Properties and stratigraphy of polar ice patches in the Canadian High Arctic reveal their current resilience to warm summers
International audience Ice patches are ubiquitous in polar regions and are a key element for landscape evolution. We present new insights into polar desert ice patch formation based on snow and ice properties at Ward Hunt Island (Canadian High Arctic, 83°N). Our results demonstrate that ice patches...
Published in: | Arctic Science |
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ftunivnantes:oai:HAL:hal-03870767v1 2023-05-15T14:22:50+02:00 Properties and stratigraphy of polar ice patches in the Canadian High Arctic reveal their current resilience to warm summers Davesne, Gautier Fortier, Daniel Domine, Florent Takuvik Joint International Laboratory ULAVAL-CNRS Université Laval Québec (ULaval)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) 2022-02-25 https://hal.archives-ouvertes.fr/hal-03870767 https://hal.archives-ouvertes.fr/hal-03870767/document https://hal.archives-ouvertes.fr/hal-03870767/file/139-DavesneAS2021.pdf https://doi.org/10.1139/as-2021-0011 en eng HAL CCSD NRC Research Press info:eu-repo/semantics/altIdentifier/doi/10.1139/as-2021-0011 hal-03870767 https://hal.archives-ouvertes.fr/hal-03870767 https://hal.archives-ouvertes.fr/hal-03870767/document https://hal.archives-ouvertes.fr/hal-03870767/file/139-DavesneAS2021.pdf doi:10.1139/as-2021-0011 info:eu-repo/semantics/OpenAccess ISSN: 2368-7460 Arctic Science https://hal.archives-ouvertes.fr/hal-03870767 Arctic Science, 2022, 8 (2), pp.414 - 449. ⟨10.1139/as-2021-0011⟩ ice patch polar desert climate change snowpack slope hydrology [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2022 ftunivnantes https://doi.org/10.1139/as-2021-0011 2022-12-07T00:22:23Z International audience Ice patches are ubiquitous in polar regions and are a key element for landscape evolution. We present new insights into polar desert ice patch formation based on snow and ice properties at Ward Hunt Island (Canadian High Arctic, 83°N). Our results demonstrate that ice patches are composed of two distinct units. The upper unit is characterized by very fine granular and bubbly ice with a clear oblique layering. By contrast, the lower unit is strikingly different with coarse crystals, lower porosity, and a high frequency of fractures. For both units, superimposed ice formation at the base of the deep snowpack stands out as the primary ice aggradation process. The distinct properties of the lower unit likely result from a long period of kinetic ice crystal growth indicating a minimum age of several hundred years. A radiocarbon date of 3 487 ± 20 cal BP suggests that ice patches could potentially date back to the late Holocene. This old ice was recently truncated during warmer summers between 2008 and 2012, but the ice patch quickly recovered its volume during cooler summers. The old age of the ice patches and their rapid regeneration after melt events suggest their resilience to current warmer summers. Article in Journal/Newspaper Arctic Arctic Climate change polar desert Ward Hunt Island Université de Nantes: HAL-UNIV-NANTES Arctic Hunt Island ENVELOPE(-100.601,-100.601,58.788,58.788) Ward Hunt Island ENVELOPE(-74.161,-74.161,83.102,83.102) Arctic Science 8 2 414 449 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
ice patch polar desert climate change snowpack slope hydrology [SDE]Environmental Sciences |
spellingShingle |
ice patch polar desert climate change snowpack slope hydrology [SDE]Environmental Sciences Davesne, Gautier Fortier, Daniel Domine, Florent Properties and stratigraphy of polar ice patches in the Canadian High Arctic reveal their current resilience to warm summers |
topic_facet |
ice patch polar desert climate change snowpack slope hydrology [SDE]Environmental Sciences |
description |
International audience Ice patches are ubiquitous in polar regions and are a key element for landscape evolution. We present new insights into polar desert ice patch formation based on snow and ice properties at Ward Hunt Island (Canadian High Arctic, 83°N). Our results demonstrate that ice patches are composed of two distinct units. The upper unit is characterized by very fine granular and bubbly ice with a clear oblique layering. By contrast, the lower unit is strikingly different with coarse crystals, lower porosity, and a high frequency of fractures. For both units, superimposed ice formation at the base of the deep snowpack stands out as the primary ice aggradation process. The distinct properties of the lower unit likely result from a long period of kinetic ice crystal growth indicating a minimum age of several hundred years. A radiocarbon date of 3 487 ± 20 cal BP suggests that ice patches could potentially date back to the late Holocene. This old ice was recently truncated during warmer summers between 2008 and 2012, but the ice patch quickly recovered its volume during cooler summers. The old age of the ice patches and their rapid regeneration after melt events suggest their resilience to current warmer summers. |
author2 |
Takuvik Joint International Laboratory ULAVAL-CNRS Université Laval Québec (ULaval)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Davesne, Gautier Fortier, Daniel Domine, Florent |
author_facet |
Davesne, Gautier Fortier, Daniel Domine, Florent |
author_sort |
Davesne, Gautier |
title |
Properties and stratigraphy of polar ice patches in the Canadian High Arctic reveal their current resilience to warm summers |
title_short |
Properties and stratigraphy of polar ice patches in the Canadian High Arctic reveal their current resilience to warm summers |
title_full |
Properties and stratigraphy of polar ice patches in the Canadian High Arctic reveal their current resilience to warm summers |
title_fullStr |
Properties and stratigraphy of polar ice patches in the Canadian High Arctic reveal their current resilience to warm summers |
title_full_unstemmed |
Properties and stratigraphy of polar ice patches in the Canadian High Arctic reveal their current resilience to warm summers |
title_sort |
properties and stratigraphy of polar ice patches in the canadian high arctic reveal their current resilience to warm summers |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.archives-ouvertes.fr/hal-03870767 https://hal.archives-ouvertes.fr/hal-03870767/document https://hal.archives-ouvertes.fr/hal-03870767/file/139-DavesneAS2021.pdf https://doi.org/10.1139/as-2021-0011 |
long_lat |
ENVELOPE(-100.601,-100.601,58.788,58.788) ENVELOPE(-74.161,-74.161,83.102,83.102) |
geographic |
Arctic Hunt Island Ward Hunt Island |
geographic_facet |
Arctic Hunt Island Ward Hunt Island |
genre |
Arctic Arctic Climate change polar desert Ward Hunt Island |
genre_facet |
Arctic Arctic Climate change polar desert Ward Hunt Island |
op_source |
ISSN: 2368-7460 Arctic Science https://hal.archives-ouvertes.fr/hal-03870767 Arctic Science, 2022, 8 (2), pp.414 - 449. ⟨10.1139/as-2021-0011⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1139/as-2021-0011 hal-03870767 https://hal.archives-ouvertes.fr/hal-03870767 https://hal.archives-ouvertes.fr/hal-03870767/document https://hal.archives-ouvertes.fr/hal-03870767/file/139-DavesneAS2021.pdf doi:10.1139/as-2021-0011 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1139/as-2021-0011 |
container_title |
Arctic Science |
container_volume |
8 |
container_issue |
2 |
container_start_page |
414 |
op_container_end_page |
449 |
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1766295358656217088 |