The influence of overpressure and focused fluid flow on subaquatic slope stability in a formerly glaciated basin: Lake Villarrica (South-Central Chile)

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• 作者：Jasper Moernaut^a ; ^f ; ^{Jasper.Moernaut@uibk.ac.at} ; Gauvain Wiemer^b ; Anna Reusch^c ; ⁱ ; Nina Stark^d ; Marc De Batist^e ; Roberto Urrutia^g ; Bruno Ladró ; n de Guevara^h ; Achim Kopf^b ; Michael Strasser^a
• 关键词：Subaquatic landslide ; Excess pore pressure ; Slope stability ; Deglaciation depositional history ; Subsurface fluid flow
• 刊名：Marine Geology
• 出版年：2017
• 出版时间：1 January 2017
• 年：2017
• 卷：383
• 期：Complete
• 页码：35-54
• 全文大小：6169 K
• 卷排序：383

文摘

In-situ geotechnical data reveal severe shallow overpressure in a subaquatic slope. Spatial variation in overpressure ratio determines subaquatic slope failure location. Deglacation depositional history leads to underconsolidated units and permeability barriers. Subsequent consolidation and flow focusing determine overpressure distribution.