Glacial melt and potential impacts on water resources in the Canadian Rocky Mountains
International audience As a result of global climate change, glacial melt occurs worldwide. Major impacts are expected on the dynamics of aquifers and rivers in and downstream of mountain ranges. This study aims at quantifying the melt water input fluxes into the watersheds draining the Canadian Roc...
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Online Access: | https://insu.hal.science/insu-02369819 https://insu.hal.science/insu-02369819/document https://insu.hal.science/insu-02369819/file/Castellazzi_et_al-2019-Water_Resources_Research.pdf https://doi.org/10.1029/2018WR024295 |
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ftunivrennes1hal:oai:HAL:insu-02369819v1 2024-02-11T10:01:31+01:00 Glacial melt and potential impacts on water resources in the Canadian Rocky Mountains Castellazzi, Pascal Burgess, D. Rivera, Alfonso Huang, J. Longuevergne, Laurent Demuth, Michael, N. Geological Survey of Canada Québec (GSC Québec) Geological Survey of Canada - Office (GSC) Natural Resources Canada (NRCan)-Natural Resources Canada (NRCan) Canadian Geodetic Survey Géosciences Rennes (GR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS) 2019-12 https://insu.hal.science/insu-02369819 https://insu.hal.science/insu-02369819/document https://insu.hal.science/insu-02369819/file/Castellazzi_et_al-2019-Water_Resources_Research.pdf https://doi.org/10.1029/2018WR024295 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2018WR024295 insu-02369819 https://insu.hal.science/insu-02369819 https://insu.hal.science/insu-02369819/document https://insu.hal.science/insu-02369819/file/Castellazzi_et_al-2019-Water_Resources_Research.pdf doi:10.1029/2018WR024295 info:eu-repo/semantics/OpenAccess ISSN: 0043-1397 EISSN: 1944-7973 Water Resources Research https://insu.hal.science/insu-02369819 Water Resources Research, 2019, 55 (12), pp.10191-10217. ⟨10.1029/2018WR024295⟩ [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology info:eu-repo/semantics/article Journal articles 2019 ftunivrennes1hal https://doi.org/10.1029/2018WR024295 2024-01-23T23:52:15Z International audience As a result of global climate change, glacial melt occurs worldwide. Major impacts are expected on the dynamics of aquifers and rivers in and downstream of mountain ranges. This study aims at quantifying the melt water input fluxes into the watersheds draining the Canadian Rocky Mountains and improving our knowledge about the fate of meltwater within the hydrological cycle. To this end, we use (1) time‐variable gravity data from GRACE satellites that is decomposed into water storage change; (2) an ensemble of glacier information: in situ observations, geodetic measurements, and a mass balance model and (3) in situ surface water and groundwater level observations. The glacier mass balance model estimates a total ice mass change of ~43 Gt for the period 2002‐2015, corresponding to an average of ‐3,056 (±2,275) MCM/yr. 78% of the meltwater total flows West of the continental divide (to the Pacific Ocean), while 22% flows East of the continental divide (to the Arctic Ocean and Hudson Bay). However, the GRACE‐derived total water storage increases, suggesting that groundwater storage compensates for the glacial melt with an increase of 3,976 (± 2,819) MCM/yr. A plausible explanation is that meltwater is not immediately flowing down in rivers but rather stored locally in aquifers. This hypothesis is supported by in situ river base flow observations, showing base flow increase in basins draining the ice melt, mostly west of the continental divide. Direct in situ evidences such as well water level time‐series are not sufficiently available to fully support this hypothesis. Article in Journal/Newspaper Arctic Arctic Ocean Climate change Hudson Bay Université de Rennes 1: Publications scientifiques (HAL) Arctic Arctic Ocean Hudson Hudson Bay Pacific Water Resources Research 55 12 10191 10217 |
institution |
Open Polar |
collection |
Université de Rennes 1: Publications scientifiques (HAL) |
op_collection_id |
ftunivrennes1hal |
language |
English |
topic |
[SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology |
spellingShingle |
[SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology Castellazzi, Pascal Burgess, D. Rivera, Alfonso Huang, J. Longuevergne, Laurent Demuth, Michael, N. Glacial melt and potential impacts on water resources in the Canadian Rocky Mountains |
topic_facet |
[SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology |
description |
International audience As a result of global climate change, glacial melt occurs worldwide. Major impacts are expected on the dynamics of aquifers and rivers in and downstream of mountain ranges. This study aims at quantifying the melt water input fluxes into the watersheds draining the Canadian Rocky Mountains and improving our knowledge about the fate of meltwater within the hydrological cycle. To this end, we use (1) time‐variable gravity data from GRACE satellites that is decomposed into water storage change; (2) an ensemble of glacier information: in situ observations, geodetic measurements, and a mass balance model and (3) in situ surface water and groundwater level observations. The glacier mass balance model estimates a total ice mass change of ~43 Gt for the period 2002‐2015, corresponding to an average of ‐3,056 (±2,275) MCM/yr. 78% of the meltwater total flows West of the continental divide (to the Pacific Ocean), while 22% flows East of the continental divide (to the Arctic Ocean and Hudson Bay). However, the GRACE‐derived total water storage increases, suggesting that groundwater storage compensates for the glacial melt with an increase of 3,976 (± 2,819) MCM/yr. A plausible explanation is that meltwater is not immediately flowing down in rivers but rather stored locally in aquifers. This hypothesis is supported by in situ river base flow observations, showing base flow increase in basins draining the ice melt, mostly west of the continental divide. Direct in situ evidences such as well water level time‐series are not sufficiently available to fully support this hypothesis. |
author2 |
Geological Survey of Canada Québec (GSC Québec) Geological Survey of Canada - Office (GSC) Natural Resources Canada (NRCan)-Natural Resources Canada (NRCan) Canadian Geodetic Survey Géosciences Rennes (GR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Castellazzi, Pascal Burgess, D. Rivera, Alfonso Huang, J. Longuevergne, Laurent Demuth, Michael, N. |
author_facet |
Castellazzi, Pascal Burgess, D. Rivera, Alfonso Huang, J. Longuevergne, Laurent Demuth, Michael, N. |
author_sort |
Castellazzi, Pascal |
title |
Glacial melt and potential impacts on water resources in the Canadian Rocky Mountains |
title_short |
Glacial melt and potential impacts on water resources in the Canadian Rocky Mountains |
title_full |
Glacial melt and potential impacts on water resources in the Canadian Rocky Mountains |
title_fullStr |
Glacial melt and potential impacts on water resources in the Canadian Rocky Mountains |
title_full_unstemmed |
Glacial melt and potential impacts on water resources in the Canadian Rocky Mountains |
title_sort |
glacial melt and potential impacts on water resources in the canadian rocky mountains |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://insu.hal.science/insu-02369819 https://insu.hal.science/insu-02369819/document https://insu.hal.science/insu-02369819/file/Castellazzi_et_al-2019-Water_Resources_Research.pdf https://doi.org/10.1029/2018WR024295 |
geographic |
Arctic Arctic Ocean Hudson Hudson Bay Pacific |
geographic_facet |
Arctic Arctic Ocean Hudson Hudson Bay Pacific |
genre |
Arctic Arctic Ocean Climate change Hudson Bay |
genre_facet |
Arctic Arctic Ocean Climate change Hudson Bay |
op_source |
ISSN: 0043-1397 EISSN: 1944-7973 Water Resources Research https://insu.hal.science/insu-02369819 Water Resources Research, 2019, 55 (12), pp.10191-10217. ⟨10.1029/2018WR024295⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2018WR024295 insu-02369819 https://insu.hal.science/insu-02369819 https://insu.hal.science/insu-02369819/document https://insu.hal.science/insu-02369819/file/Castellazzi_et_al-2019-Water_Resources_Research.pdf doi:10.1029/2018WR024295 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2018WR024295 |
container_title |
Water Resources Research |
container_volume |
55 |
container_issue |
12 |
container_start_page |
10191 |
op_container_end_page |
10217 |
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1790597319665647616 |