Glacier meltwater flow paths and storage in a geomorphologically complex glacial foreland: The case of the Tapado glacier, dry Andes of Chile (30°S)
International audience The Tapado catchment is located in the upper Elqui river basin (4000–5550 m) in northern Chile. It comprises the Tapado glacial complex, which is an assemblage of the Tapado glacier and the glacial foreland (debris-covered glacier, rock glacier, and moraines). Although the hyd...
Published in: | Journal of Hydrology |
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Main Authors: | , , , , |
Other Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2014
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Online Access: | https://hal.science/hal-01218734 https://doi.org/10.1016/j.jhydrol.2014.08.023 |
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ftunivnantes:oai:HAL:hal-01218734v1 |
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openpolar |
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Open Polar |
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Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Thermokarst Water transfers Rock glacier Cryosphere hydrology Debris-covered glacier Semiarid Andes [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology |
spellingShingle |
Thermokarst Water transfers Rock glacier Cryosphere hydrology Debris-covered glacier Semiarid Andes [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology Pourrier, Jonathan Jourde, Hervé Kinnard, Christophe Gascoin, Simon Monnier, Sébastien Glacier meltwater flow paths and storage in a geomorphologically complex glacial foreland: The case of the Tapado glacier, dry Andes of Chile (30°S) |
topic_facet |
Thermokarst Water transfers Rock glacier Cryosphere hydrology Debris-covered glacier Semiarid Andes [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology |
description |
International audience The Tapado catchment is located in the upper Elqui river basin (4000–5550 m) in northern Chile. It comprises the Tapado glacial complex, which is an assemblage of the Tapado glacier and the glacial foreland (debris-covered glacier, rock glacier, and moraines). Although the hydrological functioning of this catchment is poorly known, it is assumed to actively supply water to the lower semi-arid areas of the Elqui river basin. To improve our knowledge of the interactions and water transfers between the cryospheric compartment (glacier, debris-covered glacier, and rock glacier) and the hydrological compartment (aquifers, streams), the results of monitoring of meteorological conditions, as well as discharge, conductivity and temperature of streams and springs located in the Tapado catchment were analyzed. The hydrological results are compared to results inferred from a ground penetrating radar (GPR) survey of the underground structure of the glacial foreland. Water production from the Tapado glacier was shown to be highly correlated with daily and monthly weather conditions, particularly solar radiation and temperature. The resulting daily and monthly streamflow cycles were buffered by the glacial foreland, where underground transfers took place through complex flow paths. However, the development of a thermokarst drainage network in a portion of the glacial foreland enabled rapid concentrated water transfers that reduced the buffer effect. The glacial foreland was shown to act as a reservoir, storing water during high melt periods and supplying water to downstream compartments during low melt periods. GPR observations revealed the heterogeneity of the internal structure of the glacial foreland, which is composed of a mixture of ice and rock debris mixture, with variable spatial ice content, including massive ice lenses. This heterogeneity may explain the abovementioned hydrological behaviors. Finally, calculation of a partial hydrological budget confirmed the importance of the Tapado ... |
author2 |
Hydrosciences Montpellier (HSM) Institut de Recherche pour le Développement (IRD)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Centro de Estudios Avanzados en Zonas Aridas (CEAZA) Université du Québec à Trois-Rivières (UQTR) Centre d'études spatiales de la biosphère (CESBIO) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Pontificia Universidad Católica de Valparaíso (PUCV) |
format |
Article in Journal/Newspaper |
author |
Pourrier, Jonathan Jourde, Hervé Kinnard, Christophe Gascoin, Simon Monnier, Sébastien |
author_facet |
Pourrier, Jonathan Jourde, Hervé Kinnard, Christophe Gascoin, Simon Monnier, Sébastien |
author_sort |
Pourrier, Jonathan |
title |
Glacier meltwater flow paths and storage in a geomorphologically complex glacial foreland: The case of the Tapado glacier, dry Andes of Chile (30°S) |
title_short |
Glacier meltwater flow paths and storage in a geomorphologically complex glacial foreland: The case of the Tapado glacier, dry Andes of Chile (30°S) |
title_full |
