The Aneto glacier's (Central Pyrenees) evolution from 1981 to 2022: ice loss observed from historic aerial image photogrammetry and remote sensing techniques
The Aneto glacier, although it may be considered a very small glacier (<0.5 km2), is the largest glacier in the Pyrenees. Its surface and thickness loss have been continuous in recent decades, and there have been signs of accelerated melting in recent years. In this study, thickness and surface l...
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Copernicus Publications
2023
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00068048 2023-09-05T13:23:43+02:00 The Aneto glacier's (Central Pyrenees) evolution from 1981 to 2022: ice loss observed from historic aerial image photogrammetry and remote sensing techniques Vidaller, Ixeia Izagirre, Eñaut del Rio, Luis Mariano Alonso-González, Esteban Rojas-Heredia, Francisco Serrano, Enrique Moreno, Ana López-Moreno, Juan Ignacio Revuelto, Jesús 2023-08 electronic https://doi.org/10.5194/tc-17-3177-2023 https://noa.gwlb.de/receive/cop_mods_00068048 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00066483/tc-17-3177-2023.pdf https://tc.copernicus.org/articles/17/3177/2023/tc-17-3177-2023.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-17-3177-2023 https://noa.gwlb.de/receive/cop_mods_00068048 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00066483/tc-17-3177-2023.pdf https://tc.copernicus.org/articles/17/3177/2023/tc-17-3177-2023.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2023 ftnonlinearchiv https://doi.org/10.5194/tc-17-3177-2023 2023-08-13T23:19:58Z The Aneto glacier, although it may be considered a very small glacier (<0.5 km2), is the largest glacier in the Pyrenees. Its surface and thickness loss have been continuous in recent decades, and there have been signs of accelerated melting in recent years. In this study, thickness and surface losses of the Aneto glacier from 1981 to 2022 are investigated using historical aerial imagery, airborne lidar point clouds and unoccupied aerial vehicle (UAV) imagery. A ground-penetrating radar (GPR) survey conducted in 2020, combined with data from photogrammetric analyses, allowed us to reconstruct the current ice thickness and also the existing ice distribution in 1981 and 2011. Over the last 41 years, the total glacierised area has decreased by 64.7 %, and the ice thickness has decreased, on average, by 30.5 m. The mean remaining ice thickness in autumn 2022 was 11.9 m, as against the mean thickness of 32.9, 19.2 and 15.0 m reconstructed for 1981 and 2011 and observed in 2020, respectively. The results demonstrate the critical situation of the glacier, with an imminent segmentation into two smaller ice bodies and no evidence of an accumulation zone. We also found that the occurrence of an extremely hot and dry year, as observed in the 2021–2022 season, leads to a drastic degradation of the glacier, posing a high risk to the persistence of the Aneto glacier, a situation that could extend to the rest of the Pyrenean glaciers in a relatively short time. Article in Journal/Newspaper The Cryosphere Niedersächsisches Online-Archiv NOA The Cryosphere 17 8 3177 3192 |
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article Verlagsveröffentlichung Vidaller, Ixeia Izagirre, Eñaut del Rio, Luis Mariano Alonso-González, Esteban Rojas-Heredia, Francisco Serrano, Enrique Moreno, Ana López-Moreno, Juan Ignacio Revuelto, Jesús The Aneto glacier's (Central Pyrenees) evolution from 1981 to 2022: ice loss observed from historic aerial image photogrammetry and remote sensing techniques |
topic_facet |
article Verlagsveröffentlichung |
description |
The Aneto glacier, although it may be considered a very small glacier (<0.5 km2), is the largest glacier in the Pyrenees. Its surface and thickness loss have been continuous in recent decades, and there have been signs of accelerated melting in recent years. In this study, thickness and surface losses of the Aneto glacier from 1981 to 2022 are investigated using historical aerial imagery, airborne lidar point clouds and unoccupied aerial vehicle (UAV) imagery. A ground-penetrating radar (GPR) survey conducted in 2020, combined with data from photogrammetric analyses, allowed us to reconstruct the current ice thickness and also the existing ice distribution in 1981 and 2011. Over the last 41 years, the total glacierised area has decreased by 64.7 %, and the ice thickness has decreased, on average, by 30.5 m. The mean remaining ice thickness in autumn 2022 was 11.9 m, as against the mean thickness of 32.9, 19.2 and 15.0 m reconstructed for 1981 and 2011 and observed in 2020, respectively. The results demonstrate the critical situation of the glacier, with an imminent segmentation into two smaller ice bodies and no evidence of an accumulation zone. We also found that the occurrence of an extremely hot and dry year, as observed in the 2021–2022 season, leads to a drastic degradation of the glacier, posing a high risk to the persistence of the Aneto glacier, a situation that could extend to the rest of the Pyrenean glaciers in a relatively short time. |
format |
Article in Journal/Newspaper |
author |
Vidaller, Ixeia Izagirre, Eñaut del Rio, Luis Mariano Alonso-González, Esteban Rojas-Heredia, Francisco Serrano, Enrique Moreno, Ana López-Moreno, Juan Ignacio Revuelto, Jesús |
author_facet |
Vidaller, Ixeia Izagirre, Eñaut del Rio, Luis Mariano Alonso-González, Esteban Rojas-Heredia, Francisco Serrano, Enrique Moreno, Ana López-Moreno, Juan Ignacio Revuelto, Jesús |
author_sort |
Vidaller, Ixeia |
title |
The Aneto glacier's (Central Pyrenees) evolution from 1981 to 2022: ice loss observed from historic aerial image photogrammetry and remote sensing techniques |
title_short |
The Aneto glacier's (Central Pyrenees) evolution from 1981 to 2022: ice loss observed from historic aerial image photogrammetry and remote sensing techniques |
title_full |
The Aneto glacier's (Central Pyrenees) evolution from 1981 to 2022: ice loss observed from historic aerial image photogrammetry and remote sensing techniques |
title_fullStr |
The Aneto glacier's (Central Pyrenees) evolution from 1981 to 2022: ice loss observed from historic aerial image photogrammetry and remote sensing techniques |
title_full_unstemmed |
The Aneto glacier's (Central Pyrenees) evolution from 1981 to 2022: ice loss observed from historic aerial image photogrammetry and remote sensing techniques |
title_sort |
aneto glacier's (central pyrenees) evolution from 1981 to 2022: ice loss observed from historic aerial image photogrammetry and remote sensing techniques |
publisher |
Copernicus Publications |
publishDate |
2023 |
url |
https://doi.org/10.5194/tc-17-3177-2023 https://noa.gwlb.de/receive/cop_mods_00068048 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00066483/tc-17-3177-2023.pdf https://tc.copernicus.org/articles/17/3177/2023/tc-17-3177-2023.pdf |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-17-3177-2023 https://noa.gwlb.de/receive/cop_mods_00068048 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00066483/tc-17-3177-2023.pdf https://tc.copernicus.org/articles/17/3177/2023/tc-17-3177-2023.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-17-3177-2023 |
container_title |
The Cryosphere |
container_volume |
17 |
container_issue |
8 |
container_start_page |
3177 |
op_container_end_page |
3192 |
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1776204302838136832 |