Permafrost distribution in talus slopes located within the alpine periglacial belt, Swiss Alps
The extent of permafrost in nine talus slopes located within the alpine periglacial belt in the western Swiss Alps was investigated using ground surface temperature measurements and one‐ dimensional geoelectrical profiles. Based on the thermal data, permafrost appears likely in the lower parts of th...
Published in: | Permafrost and Periglacial Processes |
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Language: | unknown |
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Online Access: | https://doi.org/10.1002/ppp.624 |
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ftrepec:oai:RePEc:wly:perpro:v:19:y:2008:i:3:p:293-304 2023-05-15T17:55:26+02:00 Permafrost distribution in talus slopes located within the alpine periglacial belt, Swiss Alps Christophe Lambiel Kim Pieracci https://doi.org/10.1002/ppp.624 unknown https://doi.org/10.1002/ppp.624 article ftrepec https://doi.org/10.1002/ppp.624 2020-12-04T13:31:03Z The extent of permafrost in nine talus slopes located within the alpine periglacial belt in the western Swiss Alps was investigated using ground surface temperature measurements and one‐ dimensional geoelectrical profiles. Based on the thermal data, permafrost appears likely in the lower parts of the slopes. At the same locations, an electrically resistive layer, interpreted as frozen sediments, was identified beneath 3–5 m of surface materials. Further upslope, resistivities were lower and ground surface temperatures were warmer, suggesting that permafrost was absent. The cooling of the ground in the lower parts of some of the talus slopes investigated was apparently due to the chimney effect. It is inferred that this mechanism plays an important role in permafrost development in the lower half of talus slopes located within the discontinuous mountain permafrost belt. Copyright © 2008 John Wiley & Sons, Ltd. Article in Journal/Newspaper permafrost RePEc (Research Papers in Economics) The Chimney ENVELOPE(-55.748,-55.748,52.617,52.617) Permafrost and Periglacial Processes 19 3 293 304 |
institution |
Open Polar |
collection |
RePEc (Research Papers in Economics) |
op_collection_id |
ftrepec |
language |
unknown |
description |
The extent of permafrost in nine talus slopes located within the alpine periglacial belt in the western Swiss Alps was investigated using ground surface temperature measurements and one‐ dimensional geoelectrical profiles. Based on the thermal data, permafrost appears likely in the lower parts of the slopes. At the same locations, an electrically resistive layer, interpreted as frozen sediments, was identified beneath 3–5 m of surface materials. Further upslope, resistivities were lower and ground surface temperatures were warmer, suggesting that permafrost was absent. The cooling of the ground in the lower parts of some of the talus slopes investigated was apparently due to the chimney effect. It is inferred that this mechanism plays an important role in permafrost development in the lower half of talus slopes located within the discontinuous mountain permafrost belt. Copyright © 2008 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Christophe Lambiel Kim Pieracci |
spellingShingle |
Christophe Lambiel Kim Pieracci Permafrost distribution in talus slopes located within the alpine periglacial belt, Swiss Alps |
author_facet |
Christophe Lambiel Kim Pieracci |
author_sort |
Christophe Lambiel |
title |
Permafrost distribution in talus slopes located within the alpine periglacial belt, Swiss Alps |
title_short |
Permafrost distribution in talus slopes located within the alpine periglacial belt, Swiss Alps |
title_full |
Permafrost distribution in talus slopes located within the alpine periglacial belt, Swiss Alps |
title_fullStr |
Permafrost distribution in talus slopes located within the alpine periglacial belt, Swiss Alps |
title_full_unstemmed |
Permafrost distribution in talus slopes located within the alpine periglacial belt, Swiss Alps |
title_sort |
permafrost distribution in talus slopes located within the alpine periglacial belt, swiss alps |
url |
https://doi.org/10.1002/ppp.624 |
long_lat |
ENVELOPE(-55.748,-55.748,52.617,52.617) |
geographic |
The Chimney |
geographic_facet |
The Chimney |
genre |
permafrost |
genre_facet |
permafrost |
op_relation |
https://doi.org/10.1002/ppp.624 |
op_doi |
https://doi.org/10.1002/ppp.624 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
19 |
container_issue |
3 |
container_start_page |
293 |
op_container_end_page |
304 |
_version_ |
1766163380830208000 |