A hydrogeological conceptual model of aquifers in catchments headed by temperate glaciers
For reliable forecasting of the evolution of critical water resources, as well as of potential flood and landslide hazards and their response to climate change, it is necessary to improve the understanding and quantification of unknown aquifer systems in glacierized catchments. We focus on four sout...
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ftcopernicus:oai:publications.copernicus.org:hess108423 2024-09-15T18:11:47+00:00 A hydrogeological conceptual model of aquifers in catchments headed by temperate glaciers Vincent, Aude Daigre, Clémence Fischer, Ophélie Aðalgeirsdóttir, Guðfinna Violette, Sophie Hart, Jane Guðmundsson, Snævarr Pálsson, Finnur 2024-07-31 application/pdf https://doi.org/10.5194/hess-28-3475-2024 https://hess.copernicus.org/articles/28/3475/2024/ eng eng doi:10.5194/hess-28-3475-2024 https://hess.copernicus.org/articles/28/3475/2024/ eISSN: 1607-7938 Text 2024 ftcopernicus https://doi.org/10.5194/hess-28-3475-2024 2024-08-05T14:04:48Z For reliable forecasting of the evolution of critical water resources, as well as of potential flood and landslide hazards and their response to climate change, it is necessary to improve the understanding and quantification of unknown aquifer systems in glacierized catchments. We focus on four southeastern outlet glaciers of the main Icelandic ice cap, Vatnajökull. A multidisciplinary approach is carried out, including the acquisition of new in situ data to characterize aquifers and their groundwater dynamics. Moreover, the recharge to aquifers from glacial melt and effective rainfall is estimated. From a detailed analysis of all available data and the determination of the dynamic characteristics of the aquifers, a hydrogeological conceptual model of glacierized catchments is constructed: (i) two distinct aquifers, their hydraulic conductivities and their hydrodynamic responses to climate forcing are identified; (ii) a comprehensive water balance for the whole catchment is obtained; (iii) the subglacial recharge to the aquifers is shown to be 4 times higher than in the proglacial area; and (v) the importance of the impact of the glacial melt recharge on the groundwater system is demonstrated. Thus, we highlight the major role that the groundwater component has in the hydrodynamic functioning of glacierized catchments. Text Ice cap Vatnajökull Copernicus Publications: E-Journals Hydrology and Earth System Sciences 28 14 3475 3494 |
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English |
description |
For reliable forecasting of the evolution of critical water resources, as well as of potential flood and landslide hazards and their response to climate change, it is necessary to improve the understanding and quantification of unknown aquifer systems in glacierized catchments. We focus on four southeastern outlet glaciers of the main Icelandic ice cap, Vatnajökull. A multidisciplinary approach is carried out, including the acquisition of new in situ data to characterize aquifers and their groundwater dynamics. Moreover, the recharge to aquifers from glacial melt and effective rainfall is estimated. From a detailed analysis of all available data and the determination of the dynamic characteristics of the aquifers, a hydrogeological conceptual model of glacierized catchments is constructed: (i) two distinct aquifers, their hydraulic conductivities and their hydrodynamic responses to climate forcing are identified; (ii) a comprehensive water balance for the whole catchment is obtained; (iii) the subglacial recharge to the aquifers is shown to be 4 times higher than in the proglacial area; and (v) the importance of the impact of the glacial melt recharge on the groundwater system is demonstrated. Thus, we highlight the major role that the groundwater component has in the hydrodynamic functioning of glacierized catchments. |
format |
Text |
author |
Vincent, Aude Daigre, Clémence Fischer, Ophélie Aðalgeirsdóttir, Guðfinna Violette, Sophie Hart, Jane Guðmundsson, Snævarr Pálsson, Finnur |
spellingShingle |
Vincent, Aude Daigre, Clémence Fischer, Ophélie Aðalgeirsdóttir, Guðfinna Violette, Sophie Hart, Jane Guðmundsson, Snævarr Pálsson, Finnur A hydrogeological conceptual model of aquifers in catchments headed by temperate glaciers |
author_facet |
Vincent, Aude Daigre, Clémence Fischer, Ophélie Aðalgeirsdóttir, Guðfinna Violette, Sophie Hart, Jane Guðmundsson, Snævarr Pálsson, Finnur |
author_sort |
Vincent, Aude |
title |
A hydrogeological conceptual model of aquifers in catchments headed by temperate glaciers |
title_short |
A hydrogeological conceptual model of aquifers in catchments headed by temperate glaciers |
title_full |
A hydrogeological conceptual model of aquifers in catchments headed by temperate glaciers |
title_fullStr |
A hydrogeological conceptual model of aquifers in catchments headed by temperate glaciers |
title_full_unstemmed |
A hydrogeological conceptual model of aquifers in catchments headed by temperate glaciers |
title_sort |
hydrogeological conceptual model of aquifers in catchments headed by temperate glaciers |
publishDate |
2024 |
url |
https://doi.org/10.5194/hess-28-3475-2024 https://hess.copernicus.org/articles/28/3475/2024/ |
genre |
Ice cap Vatnajökull |
genre_facet |
Ice cap Vatnajökull |
op_source |
eISSN: 1607-7938 |
op_relation |
doi:10.5194/hess-28-3475-2024 https://hess.copernicus.org/articles/28/3475/2024/ |
op_doi |
https://doi.org/10.5194/hess-28-3475-2024 |
container_title |
Hydrology and Earth System Sciences |
container_volume |
28 |
container_issue |
14 |
container_start_page |
3475 |
op_container_end_page |
3494 |
_version_ |
1810449352522465280 |