气候变化领域集成服务门户(CCPortal): Interseismic Loading of Subduction Megathrust Drives Long-Term Uplift in Northern Chile

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DOI	10.1029/2019GL085377
	Interseismic Loading of Subduction Megathrust Drives Long-Term Uplift in Northern Chile
	Jolivet R.; Simons M.; Duputel Z.; Olive J.-A.; Bhat H.S.; Bletery Q.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:8
英文摘要	Large earthquakes are the product of elastic stress that has accumulated over decades to centuries along segments of active faults. Assuming an elastic crust, one can roughly estimate the location and rate of accumulation of elastic stress. However, this general framework does not account for inelastic, irrecoverable deformation, which results in large-scale topography. We do not know over which part of the earthquake cycle such deformation occurs. Using InSAR and GNSS measurements, we report on a potential correlation between long-term, inelastic vertical rate and short-term, interseismic vertical rate in northern Chile. Approximately 4% to 8% of the geodetically derived interseismic vertical rates translate into permanent deformation, suggesting that topography of the forearc builds up during the interseismic period. This observation provides a quantitative basis for an improved understanding of the interplay between short-term and long-term dynamics along convergent plate boundaries. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Deformation; Earthquakes; Topography; Convergent plate boundaries; Earthquake cycles; Elastic stress; Inter-seismic periods; Large earthquakes; Long term dynamics; Northern Chile; Permanent deformations; Faulting; active fault; convergent margin; deformation mechanism; elastic property; GNSS; loading; long-term change; plate convergence; subduction zone; thrust; topography; uplift; Chile
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170452
作者单位	Laboratoire de Géologie, Département de Géosciences, École Normale Supérieure, PSL Université, CNRS UMR 8538, Paris, France; Institut Universitaire de France, Paris, France; Seismological Laboratory, California Institute of Technology, Pasadena, CA, United States; Institut de Physique du Globe de Strasbourg, Université de Strasbourg/EOST, CNRS UMR 7516, Strasbourg, France; Université Côte d'Azur, IRD, CNRS, Observatoire de la Côte d'Azur, Géoazur, Sophia Antipolis, France
推荐引用方式 GB/T 7714	Jolivet R.,Simons M.,Duputel Z.,et al. Interseismic Loading of Subduction Megathrust Drives Long-Term Uplift in Northern Chile[J],2020,47(8).
APA	Jolivet R.,Simons M.,Duputel Z.,Olive J.-A.,Bhat H.S.,&Bletery Q..(2020).Interseismic Loading of Subduction Megathrust Drives Long-Term Uplift in Northern Chile.Geophysical Research Letters,47(8).
MLA	Jolivet R.,et al."Interseismic Loading of Subduction Megathrust Drives Long-Term Uplift in Northern Chile".Geophysical Research Letters 47.8(2020).