2023
DOI: 10.5194/esurf-11-899-2023
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Estimating surface water availability in high mountain rock slopes using a numerical energy balance model

Matan Ben-Asher,
Florence Magnin,
Sebastian Westermann
et al.

Abstract: Abstract. Water takes part in most physical processes that shape mountainous periglacial landscapes and initiation of mass-wasting processes. An observed increase in rockfall activity in high mountain regions was previously linked to permafrost degradation, and water that infiltrates into rock fractures is one of the likely drivers of processes related to thawing and destabilization. However, there is very little knowledge of the quantity and timing of water availability for infiltration into steep rock slopes… Show more

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Cited by 3 publications
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“…More snow is available on the flat Plateau compared to the 40/50°-steep slopes, and regular avalanche detachments for safety reasons further reduce snow availability. A basal ice layer at the cold interface rock-snow is supposed to strongly limit snowmelt penetration in rock walls (Phillips et al, 2016;Ben-Asher et al, 2023). Still, Kneisel et al (2014) documented 385 thermal disturbance in the underground as soon as snowmelt started, while Kristensen et al (2021) and Roth and Blikra (2009) recorded large increases in rockslide displacements late in the snowmelting season.…”
Section: Discussionmentioning
confidence: 99%
“…More snow is available on the flat Plateau compared to the 40/50°-steep slopes, and regular avalanche detachments for safety reasons further reduce snow availability. A basal ice layer at the cold interface rock-snow is supposed to strongly limit snowmelt penetration in rock walls (Phillips et al, 2016;Ben-Asher et al, 2023). Still, Kneisel et al (2014) documented 385 thermal disturbance in the underground as soon as snowmelt started, while Kristensen et al (2021) and Roth and Blikra (2009) recorded large increases in rockslide displacements late in the snowmelting season.…”
Section: Discussionmentioning
confidence: 99%