globalchange  > 气候变化与战略
DOI: 10.1016/j.epsl.2020.116471
论文题名:
Aquifer deformation and active faulting in Salt Lake Valley, Utah, USA
作者: Hu X.; Bürgmann R.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2020
卷: 547
语种: 英语
中文关键词: 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
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.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/165035
Appears in Collections:气候变化与战略

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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

Recommended Citation:
Hu X.,Bürgmann R.. Aquifer deformation and active faulting in Salt Lake Valley, Utah, USA[J]. Earth and Planetary Science Letters,2020-01-01,547
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