Fracture kinematics in steep bedrock permafrost, Aiguille du Midi (3842 m a.s.l., Chamonix Mont-Blanc, France)
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Theme with variations Theme and variations Musical variations Cratogene Geologic shells Bedrock Continental shields Service of process Service of papers Abuse of process Process Exhaustion Tiredness Lassitude Weariness Construction Ecological science Environmental biology Bionomics Ecological sciences Environment Balance of nature Oecology Biology--Ecology Ecological processes Eternally frozen ground Tjale Permanently frozen ground Ever frozen ground Perennially frozen ground Perpetually frozen ground Pergelisol permafrost permafrostCiter ce document
Gregoire Guillet et al., « Fracture kinematics in steep bedrock permafrost, Aiguille du Midi (3842 m a.s.l., Chamonix Mont-Blanc, France) », HAL-SHS : géographie, ID : 10670/1.d47nvn
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Résumé
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.