globalchange  > 气候减缓与适应
DOI: 10.1038/ngeo2817
论文题名:
Triggering of the 2014 Mw 7.3 Papanoa earthquake by a slow slip event in Guerrero, Mexico
作者: Radiguet M.; Perfettini H.; Cotte N.; Gualandi A.; Valette B.; Kostoglodov V.; Lhomme T.; Walpersdorf A.; Cabral Cano E.; Campillo M.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2016
卷: 9, 期:11
起始页码: 829
结束页码: 833
语种: 英语
Scopus关键词: crustal evolution ; earthquake event ; earthquake hypocenter ; earthquake magnitude ; earthquake trigger ; GPS ; strain analysis ; strike-slip fault ; subduction zone ; time series analysis ; Guerrero ; Mexico [North America]
英文摘要: Since their discovery two decades ago, slow slip events have been shown to play an important role in accommodating strain in subduction zones. However, the physical mechanisms that generate slow slip and the relationships with earthquakes are unclear. Slow slip events have been recorded in the Guerrero segment of the Cocos-North America subduction zone. Here we use inversion of position time series recorded by a continuous GPS network to reconstruct the evolution of aseismic slip on the subduction interface of the Guerrero segment. We find that a slow slip event began in February 2014, two months before the magnitude (Mw) 7.3 Papanoa earthquake on 18 April. The slow slip event initiated in a region adjacent to the earthquake hypocentre and extended into the vicinity of the seismogenic zone. This spatio-temporal proximity strongly suggests that the Papanoa earthquake was triggered by the ongoing slow slip event. We demonstrate that the triggering mechanism could be either static stress increases in the hypocentral region, as revealed by Coulomb stress modelling, or enhanced weakening of the earthquake hypocentral area by the slow slip. We also show that the plate interface in the Guerrero area is highly coupled between slow slip events, and that most of the accumulated strain is released aseismically during the slow slip episodes. © 2016 Macmillan Publishers Limited, part of Springer Nature. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/105898
Appears in Collections:气候减缓与适应
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作者单位: Université Grenoble Alpes, CNRS, IRD, ISTerre, Grenoble, France; Settore di Geofisica, Dipartimento di Fisica e Astronomia, Università di Bologna, Bologna, Italy; Istituto Nazionale di Geofisica e Vulcanologia (INGV), Section of Bologna, Bologna, Italy; Université de Savoie Mont-Blanc, IRD, ISTerre, Le Bourget du Lac, France; Instituto de Geofísica, Universidad Nacional Autónoma de México, Ciudad de México, Mexico; Departamento de Geomagnetismo y Exploración, Instituto de Geofísica, Universidad Nacional Autónoma de Mevxico, Ciudad de México, Mexico; California Institute of Technology, Department of Geology and Planetary Sciences, Pasadena, CA, United States

Recommended Citation:
Radiguet M.,Perfettini H.,Cotte N.,et al. Triggering of the 2014 Mw 7.3 Papanoa earthquake by a slow slip event in Guerrero, Mexico[J]. Nature Geoscience,2016-01-01,9(11)
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