Warming Permafrost in the Western Alps: A Further Evidence of Elevation Dependent Warming?
The present study aims at characterising the recent thermal evolution of permafrost in the Aosta Valley region (Italy, Western European Alps) using active layer thickness anomalies and warming trends of both surface and deep temperatures as indicators. The dataset includes monitoring sites located a...
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Institut de Géographie Alpine
2023
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ftdoajarticles:oai:doaj.org/article:04e0c110c2754e57bb889dc364eb26b7 2024-01-07T09:37:55+01:00 Warming Permafrost in the Western Alps: A Further Evidence of Elevation Dependent Warming? Paolo Pogliotti Edoardo Cremonese Umberto Morra di Cella 2023-10-01T00:00:00Z https://doi.org/10.4000/rga.11784 https://doaj.org/article/04e0c110c2754e57bb889dc364eb26b7 EN FR eng fre Institut de Géographie Alpine http://journals.openedition.org/rga/11784 https://doaj.org/toc/0035-1121 https://doaj.org/toc/1760-7426 0035-1121 1760-7426 doi:10.4000/rga.11784 https://doaj.org/article/04e0c110c2754e57bb889dc364eb26b7 Revue de Géographie Alpine, Vol 111, Iss 2 (2023) mountain permafrost warming trend active layer EDW Geography. Anthropology. Recreation G Physical geography GB3-5030 article 2023 ftdoajarticles https://doi.org/10.4000/rga.11784 2023-12-10T01:39:20Z The present study aims at characterising the recent thermal evolution of permafrost in the Aosta Valley region (Italy, Western European Alps) using active layer thickness anomalies and warming trends of both surface and deep temperatures as indicators. The dataset includes monitoring sites located at different altitudes and geomorphological contexts such as rock walls, high-altitude plateau and proglacial margins.The results show that the thickness of the active layer is increasing everywhere and that anomalies are consistent between sites despite their different characteristics and distances. Significant warming trends of about +0.2°C/10y are observed at 15 m depth in sites around 3000 m of elevation. In steep rockwalls warming trends at the rock surface are significant only on the north-facing faces where values are on average +0.42°C/10y at elevations above 4000 m.The present study aims to provide a snapshot on the current thermal evolution of permafrost in the north-western Alps as well as consistent and useful information for risk management. Taking advantage of this analysis, the study also aims to highlight as the temperature measures in permafrost could contribute to the elevation-dependent-warming debate. Article in Journal/Newspaper Active layer thickness permafrost Directory of Open Access Journals: DOAJ Articles Revue de géographie alpine 111-2 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English French |
topic |
mountain permafrost warming trend active layer EDW Geography. Anthropology. Recreation G Physical geography GB3-5030 |
spellingShingle |
mountain permafrost warming trend active layer EDW Geography. Anthropology. Recreation G Physical geography GB3-5030 Paolo Pogliotti Edoardo Cremonese Umberto Morra di Cella Warming Permafrost in the Western Alps: A Further Evidence of Elevation Dependent Warming? |
topic_facet |
mountain permafrost warming trend active layer EDW Geography. Anthropology. Recreation G Physical geography GB3-5030 |
description |
The present study aims at characterising the recent thermal evolution of permafrost in the Aosta Valley region (Italy, Western European Alps) using active layer thickness anomalies and warming trends of both surface and deep temperatures as indicators. The dataset includes monitoring sites located at different altitudes and geomorphological contexts such as rock walls, high-altitude plateau and proglacial margins.The results show that the thickness of the active layer is increasing everywhere and that anomalies are consistent between sites despite their different characteristics and distances. Significant warming trends of about +0.2°C/10y are observed at 15 m depth in sites around 3000 m of elevation. In steep rockwalls warming trends at the rock surface are significant only on the north-facing faces where values are on average +0.42°C/10y at elevations above 4000 m.The present study aims to provide a snapshot on the current thermal evolution of permafrost in the north-western Alps as well as consistent and useful information for risk management. Taking advantage of this analysis, the study also aims to highlight as the temperature measures in permafrost could contribute to the elevation-dependent-warming debate. |
format |
Article in Journal/Newspaper |
author |
Paolo Pogliotti Edoardo Cremonese Umberto Morra di Cella |
author_facet |
Paolo Pogliotti Edoardo Cremonese Umberto Morra di Cella |
author_sort |
Paolo Pogliotti |
title |
Warming Permafrost in the Western Alps: A Further Evidence of Elevation Dependent Warming? |
title_short |
Warming Permafrost in the Western Alps: A Further Evidence of Elevation Dependent Warming? |
title_full |
Warming Permafrost in the Western Alps: A Further Evidence of Elevation Dependent Warming? |
title_fullStr |
Warming Permafrost in the Western Alps: A Further Evidence of Elevation Dependent Warming? |
title_full_unstemmed |
Warming Permafrost in the Western Alps: A Further Evidence of Elevation Dependent Warming? |
title_sort |
warming permafrost in the western alps: a further evidence of elevation dependent warming? |
publisher |
Institut de Géographie Alpine |
publishDate |
2023 |
url |
https://doi.org/10.4000/rga.11784 https://doaj.org/article/04e0c110c2754e57bb889dc364eb26b7 |
genre |
Active layer thickness permafrost |
genre_facet |
Active layer thickness permafrost |
op_source |
Revue de Géographie Alpine, Vol 111, Iss 2 (2023) |
op_relation |
http://journals.openedition.org/rga/11784 https://doaj.org/toc/0035-1121 https://doaj.org/toc/1760-7426 0035-1121 1760-7426 doi:10.4000/rga.11784 https://doaj.org/article/04e0c110c2754e57bb889dc364eb26b7 |
op_doi |
https://doi.org/10.4000/rga.11784 |
container_title |
Revue de géographie alpine |
container_issue |
111-2 |
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1787422150560317440 |