气候变化领域集成服务门户(CCPortal): Structural Control on Megathrust Rupture and Slip Behavior: Insights From the 2016 Mw 7.8 Pedernales Ecuador Earthquake

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DOI	10.1029/2019JB018001
	Structural Control on Megathrust Rupture and Slip Behavior: Insights From the 2016 Mw 7.8 Pedernales Ecuador Earthquake
	Soto-Cordero L.; Meltzer A.; Bergman E.; Hoskins M.; Stachnik J.C.; Agurto-Detzel H.; Alvarado A.; Beck S.; Charvis P.; Font Y.; Hayes G.P.; Hernandez S.; Lynner C.; Leon-Rios S.; Nocquet J.-M.; Regnier M.; Rietbrock A.; Rolandone F.; Ruiz M.
发表日期	2020
ISSN	21699313
卷号	125 期号:2
英文摘要	The heterogeneous seafloor topography of the Nazca Plate as it enters the Ecuador subduction zone provides an opportunity to document the influence of seafloor roughness on slip behavior and megathrust rupture. The 2016 Mw 7.8 Pedernales Ecuador earthquake was followed by a rich and active postseismic sequence. An internationally coordinated rapid response effort installed a temporary seismic network to densify coastal stations of the permanent Ecuadorian national seismic network. A combination of 82 onshore short and intermediate period and broadband seismic stations and six ocean bottom seismometers recorded the postseismic Pedernales sequence for over a year after the mainshock. A robust earthquake catalog combined with calibrated relocations for a subset of magnitude ≥4 earthquakes shows pronounced spatial and temporal clustering. A range of slip behavior accommodates postseismic deformation including earthquakes, slow slip events, and earthquake swarms. Models of plate coupling and the consistency of earthquake clustering and slip behavior through multiple seismic cycles reveal a segmented subduction zone primarily controlled by subducted seafloor topography, accreted terranes, and inherited structure. The 2016 Pedernales mainshock triggered moderate to strong earthquakes (5 ≤ M ≤ 7) and earthquake swarms north of the mainshock rupture close to the epicenter of the 1906 Mw 8.8 earthquake and in the segment of the subduction zone that ruptured in 1958 in a Mw 7.7 earthquake. ©2020. The Authors.
英文关键词	aftershock sequence; megathrust rupture; subduction zone earthquakes
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/187996
作者单位	Department of Earth and Environmental Sciences, Lehigh University, Bethlehem, PA, United States; Global Seismological Services, Golden, CO, United States; Université Côte d'Azur IRD, Géoazur, IRD, Nice, France; Instituto Geofísico at the Escuela Politécnica Nacional, Quito, Ecuador; Department of Geosciences, University of Arizona, Tucson, AZ, United States; National Earthquake Information Center, U.S. Geological Survey, Golden, CO, United States; Now at Department of Earth Sciences, University of Delaware, Newark, DE, United States; Geophysical Institute, Karlsruhe Institute of Technology, Karlsruhe, Germany; Sorbonne Université, CNRS-INSU, Institut des Sciences de la Terre Paris, Paris, France
推荐引用方式 GB/T 7714	Soto-Cordero L.,Meltzer A.,Bergman E.,et al. Structural Control on Megathrust Rupture and Slip Behavior: Insights From the 2016 Mw 7.8 Pedernales Ecuador Earthquake[J],2020,125(2).
APA	Soto-Cordero L..,Meltzer A..,Bergman E..,Hoskins M..,Stachnik J.C..,...&Ruiz M..(2020).Structural Control on Megathrust Rupture and Slip Behavior: Insights From the 2016 Mw 7.8 Pedernales Ecuador Earthquake.Journal of Geophysical Research: Solid Earth,125(2).
MLA	Soto-Cordero L.,et al."Structural Control on Megathrust Rupture and Slip Behavior: Insights From the 2016 Mw 7.8 Pedernales Ecuador Earthquake".Journal of Geophysical Research: Solid Earth 125.2(2020).