Landslides on ice-rich slopes - a geohazard in a changing climate
Ryan Robert Lyle, Marc-André Brideau, Panya Lipovsky, D Jean Hutchinson
In the proceedings of: GeoHazards 6: 6th Canadian Geohazards ConferenceSession: Multi-element Scenarios
ABSTRACT: Slopes in warm discontinuous permafrost have long been recognized as a potential hazard to development. Both human and natural disturbance of such slopes can lead to instability with the exposure of ice-rich sediments. This paper provides a case study of the Little Salmon Lake area in central Yukon where an acceleration of natural landslide processes has taken place in the past two decades. Ice-rich permafrost has played an integral role in three large recent landslides with distinct processes. These provide an example of the geohazard of ice-rich permafrost slopes in a changing climate.
RÉSUMÉ: Les pentes en pergélisol discontinu chaud ont longtemps été identifiées comme risque potentiel au développement. Les perturbations anthropogéniques et naturelles de telles pentes peuvent mener à l'instabilité avec l'exposition des sédiments riches en glace. Cet article fournit une étude de cas d'une région dans le Yukon central où une accélération des processus naturels d'éboulement a eu lieu dans les deux dernières décennies. La dégradation du pergélisol chaud et riche en glace a joué un rôle intégral dans trois grands éboulements récents avec des processus distincts. Ceux-ci fournissent un exemple de georisque associé avec les pentes pergélisol riches en glace dans un climat changeant.
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Cite this article:
Lyle, Ryan Robert, Brideau, Marc-André, Lipovsky, Panya, Hutchinson, D Jean (2014) Landslides on ice-rich slopes - a geohazard in a changing climate in GeoHazards6. Ottawa, Ontario: Canadian Geotechnical Society.
@inproceedings{Lyle_GeoHazards6_119,
author = {{Lyle, Ryan Robert}, {Brideau, Marc-André}, {Lipovsky, Panya}, {Hutchinson, D Jean}}
title = {Landslides on ice-rich slopes - a geohazard in a changing climate }
booktitle = {Proceedings of the 6th Canadian Geohazards Conference}
year = {2014}
organization = {The Canadian Geotechnical Society},
address = {Ottawa, Canada} }
title = {Landslides on ice-rich slopes - a geohazard in a changing climate }
booktitle = {Proceedings of the 6th Canadian Geohazards Conference}
year = {2014}
organization = {The Canadian Geotechnical Society},
address = {Ottawa, Canada} }