Volumetric variations of glacier de Sarennes, French Alps, during the last two centuries
International audience The Glacier de Sarennes is located in the heart of the French Alps and has been observed closely since 1906 and regularly measured since 1948 (snow accumulation, ablation and mass balance). Several publications have stemmed from this research, such as the 1906 glaciological ma...
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ftccsdartic:oai:HAL:hal-02575960v1 2023-05-15T13:29:07+02:00 Volumetric variations of glacier de Sarennes, French Alps, during the last two centuries Les variations volumétriques du glacier de Sarennes, Alpes Françaises, au cours des derniers deux siècles Valla, F. Piedallu, Christian Érosion torrentielle, neige et avalanches (UR ETGR (ETNA)) Centre national du machinisme agricole, du génie rural, des eaux et forêts (CEMAGREF) 1997 https://hal.inrae.fr/hal-02575960 en eng HAL CCSD International Glaciological Society hal-02575960 https://hal.inrae.fr/hal-02575960 IRSTEA: PUB00002735 ISSN: 0260-3055 Annals of Glaciology https://hal.inrae.fr/hal-02575960 Annals of Glaciology, International Glaciological Society, 1997, pp.2-7 ALPES SARENNES [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 1997 ftccsdartic 2021-04-17T22:43:21Z International audience The Glacier de Sarennes is located in the heart of the French Alps and has been observed closely since 1906 and regularly measured since 1948 (snow accumulation, ablation and mass balance). Several publications have stemmed from this research, such as the 1906 glaciological map, the 1958 one and the 1981 and 1991 photogrammetric analysis. In 1992, a field radar campaign determined the ice thickness and allowed the construction of the bedrock map with reasonable accuracy. The "little ice age" stage was reconstructed with the bed-rock tracks, in 1995. Above-mentioned documents were digitized and the computer programm Arc-Info permitted the calculation of the successive volume stages occupied by the glacier between 1850 and 1991. Cross sections and slope profiles illustrate the evolution of the thickness of the Glacier de Sarennes during the last hundred and fifty years. All of these results, consistent with the variation of the mass balance observed or restitued, show the main conclusion : compared with today's stage, the glacier was about 4 times more voluminous (loss of 3/4 of its ice volume) ninety years ago and 5 times bigger one and a half century ago in circa 1850. Cet article présente le Glacier de Sarennes (France) dont le bilan de masse est mesuré depuis 1948. Chaque été, les paramètres glaciologiques caractéristiques sont mesurés à cinq stations représentatives du glacier, permettant de suivre l'accumulation hivernale, l'ablation estivale, le bilan de masse et le régime. L'ensemble de ces résultats est annuellement comparé avec ceux des années antérieures et avec les données météorologiques de la station de Grenoble. Grâce aux traces laissées par le glacier au siècle dernier, à la cartographie du Bedrock, aux cartes glaciologiques de 1906, 1958, 1981 et 1991 ainsi qu'aux diverses restitutions photogrammétriques, il a été possible de reconstituer en trois dimensions les phases du glacier. Article in Journal/Newspaper Annals of Glaciology Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
ALPES SARENNES [SDE]Environmental Sciences |
spellingShingle |
ALPES SARENNES [SDE]Environmental Sciences Valla, F. Piedallu, Christian Volumetric variations of glacier de Sarennes, French Alps, during the last two centuries |
topic_facet |
ALPES SARENNES [SDE]Environmental Sciences |
description |
International audience The Glacier de Sarennes is located in the heart of the French Alps and has been observed closely since 1906 and regularly measured since 1948 (snow accumulation, ablation and mass balance). Several publications have stemmed from this research, such as the 1906 glaciological map, the 1958 one and the 1981 and 1991 photogrammetric analysis. In 1992, a field radar campaign determined the ice thickness and allowed the construction of the bedrock map with reasonable accuracy. The "little ice age" stage was reconstructed with the bed-rock tracks, in 1995. Above-mentioned documents were digitized and the computer programm Arc-Info permitted the calculation of the successive volume stages occupied by the glacier between 1850 and 1991. Cross sections and slope profiles illustrate the evolution of the thickness of the Glacier de Sarennes during the last hundred and fifty years. All of these results, consistent with the variation of the mass balance observed or restitued, show the main conclusion : compared with today's stage, the glacier was about 4 times more voluminous (loss of 3/4 of its ice volume) ninety years ago and 5 times bigger one and a half century ago in circa 1850. Cet article présente le Glacier de Sarennes (France) dont le bilan de masse est mesuré depuis 1948. Chaque été, les paramètres glaciologiques caractéristiques sont mesurés à cinq stations représentatives du glacier, permettant de suivre l'accumulation hivernale, l'ablation estivale, le bilan de masse et le régime. L'ensemble de ces résultats est annuellement comparé avec ceux des années antérieures et avec les données météorologiques de la station de Grenoble. Grâce aux traces laissées par le glacier au siècle dernier, à la cartographie du Bedrock, aux cartes glaciologiques de 1906, 1958, 1981 et 1991 ainsi qu'aux diverses restitutions photogrammétriques, il a été possible de reconstituer en trois dimensions les phases du glacier. |
author2 |
Érosion torrentielle, neige et avalanches (UR ETGR (ETNA)) Centre national du machinisme agricole, du génie rural, des eaux et forêts (CEMAGREF) |
format |
Article in Journal/Newspaper |
author |
Valla, F. Piedallu, Christian |
author_facet |
Valla, F. Piedallu, Christian |
author_sort |
Valla, F. |
title |
Volumetric variations of glacier de Sarennes, French Alps, during the last two centuries |
title_short |
Volumetric variations of glacier de Sarennes, French Alps, during the last two centuries |
title_full |
Volumetric variations of glacier de Sarennes, French Alps, during the last two centuries |
title_fullStr |
Volumetric variations of glacier de Sarennes, French Alps, during the last two centuries |
title_full_unstemmed |
Volumetric variations of glacier de Sarennes, French Alps, during the last two centuries |
title_sort |
volumetric variations of glacier de sarennes, french alps, during the last two centuries |
publisher |
HAL CCSD |
publishDate |
1997 |
url |
https://hal.inrae.fr/hal-02575960 |
genre |
Annals of Glaciology |
genre_facet |
Annals of Glaciology |
op_source |
ISSN: 0260-3055 Annals of Glaciology https://hal.inrae.fr/hal-02575960 Annals of Glaciology, International Glaciological Society, 1997, pp.2-7 |
op_relation |
hal-02575960 https://hal.inrae.fr/hal-02575960 IRSTEA: PUB00002735 |
_version_ |
1765998540619776000 |