Fracture kinematics in steep bedrock permafrost, Aiguille du Midi (3842 m a.s.l., Chamonix Mont-Blanc, France)

International audience Permafrost-affected rockwalls can suffer from mechanical fatigue related to thermo-cryogenic processes. However, these processes, the rock slope kinematics, and the links between both remain largely unclear. This study reports five years of crackmeter measurements at 2-hours r...

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Bibliographic Details
Main Authors: guillet, gregoire, Ravanel, Ludovic, Beutel, Jan, Deline, Philip
Other Authors: Environnements, Dynamiques et Territoires de la Montagne (EDYTEM), Centre National de la Recherche Scientifique (CNRS)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry ), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology Zürich (ETH Zürich), Edited by Philip Deline, Xavier Bodin and Ludovic Ravanel, Co-editors: Chloé Barboux, Reynald Delaloye, Christophe Lambiel, Florence Magnin, Marco Marcer, Paolo Pogliotti, Philippe Schoeneich
Format: Other/Unknown Material
Language:English
Published: HAL CCSD 2018
Subjects:
geo
envir
Mont Blanc
Ice
permafrost
Online Access:https://hal.archives-ouvertes.fr/hal-01892269
Description
Summary:International audience Permafrost-affected rockwalls can suffer from mechanical fatigue related to thermo-cryogenic processes. However, these processes, the rock slope kinematics, and the links between both remain largely unclear. This study reports five years of crackmeter measurements at 2-hours resolution from six of the main perennially ice-filled rock clefts at the Aiguille du Midi (3842 m a.s.l., Mont Blanc massif). Seasonal and inter-annual variations as well as response of fracture kinematics to thermo-cryogenic process are analyzed.

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