DOI: 10.1002/2013GL058566
论文题名: Deep fluids can facilitate rupture of slow-moving giant landslides as a result of stress transfer and frictional weakening
作者: Cappa F. ; Guglielmi Y. ; Viseur S. ; Garambois S.
刊名: Geophysical Research Letters
ISSN: 0094-10507
EISSN: 1944-10238
出版年: 2014
卷: 41, 期: 1 起始页码: 61
结束页码: 66
语种: 英语
英文关键词: fluids
; friction weakening
; giant landslides
; rupture
; stress transfer
Scopus关键词: Fluid pressures
; Frictional properties
; Ground water table
; Hydro-mechanical modeling
; rupture
; Strain partitioning
; Stress transfer
; Surface strains
; Fluids
; Friction
; Groundwater
; Seismology
; Tribology
; Landslides
; friction
; geodesy
; landslide
; rock property
; rupture
; seismicity
; strain partitioning
; stress field
; water table
; France
英文摘要: Landslides accommodate slow, aseismic slip and fast, seismic rupture, which are sensitive to fluid pressures and rock frictional properties. The study of strain partitioning in the Séchilienne landslide (France) provides a unique insight into this sensitivity. Here we show with hydromechanical modeling that a significant part of the observed landslide motions and associated seismicity may be caused by poroelastic strain below the landslide, induced by groundwater table variations. In the unstable volume near the surface, calculated strain and rupture may be controlled by stress transfer and friction weakening above the phreatic zone and reproduce well high-motion zone characteristics measured by geodesy and geophysics. The key model parameters are friction weakening and the position of groundwater level, which is sufficiently constrained by field data to support the physical validity of the model. These results are of importance for the understanding of surface strain evolution under weak forcing. Key Points Deep fluid pressures can activate stable or slowly moving giant landslides No significant stressing is needed to explain seismic and geodetic data Implications for the partitioning of seismic and aseismic sliding ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84896711947&doi=10.1002%2f2013GL058566&partnerID=40&md5=5697b1ab0a6c8c80c7a603afbd23268f
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7771
Appears in Collections: 气候减缓与适应
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作者单位: Université de Nice Sophia Antipolis, CNRS, Geoazur UMR 7329, 250 rue Albert Einstein, Sophia Antipolis, FR-06560 Valbonne, France
Recommended Citation:
Cappa F.,Guglielmi Y.,Viseur S.,et al. Deep fluids can facilitate rupture of slow-moving giant landslides as a result of stress transfer and frictional weakening[J]. Geophysical Research Letters,2014-01-01,41(1).