Glacier meltwater flow paths and storage in a geomorphologically complex glacial foreland: The case of the Tapado glacier, dry Andes of Chile (30°S) |
title_fullStr |
Glacier meltwater flow paths and storage in a geomorphologically complex glacial foreland: The case of the Tapado glacier, dry Andes of Chile (30°S) |
title_full_unstemmed |
Glacier meltwater flow paths and storage in a geomorphologically complex glacial foreland: The case of the Tapado glacier, dry Andes of Chile (30°S) |
title_sort |
glacier meltwater flow paths and storage in a geomorphologically complex glacial foreland: the case of the tapado glacier, dry andes of chile (30°s) |
publisher |
HAL CCSD |
publishDate |
2014 |
url |
https://hal.science/hal-01218734 https://doi.org/10.1016/j.jhydrol.2014.08.023 |
genre |
Thermokarst |
genre_facet |
Thermokarst |
op_source |
ISSN: 0022-1694 Journal of Hydrology https://hal.science/hal-01218734 Journal of Hydrology, 2014, 519, pp.1068--1083. ⟨10.1016/j.jhydrol.2014.08.023⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jhydrol.2014.08.023 hal-01218734 https://hal.science/hal-01218734 doi:10.1016/j.jhydrol.2014.08.023 |
op_doi |
https://doi.org/10.1016/j.jhydrol.2014.08.023 |
container_title |
Journal of Hydrology |
container_volume |
519 |
container_start_page |
1068 |
op_container_end_page |
1083 |
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1766217183468191744 |
spelling |
ftunivnantes:oai:HAL:hal-01218734v1 2023-05-15T18:32:58+02:00 Glacier meltwater flow paths and storage in a geomorphologically complex glacial foreland: The case of the Tapado glacier, dry Andes of Chile (30°S) Pourrier, Jonathan Jourde, Hervé Kinnard, Christophe Gascoin, Simon Monnier, Sébastien Hydrosciences Montpellier (HSM) Institut de Recherche pour le Développement (IRD)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Centro de Estudios Avanzados en Zonas Aridas (CEAZA) Université du Québec à Trois-Rivières (UQTR) Centre d'études spatiales de la biosphère (CESBIO) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Pontificia Universidad Católica de Valparaíso (PUCV) 2014-11 https://hal.science/hal-01218734 https://doi.org/10.1016/j.jhydrol.2014.08.023 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jhydrol.2014.08.023 hal-01218734 https://hal.science/hal-01218734 doi:10.1016/j.jhydrol.2014.08.023 ISSN: 0022-1694 Journal of Hydrology https://hal.science/hal-01218734 Journal of Hydrology, 2014, 519, pp.1068--1083. ⟨10.1016/j.jhydrol.2014.08.023⟩ Thermokarst Water transfers Rock glacier Cryosphere hydrology Debris-covered glacier Semiarid Andes [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology info:eu-repo/semantics/article Journal articles 2014 ftunivnantes https://doi.org/10.1016/j.jhydrol.2014.08.023 2023-02-22T10:38:31Z International audience The Tapado catchment is located in the upper Elqui river basin (4000–5550 m) in northern Chile. It comprises the Tapado glacial complex, which is an assemblage of the Tapado glacier and the glacial foreland (debris-covered glacier, rock glacier, and moraines). Although the hydrological functioning of this catchment is poorly known, it is assumed to actively supply water to the lower semi-arid areas of the Elqui river basin. To improve our knowledge of the interactions and water transfers between the cryospheric compartment (glacier, debris-covered glacier, and rock glacier) and the hydrological compartment (aquifers, streams), the results of monitoring of meteorological conditions, as well as discharge, conductivity and temperature of streams and springs located in the Tapado catchment were analyzed. The hydrological results are compared to results inferred from a ground penetrating radar (GPR) survey of the underground structure of the glacial foreland. Water production from the Tapado glacier was shown to be highly correlated with daily and monthly weather conditions, particularly solar radiation and temperature. The resulting daily and monthly streamflow cycles were buffered by the glacial foreland, where underground transfers took place through complex flow paths. However, the development of a thermokarst drainage network in a portion of the glacial foreland enabled rapid concentrated water transfers that reduced the buffer effect. The glacial foreland was shown to act as a reservoir, storing water during high melt periods and supplying water to downstream compartments during low melt periods. GPR observations revealed the heterogeneity of the internal structure of the glacial foreland, which is composed of a mixture of ice and rock debris mixture, with variable spatial ice content, including massive ice lenses. This heterogeneity may explain the abovementioned hydrological behaviors. Finally, calculation of a partial hydrological budget confirmed the importance of the Tapado ... Article in Journal/Newspaper Thermokarst Université de Nantes: HAL-UNIV-NANTES Journal of Hydrology 519 1068 1083 |