GSTDTAP  > 气候变化
DOI10.1002/2017GL074934
Do weak global stresses synchronize earthquakes?
Bendick, R.1; Bilham, R.2
2017-08-28
发表期刊GEOPHYSICAL RESEARCH LETTERS
ISSN0094-8276
EISSN1944-8007
出版年2017
卷号44期号:16
文章类型Article
语种英语
国家USA
英文摘要

Insofar as slip in an earthquake is related to the strain accumulated near a fault since a previous earthquake, and this process repeats many times, the earthquake cycle approximates an autonomous oscillator. Its asymmetric slow accumulation of strain and rapid release is quite unlike the harmonic motion of a pendulum and need not be time predictable, but still resembles a class of repeating systems known as integrate-and-fire oscillators, whose behavior has been shown to demonstrate a remarkable ability to synchronize to either external or self-organized forcing. Given sufficient time and even very weak physical coupling, the phases of sets of such oscillators, with similar though not necessarily identical period, approach each other. Topological and time series analyses presented here demonstrate that earthquakes worldwide show evidence of such synchronization. Though numerous studies demonstrate that the composite temporal distribution of major earthquakes in the instrumental record is indistinguishable from random, the additional consideration of event renewal interval serves to identify earthquake groupings suggestive of synchronization that are absent in synthetic catalogs. We envisage the weak forces responsible for clustering originate from lithospheric strain induced by seismicity itself, by finite strains over teleseismic distances, or by other sources of lithospheric loading such as Earth's variable rotation. For example, quasi-periodic maxima in rotational deceleration are accompanied by increased global seismicity at multidecadal intervals.


Plain Language Summary Large earthquakes appear to synchronize globally, in the sense that they are organized in time according to their renewal properties, and occur in groups in response to very low stress interactions.


英文关键词global earthquakes synchronization clustering Earth rotation
领域气候变化
收录类别SCI-E
WOS记录号WOS:000410658800028
WOS关键词OSCILLATORS ; MOMENT ; MODEL
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/29145
专题气候变化
作者单位1.Univ Montana, Missoula, MT 59812 USA;
2.Univ Colorado, CIRES, Boulder, CO 80309 USA
推荐引用方式
GB/T 7714
Bendick, R.,Bilham, R.. Do weak global stresses synchronize earthquakes?[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(16).
APA Bendick, R.,&Bilham, R..(2017).Do weak global stresses synchronize earthquakes?.GEOPHYSICAL RESEARCH LETTERS,44(16).
MLA Bendick, R.,et al."Do weak global stresses synchronize earthquakes?".GEOPHYSICAL RESEARCH LETTERS 44.16(2017).
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