a cascade of damage coalescence. In this paper, in an attempt to reveal the physics underlying the catastrophe transition, analytic analysis based on mean-field approximation of a heterogeneous medium as well as numerical simulations using a network model are presented. Both the emergence of damage localization and the sensitivity of energy release are examined to explore the inherent statistical precursors prior to the eventual catastrophic rupture. Emergence of damage localization, as predicted by the mean-field analysis, is consistent with observations of the evolution of damage patterns. It is confirmed that precursors can be extracted from the time-series of energy release according to its sensitivity to increasing crustal stress. As a major result, present research indicates that the catastrophe transition and the critical point hypothesis (CPH) of earthquakes are interrelated. The results suggest there may be two cross-checking precursors of large earthquakes: damage localization and critical sensitivity.
学科主题	力学
类目[WOS]	Geochemistry & Geophysics
研究领域[WOS]	Geochemistry & Geophysics
关键词[WOS]	CRITICAL-POINT ; FAILURE ; EVOLUTION ; BEHAVIOR ; MODEL
收录类别	SCI
语种	英语
WOS记录号	WOS:000177662900003
公开日期	2007-06-15 ; 2007-12-05 ; 2009-06-23
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/17465]
专题	力学研究所_力学所知识产出(1956-2008)
推荐引用方式 GB/T 7714	Li HL,Jia ZK,Bai YL,et al. Damage Localization, Sensitivity of Energy Release and the Catastrophe Transition[J]. Pure and Applied Geophysics,2002,159(9):1933-1950.
APA	李晖凌,Jia ZK,白以龙,夏梦棼,&柯孚久.(2002).Damage Localization, Sensitivity of Energy Release and the Catastrophe Transition.Pure and Applied Geophysics,159(9),1933-1950.
MLA	李晖凌,et al."Damage Localization, Sensitivity of Energy Release and the Catastrophe Transition".Pure and Applied Geophysics 159.9(2002):1933-1950.