In: Botanica Helvetica, 2006, vol. 116, no. 1, p. 41-54
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In: Computational Geosciences, 2006, vol. 10, no. 2, p. 161-178
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In: Earth Surface Processes and Landforms, 2014, vol. 39, no. 15, p. 2056–2069
Surface temperature increases since the 1990s have often been associated with an increase in the speed of rock glaciers. Evidence of similar links on the centennial to millennial scale are, however, still lacking due to less focus to date on the medium- and long-term kinematics of these landforms. In order to assess (palaeo)climatic variations in rock glacier kinematics, we analysed the movements...
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In: Journal of Geophysical Research: Earth Surface, 2013, vol. 18, no. 2, p. 780–794
Climate change as projected by contemporary general circulation models (GCMs) and regional climate models (RCMs) will have a great impact on high latitude and high mountain permafrost. A process-based one-dimensional permafrost model is used to evaluate the sensitivity of two characteristic alpine permafrost sites to changes in climate for a 110 year time period starting 1991 and ending 2100...
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In: Permafrost and Periglacial Processes, 2011, vol. 22, no. 4, p. 306–319
A new automated electrical resistivity tomography (A-ERT) system is described that allows continuous measurements of the electrical resistivity distribution in high-mountain or polar terrain. The advantages of continuous resistivity monitoring, as opposed to single measurements at irregular time intervals, are illustrated using the permafrost monitoring station at the Schilthorn, Swiss Alps. Data...
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In: Permafrost and Periglacial Processes, 2011, vol. 21, no. 4, p. 325–334
A coupled heat and mass transfer model simulating mass and energy balance of the soil-snow-atmosphere boundary layer was applied to simulate ground temperatures, together with water and ice content evolution, in the active layer of an alpine permafrost site on Schilthorn, Swiss Alps. Abrupt shifts and subsequent fluctuations in ground temperature observed in alpine permafrost boreholes at the...
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Mémoire de master : Université de Lausanne, 2008.
Dans le contexte d’un climat de plus en plus chaud, l’étude de la répartition du permafrost dans tous les contextes morphoclimatiques des Alpes s’avère primordiale. S’insérant dans cette problématique, ce travail de mémoire a pour but l’étude des environnements périglaciaires du Sud des Alpes Suisses selon deux axes de recherche différents. D’un point de vue géographique,...
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Mémoire de master : Université de Lausanne, 2006.
Cette étude s’insère dans le contexte du réchauffement climatique global, domaine dans lequel la modélisation de la distribution du pergélisol acquiert de plus en plus d’importance en raison des risques liés à l’instabilité potentielle des pentes soumises aux conditions de gel permanent. La distribution du pergélisol a souvent été modélisée de manière assez grossière par...
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In: Botanica Helvetica, 2006, vol. 116, p. 41-54
Polygonal soils are typical formations of arctic regions but occur locally at high elevation in the Alps. A vegetation survey of sites with polygonal patterning of soils in the Western Swiss Alps revealed a clear distinction between (1) periglacial polygonal soils, whose structure is created by frost action, and whose occurrence is limited to the subniveal belt (2700–3000 m a.s.l.) and (2)...
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