Properties and stratigraphy of polar ice patches in the Canadian High Arctic reveal their current resilience to warm summers
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 dis...
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crcansciencepubl:10.1139/as-2021-0011 2024-04-28T08:03:54+00:00 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 2022 http://dx.doi.org/10.1139/as-2021-0011 https://cdnsciencepub.com/doi/full-xml/10.1139/as-2021-0011 https://cdnsciencepub.com/doi/pdf/10.1139/as-2021-0011 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Arctic Science volume 8, issue 2, page 414-449 ISSN 2368-7460 2368-7460 General Earth and Planetary Sciences General Agricultural and Biological Sciences General Environmental Science journal-article 2022 crcansciencepubl https://doi.org/10.1139/as-2021-0011 2024-04-09T06:56:28Z 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 polar desert Ward Hunt Island Canadian Science Publishing Arctic Science 1 36 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences General Agricultural and Biological Sciences General Environmental Science |
spellingShingle |
General Earth and Planetary Sciences General Agricultural and Biological Sciences General Environmental Science 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 |
General Earth and Planetary Sciences General Agricultural and Biological Sciences General Environmental Science |
description |
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. |
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 |
Canadian Science Publishing |
publishDate |
2022 |
url |
http://dx.doi.org/10.1139/as-2021-0011 https://cdnsciencepub.com/doi/full-xml/10.1139/as-2021-0011 https://cdnsciencepub.com/doi/pdf/10.1139/as-2021-0011 |
genre |
Arctic Arctic polar desert Ward Hunt Island |
genre_facet |
Arctic Arctic polar desert Ward Hunt Island |
op_source |
Arctic Science volume 8, issue 2, page 414-449 ISSN 2368-7460 2368-7460 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/as-2021-0011 |
container_title |
Arctic Science |
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1 |
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36 |
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1797574875396702208 |