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Evolution des dynamiques territoriales des risques naturels dans la commune de Fully (Valais)

Hubert, Samuel ; Delaloye, Reynald (Dir.)

Mémoire de master : Médiathèque Valais, 2020.

The evolution of mountain permafrost in the context of climate change : towards a comprehensive analysis of permafrost monitoring data from the Swiss Alps

Staub, Benno ; Delaloye, Reynald (Dir.)

Thèse de doctorat : Université de Fribourg, 2015 ; no. 1949.

In the Swiss Alps, permafrost occurs discontinuously and commonly has a temperature close to 0 °C. A reduction of Alpine permafrost area and volume is expected in the course of atmospheric warming, but to date, limited evidence is available for Alpine permafrost degradation. Permafrost warming or thaw is accompanied by structural changes in the subsurface, which endanger infrastructure by...

Effets de la circulation d'air par effet de cheminée dans l'évolution du régime thermique des éboulis froids de basse et moyenne altitude

Morard, Sébastien ; Delaloye, Reynald (Dir.)

Thèse de doctorat : Université de Fribourg, 2011 ; no 1732.

In the Swiss Alps, mountain permafrost – subsurface materials remaining at negative ground temperatures throughout the year – is encountered discontinuously above about 2300 m.a.s.l. Nevertheless, abnormally cold ground conditions indicating possible occurrence of isolated permafrost patches have been reported in many locations at much lower elevation where the mean annual air temperature is...