气候变化领域集成服务门户(CCPortal): Aquifer deformation and active faulting in Salt Lake Valley, Utah, USA

CCPortal

DOI	10.1016/j.epsl.2020.116471
	Aquifer deformation and active faulting in Salt Lake Valley, Utah, USA
	Hu X.; Bürgmann R.
发表日期	2020
ISSN	0012821X
卷号	547
英文摘要	Aquifers and fault zones may interact through groundwater flow and stress redistribution, yet their spatiotemporal relationship remains enigmatic. Here we quantify changes in water storage and associated stress along the Wasatch Fault Zone in Salt Lake Valley, recently shaken by a M5.7 earthquake on March 18th, 2020. Ground deformation mapped by Sentinel-1 SAR imagery (2014-2019) reveals an elongated area with ∼50-mm seasonal uplift corresponding to 0.03-0.06-km3 water storage cycles. Phase shifts across active faults in both water level and deformation suggest control by the low-permeability structures. The seasonal stress changes on the adjoining faults from poroelastic volume strain are two orders of magnitude larger than those from hydrological surface loading, but both are small compared to the annual increase of tectonic loading at seismogenic depths. Historic seismic events, limited in number, do not exhibit statistically significant annual periodicity and hydrological modulation of microseismicity or triggering of the recent M5.7 event is not evident. © 2020 Elsevier B.V.
关键词	aquifer storage InSAR Salt Lake Valley (SLV)seasonal deformation seismic hazard volume strain
英文关键词	Aquifers; Deformation; Groundwater flow; Groundwater resources; Hydrogeology; Lakes; Water levels; Ground deformations; Low permeability; Orders of magnitude; Salt Lake Valley; Spatio-temporal relationships; Stress redistribution; Surface loading; Tectonic loading; Faulting; active fault; aquifer; deformation; earthquake event; fault zone; faulting; groundwater flow; microearthquake; permeability; poroelasticity; quantitative analysis; satellite imagery; Sentinel; synthetic aperture radar; Salt Lake Valley; United States; Utah
语种	英语
来源期刊	Earth and Planetary Science Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/202657
作者单位	Berkeley Seismological Laboratory, University of California, Berkeley, CA 94720-4760, United States; Department of Earth and Planetary Science, University of California, Berkeley, CA 94720-4767, United States
推荐引用方式 GB/T 7714	Hu X.,Bürgmann R.. Aquifer deformation and active faulting in Salt Lake Valley, Utah, USA[J],2020,547.
APA	Hu X.,&Bürgmann R..(2020).Aquifer deformation and active faulting in Salt Lake Valley, Utah, USA.Earth and Planetary Science Letters,547.
MLA	Hu X.,et al."Aquifer deformation and active faulting in Salt Lake Valley, Utah, USA".Earth and Planetary Science Letters 547(2020).