Mapping permafrost at a regional scale: interpolation of field data by using GIS in the Upper Durance catchment (Southern French Alps)
International audience Southern French Alps are mostly non-glaciated areas, but permafrost was locally evidenced at high altitudes (above 2800 m.a.s.l.). A clarification of permafrost spatial extent is currently needed because it constitutes a water resource. We suggest here a new method to map the...
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ftsorbonneuniv:oai:HAL:hal-00545254v1 2024-05-19T07:41:49+00:00 Mapping permafrost at a regional scale: interpolation of field data by using GIS in the Upper Durance catchment (Southern French Alps) Cossart, Etienne, Edouard Perrier, Romain Schwarz, M. Houée, S. Pôle de recherche pour l'organisation et la diffusion de l'information géographique (PRODIG) Université Paris 1 Panthéon-Sorbonne (UP1)-Institut de Recherche pour le Développement (IRD)-École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université Paris-Sorbonne (UP4)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS) Conseil Général des Hautes Alpes - VAL-PG 2008-01-08 https://hal.science/hal-00545254 en eng HAL CCSD Grupo de Métodos Cuantitativos, SIG y Teledetección, A.G.E hal-00545254 https://hal.science/hal-00545254 ISSN: 1578-5157 GeoFocus https://hal.science/hal-00545254 GeoFocus, 2008, 8, pp.205-224 water temperature GIS modelling Permafrost Southern French Alps water resource rockglacier [SHS.GEO]Humanities and Social Sciences/Geography info:eu-repo/semantics/article Journal articles 2008 ftsorbonneuniv 2024-04-25T03:39:31Z International audience Southern French Alps are mostly non-glaciated areas, but permafrost was locally evidenced at high altitudes (above 2800 m.a.s.l.). A clarification of permafrost spatial extent is currently needed because it constitutes a water resource. We suggest here a new method to map the permafrost. This method is based upon water temperature measurements, providing many observations (presence or absence) about permafrost in various physical settings. Such point-based data are integrated in a spatial database to realize an interpolation of the presence of permafrost. The study area is subdivided in many classes according to the incoming solar radiation. For each class, two thresholds are specified, one above which permafrost can possibly be observed, the other one above which permafrost can probably be observed. This method seems to complete previous models which were mostly based upon rockglacier inventories or BTS measurements. A map of permafrost extent is proposed, showing that it may possibly occur above 2500 m.a.s.l. in highly shielded areas. Some ice may be still stored within some footslope deposits, constituting a possible water resource. Article in Journal/Newspaper Ice permafrost HAL Sorbonne Université |
institution |
Open Polar |
collection |
HAL Sorbonne Université |
op_collection_id |
ftsorbonneuniv |
language |
English |
topic |
water temperature GIS modelling Permafrost Southern French Alps water resource rockglacier [SHS.GEO]Humanities and Social Sciences/Geography |
spellingShingle |
water temperature GIS modelling Permafrost Southern French Alps water resource rockglacier [SHS.GEO]Humanities and Social Sciences/Geography Cossart, Etienne, Edouard Perrier, Romain Schwarz, M. Houée, S. Mapping permafrost at a regional scale: interpolation of field data by using GIS in the Upper Durance catchment (Southern French Alps) |
topic_facet |
water temperature GIS modelling Permafrost Southern French Alps water resource rockglacier [SHS.GEO]Humanities and Social Sciences/Geography |
description |
International audience Southern French Alps are mostly non-glaciated areas, but permafrost was locally evidenced at high altitudes (above 2800 m.a.s.l.). A clarification of permafrost spatial extent is currently needed because it constitutes a water resource. We suggest here a new method to map the permafrost. This method is based upon water temperature measurements, providing many observations (presence or absence) about permafrost in various physical settings. Such point-based data are integrated in a spatial database to realize an interpolation of the presence of permafrost. The study area is subdivided in many classes according to the incoming solar radiation. For each class, two thresholds are specified, one above which permafrost can possibly be observed, the other one above which permafrost can probably be observed. This method seems to complete previous models which were mostly based upon rockglacier inventories or BTS measurements. A map of permafrost extent is proposed, showing that it may possibly occur above 2500 m.a.s.l. in highly shielded areas. Some ice may be still stored within some footslope deposits, constituting a possible water resource. |
author2 |
Pôle de recherche pour l'organisation et la diffusion de l'information géographique (PRODIG) Université Paris 1 Panthéon-Sorbonne (UP1)-Institut de Recherche pour le Développement (IRD)-École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université Paris-Sorbonne (UP4)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS) Conseil Général des Hautes Alpes - VAL-PG |
format |
Article in Journal/Newspaper |
author |
Cossart, Etienne, Edouard Perrier, Romain Schwarz, M. Houée, S. |
author_facet |
Cossart, Etienne, Edouard Perrier, Romain Schwarz, M. Houée, S. |
author_sort |
Cossart, Etienne, Edouard |
title |
Mapping permafrost at a regional scale: interpolation of field data by using GIS in the Upper Durance catchment (Southern French Alps) |
title_short |
Mapping permafrost at a regional scale: interpolation of field data by using GIS in the Upper Durance catchment (Southern French Alps) |
title_full |
Mapping permafrost at a regional scale: interpolation of field data by using GIS in the Upper Durance catchment (Southern French Alps) |
title_fullStr |
Mapping permafrost at a regional scale: interpolation of field data by using GIS in the Upper Durance catchment (Southern French Alps) |
title_full_unstemmed |
Mapping permafrost at a regional scale: interpolation of field data by using GIS in the Upper Durance catchment (Southern French Alps) |
title_sort |
mapping permafrost at a regional scale: interpolation of field data by using gis in the upper durance catchment (southern french alps) |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://hal.science/hal-00545254 |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
ISSN: 1578-5157 GeoFocus https://hal.science/hal-00545254 GeoFocus, 2008, 8, pp.205-224 |
op_relation |
hal-00545254 https://hal.science/hal-00545254 |
_version_ |
1799481426018566144 |