Glaciological and volumetric mass-balance measurements: error analysis over 51 years for Glacier de Sarennes, French Alps
International audience The mass balance of Glacier de Sarennes, French Alps, has been measured since 1949, using the glaciological method based on core and ablation stake data, and area extrapolations, to find the overall glacier balance. The cumulative balance obtained in this way is very dependent...
Published in: | Journal of Glaciology |
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Main Authors: | , , , |
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2008
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Online Access: | https://insu.hal.science/insu-00381089 https://insu.hal.science/insu-00381089/document https://insu.hal.science/insu-00381089/file/glaciological-and-volumetric-mass-balance-measurements-error-analysis-over-51-years-for-glacier-de-sarennes-french-alps.pdf https://doi.org/10.3189/002214308785837093 |
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ftunivsavoie:oai:HAL:insu-00381089v1 |
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openpolar |
institution |
Open Polar |
collection |
Université Savoie Mont Blanc: HAL |
op_collection_id |
ftunivsavoie |
language |
English |
topic |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
spellingShingle |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology Thibert, Emmanuel Blanc, R. Vincent, Christian Eckert, Nicolas Glaciological and volumetric mass-balance measurements: error analysis over 51 years for Glacier de Sarennes, French Alps |
topic_facet |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
International audience The mass balance of Glacier de Sarennes, French Alps, has been measured since 1949, using the glaciological method based on core and ablation stake data, and area extrapolations, to find the overall glacier balance. The cumulative balance obtained in this way is very dependent on systematic errors that can increase linearly with the number, N, of measurement years, whereas random errors rise with √N. The volumetric−balance method based on aerial photogrammetry provides results whose errors do not depend on the number of years. This method was used to test field measurements for the period 1952-2003 and gives a mass balance of −32.30±1.04 m w.e. compared to −34.89±1.15 m w.e. based on field data. The discrepancy between the two methods is discussed on the basis of a careful error analysis. Moreover, the possibility of using the volumetric method to detect biases in field measurements is evaluated in terms of two types of errors. The number and locations of measurement sites required to account for all the spatial and temporal variabilities of the mass balance is discussed by variance analysis. Methodological implications and recommendations are presented to provide massbalance measurements of the best possible accuracy. |
author2 |
Érosion torrentielle, neige et avalanches (UR ETGR (ETNA)) Centre national du machinisme agricole, du génie rural, des eaux et forêts (CEMAGREF) Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) GLACIOCLIM Observatoire de Recherce en Environnement (ORE) Programme d'Observation des Glaciers (POG) Institut National des Sciences de l'Univers, France (INSU) |
format |
Article in Journal/Newspaper |
author |
Thibert, Emmanuel Blanc, R. Vincent, Christian Eckert, Nicolas |
author_facet |
Thibert, Emmanuel Blanc, R. Vincent, Christian Eckert, Nicolas |
author_sort |
Thibert, Emmanuel |
title |
Glaciological and volumetric mass-balance measurements: error analysis over 51 years for Glacier de Sarennes, French Alps |
title_short |
Glaciological and volumetric mass-balance measurements: error analysis over 51 years for Glacier de Sarennes, French Alps |
title_full |
Glaciological and volumetric mass-balance measurements: error analysis over 51 years for Glacier de Sarennes, French Alps |
title_fullStr |
Glaciological and volumetric mass-balance measurements: error analysis over 51 years for Glacier de Sarennes, French Alps |
title_full_unstemmed |
Glaciological and volumetric mass-balance measurements: error analysis over 51 years for Glacier de Sarennes, French Alps |
title_sort |
