气候变化领域集成服务门户(CCPortal): Mechanical Response of Shallow Crust to Groundwater Storage Variations: Inferences From Deformation and Seismic Observations in the Eastern Southern Alps, Italy

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DOI	10.1029/2020JB020586
	Mechanical Response of Shallow Crust to Groundwater Storage Variations: Inferences From Deformation and Seismic Observations in the Eastern Southern Alps, Italy
	Pintori F.; Serpelloni E.; Longuevergne L.; Garcia A.; Faenza L.; D'Alberto L.; Gualandi A.; Belardinelli M.E.
发表日期	2021
ISSN	21699313
卷号	126 期号:2
英文摘要	Changes in continental water storage generate vertical surface deformation, induce crustal stress perturbations, and modulate seismicity rates. However, the degree to which regional changes in terrestrial water content influence crustal stresses and the occurrence of earthquakes remains an open problem. We show how changes in groundwater storage, computed for a ∼1,000 km2 basin, focus deformation in a narrow zone, causing large horizontal, nonseasonal displacements. We present results from a karstic mountain range located at the edge of the Adria-Eurasia plate boundary system in Northern Italy, where shortening is accommodated across an active fold-and-thrust belt. The presence of geological structures with high permeabilities and of deeply rooted hydrologically active fractures focus groundwater fluxes and pressure changes, generating transient surface horizontal displacements up to 5 mm and perturbations of crustal stress up to 25 kPa at seismogenic depths. The background seismicity rates appear correlated, without evident temporal delay, with groundwater storage changes in the hydrological basin. With no evidence of pore pressure propagation from the hydrologically active fractures, seismicity modulation is likely affected by direct stress changes on faults planes. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	Alps; GNSS; hydrology; nontectonic deformation; seismicity rates; stress changes
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/187341
作者单位	Istituto Nazionale di Geofisica e Vulcanologia, Bologna, Italy; Dipartimento di Fisica e Astronomia, Settore di Geofisica, Università di Bologna, Bologna, Italy; Univ Rennes, CNRS, Geosciences Rennes, Rennes, France; ARPA Veneto, Inland Waters Office, Padova, Italy; Department of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, United States
推荐引用方式 GB/T 7714	Pintori F.,Serpelloni E.,Longuevergne L.,et al. Mechanical Response of Shallow Crust to Groundwater Storage Variations: Inferences From Deformation and Seismic Observations in the Eastern Southern Alps, Italy[J],2021,126(2).
APA	Pintori F..,Serpelloni E..,Longuevergne L..,Garcia A..,Faenza L..,...&Belardinelli M.E..(2021).Mechanical Response of Shallow Crust to Groundwater Storage Variations: Inferences From Deformation and Seismic Observations in the Eastern Southern Alps, Italy.Journal of Geophysical Research: Solid Earth,126(2).
MLA	Pintori F.,et al."Mechanical Response of Shallow Crust to Groundwater Storage Variations: Inferences From Deformation and Seismic Observations in the Eastern Southern Alps, Italy".Journal of Geophysical Research: Solid Earth 126.2(2021).