气候变化领域集成服务门户(CCPortal): Rheological Transitions Facilitate Fault-Spanning Ruptures on Seismically Active and Creeping Faults

CCPortal

DOI	10.1029/2019JB019328
	Rheological Transitions Facilitate Fault-Spanning Ruptures on Seismically Active and Creeping Faults
	van den Ende M.P.A.; Chen J.; Niemeijer A.R.; Ampuero J.-P.
发表日期	2020
ISSN	21699313
卷号	125 期号:8
英文摘要	Physical constraints on the seismogenic potential of major fault zones may aid in improving seismic hazard assessments, but the mechanics of earthquake nucleation and rupture are obscured by the complexity that faults display. In this work, we investigate the mechanisms behind giant earthquakes by employing a microphysically based seismic cycle simulator. This microphysical approach is directly based on the mechanics of friction as inferred from laboratory tests and can explain a broad spectrum of fault slip behavior. We show that regular earthquakes are controlled by the size and distribution of (nominally) frictionally unstable asperities, whereas fault-spanning earthquakes are governed by a rheological transition occurring in creeping fault segments. Moreover, this facilitates the nucleation of giant earthquakes on faults that are weakly seismically coupled (i.e., creeping). This microphysically based approach offers opportunities for investigating long-term seismic cycle behavior of natural faults. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	fault heterogeneity; microphysical modeling; seismic cycle simulations
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187728
作者单位	Université Côte d'Azur, IRD, CNRS, Observatoire de la Côte d'Azur, Géoazur, Valbonne, France; High Pressure and Temperature Laboratory, Department of Earth Sciences, Utrecht University, Netherlands; Now at Geoscience and Engineering Department, Delft University of Technology, Delft, Netherlands; Seismological Laboratory, California Institute of Technology, Pasadena, CA, United States
推荐引用方式 GB/T 7714	van den Ende M.P.A.,Chen J.,Niemeijer A.R.,et al. Rheological Transitions Facilitate Fault-Spanning Ruptures on Seismically Active and Creeping Faults[J],2020,125(8).
APA	van den Ende M.P.A.,Chen J.,Niemeijer A.R.,&Ampuero J.-P..(2020).Rheological Transitions Facilitate Fault-Spanning Ruptures on Seismically Active and Creeping Faults.Journal of Geophysical Research: Solid Earth,125(8).
MLA	van den Ende M.P.A.,et al."Rheological Transitions Facilitate Fault-Spanning Ruptures on Seismically Active and Creeping Faults".Journal of Geophysical Research: Solid Earth 125.8(2020).