glaciological and volumetric mass-balance measurements: error analysis over 51 years for glacier de sarennes, french alps |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://insu.hal.science/insu-00381089 https://insu.hal.science/insu-00381089/document https://insu.hal.science/insu-00381089/file/glaciological-and-volumetric-mass-balance-measurements-error-analysis-over-51-years-for-glacier-de-sarennes-french-alps.pdf https://doi.org/10.3189/002214308785837093 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
ISSN: 0022-1430 EISSN: 1727-5652 Journal of Glaciology https://insu.hal.science/insu-00381089 Journal of Glaciology, 2008, 54 (186), pp.522 - 532. ⟨10.3189/002214308785837093⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3189/002214308785837093 insu-00381089 https://insu.hal.science/insu-00381089 https://insu.hal.science/insu-00381089/document https://insu.hal.science/insu-00381089/file/glaciological-and-volumetric-mass-balance-measurements-error-analysis-over-51-years-for-glacier-de-sarennes-french-alps.pdf doi:10.3189/002214308785837093 WOS: 000259107900015 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3189/002214308785837093 |
container_title |
Journal of Glaciology |
container_volume |
54 |
container_issue |
186 |
container_start_page |
522 |
op_container_end_page |
532 |
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1796945635072540672 |
spelling |
ftunivsavoie:oai:HAL:insu-00381089v1 2024-04-21T08:06:17+00:00 Glaciological and volumetric mass-balance measurements: error analysis over 51 years for Glacier de Sarennes, French Alps Thibert, Emmanuel Blanc, R. Vincent, Christian Eckert, Nicolas Érosion torrentielle, neige et avalanches (UR ETGR (ETNA)) Centre national du machinisme agricole, du génie rural, des eaux et forêts (CEMAGREF) Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) GLACIOCLIM Observatoire de Recherce en Environnement (ORE) Programme d'Observation des Glaciers (POG) Institut National des Sciences de l'Univers, France (INSU) 2008 https://insu.hal.science/insu-00381089 https://insu.hal.science/insu-00381089/document https://insu.hal.science/insu-00381089/file/glaciological-and-volumetric-mass-balance-measurements-error-analysis-over-51-years-for-glacier-de-sarennes-french-alps.pdf https://doi.org/10.3189/002214308785837093 en eng HAL CCSD International Glaciological Society info:eu-repo/semantics/altIdentifier/doi/10.3189/002214308785837093 insu-00381089 https://insu.hal.science/insu-00381089 https://insu.hal.science/insu-00381089/document https://insu.hal.science/insu-00381089/file/glaciological-and-volumetric-mass-balance-measurements-error-analysis-over-51-years-for-glacier-de-sarennes-french-alps.pdf doi:10.3189/002214308785837093 WOS: 000259107900015 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 0022-1430 EISSN: 1727-5652 Journal of Glaciology https://insu.hal.science/insu-00381089 Journal of Glaciology, 2008, 54 (186), pp.522 - 532. ⟨10.3189/002214308785837093⟩ [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 2008 ftunivsavoie https://doi.org/10.3189/002214308785837093 2024-04-11T00:37:57Z International audience The mass balance of Glacier de Sarennes, French Alps, has been measured since 1949, using the glaciological method based on core and ablation stake data, and area extrapolations, to find the overall glacier balance. The cumulative balance obtained in this way is very dependent on systematic errors that can increase linearly with the number, N, of measurement years, whereas random errors rise with √N. The volumetric−balance method based on aerial photogrammetry provides results whose errors do not depend on the number of years. This method was used to test field measurements for the period 1952-2003 and gives a mass balance of −32.30±1.04 m w.e. compared to −34.89±1.15 m w.e. based on field data. The discrepancy between the two methods is discussed on the basis of a careful error analysis. Moreover, the possibility of using the volumetric method to detect biases in field measurements is evaluated in terms of two types of errors. The number and locations of measurement sites required to account for all the spatial and temporal variabilities of the mass balance is discussed by variance analysis. Methodological implications and recommendations are presented to provide massbalance measurements of the best possible accuracy. Article in Journal/Newspaper Journal of Glaciology Université Savoie Mont Blanc: HAL Journal of Glaciology 54 186 522 532 |