Sub-surface Heterogeneities in the Murtèl - Corvatsch Rock Glacier, Switzerland
Lukas U. Arenson, Christian Hauck, Christin Hilbich, Linda Seward, Yuko Yamamoto, Sarah M. Springman
In the proceedings of: GEO2010 Calgary: 63rd Canadian Geotechnical Conference & 6th Canadian Permafrost ConferenceSession: T2-E
ABSTRACT: Several long-term deep ground temperature data and surface electrical resistivity tomography (ERT) results are available for the MurtèlŒCorvatsch rock glacier, located in the Swiss Alps. Even though the boreholes are in close proximity, the temperature profiles show significant differences. One displays expected temperatures and gradients, whereas the second shows isothermal conditions with depth for most of the summer months. Recent ERT surveys indicate significant subsurface heterogeneities in the same area of the rock glacier. These results suggest that taliks with intra-permafrost groundwater flow exist in this lower part of the rock glacier and that these affect rock glacier temperatures.
RÉSUMÉ: Plusieurs températures du sol et résultats tomographie de la résistivité électrique (ERT) existe pour le glacier rocheux MurtèlŒCorvatsch, situé dans les Alpes Suisses. Même si les forages sont à proximité, les profils de température exhibent des différences significatives. Une indique des températures et des gradients normaux, alors que le second montre les conditions isothermales en profondeur pour la plupart des mois d'été. Des investigations ERT récentes indiquent hétérogénéités souterraines importantes dans la même région du glacier rocheux. Ces résultats suggèrent que des taliks avec écoulement d'eaux souterraines intra-pergélisol existent dans cette partie du glacier rocheux qui influence les températures de glacier rocheux.
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Lukas U. Arenson; Christian Hauck; Christin Hilbich; Linda Seward; Yuko Yamamoto; Sarah M. Springman (2010) Sub-surface Heterogeneities in the Murtèl - Corvatsch Rock Glacier, Switzerland in GEO2010. Ottawa, Ontario: Canadian Geotechnical Society.
@article{GEO2010_199,
author = Lukas U. Arenson; Christian Hauck; Christin Hilbich; Linda Seward; Yuko Yamamoto; Sarah M. Springman,
title = Sub-surface Heterogeneities in the Murtèl - Corvatsch Rock Glacier, Switzerland,
year = 2010
}
title = Sub-surface Heterogeneities in the Murtèl - Corvatsch Rock Glacier, Switzerland,
year = 2010
}