Evolution of the Cook Ice Cap (Kerguelen Islands) between the last centuries and 2100 ce based on cosmogenic dating and glacio-climatic modelling
Abstract The Cook Ice Cap (CIC) on the sub-Antarctic Kerguelen Islands recently experienced extremely negative surface mass balance. Further deglaciation could have important impacts on endemic and invasive fauna and flora. To put this exceptional glacier evolution into a multi-centennial-scale cont...
Published in: | Antarctic Science |
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Language: | English |
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Cambridge University Press (CUP)
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Online Access: | http://dx.doi.org/10.1017/s0954102021000080 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102021000080 |
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crcambridgeupr:10.1017/s0954102021000080 2024-09-15T17:48:07+00:00 Evolution of the Cook Ice Cap (Kerguelen Islands) between the last centuries and 2100 ce based on cosmogenic dating and glacio-climatic modelling Verfaillie, Deborah Charton, Joanna Schimmelpfennig, Irene Stroebele, Zoe Jomelli, Vincent Bétard, François Favier, Vincent Cavero, Julien Berthier, Etienne Goosse, Hugues Rinterknecht, Vincent Legentil, Claude Charrassin, Raphaelle Aumaître, Georges Bourlès, Didier L. Keddadouche, Karim 2021 http://dx.doi.org/10.1017/s0954102021000080 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102021000080 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 33, issue 3, page 301-317 ISSN 0954-1020 1365-2079 journal-article 2021 crcambridgeupr https://doi.org/10.1017/s0954102021000080 2024-07-17T04:04:09Z Abstract The Cook Ice Cap (CIC) on the sub-Antarctic Kerguelen Islands recently experienced extremely negative surface mass balance. Further deglaciation could have important impacts on endemic and invasive fauna and flora. To put this exceptional glacier evolution into a multi-centennial-scale context, we refined the evolution of the CIC over the last millennium, investigated the associated climate conditions and explored its potential evolution by 2100 ce . A glaciological model, constrained by cosmic ray exposure dating of moraines, historical documents and recent direct mass balance observations, was used to simulate the ice-cap extents during different phases of advance and retreat between the last millennium and 2100 ce . Cosmogenic dating suggests glacial advance around the early Little Ice Age (LIA), consistent with findings from other sub-Antarctic studies, and the rather cold and humid conditions brought about by the negative phase of the Southern Annular Mode (SAM). This study contributes to our currently limited understanding of palaeoclimate for the early LIA in the southern Indian Ocean. Glaciological modelling and observations confirm the recent decrease in CIC extent linked to the intensification of the SAM. Although affected by large uncertainties, future simulations suggest a complete disappearance of CIC by the end of the century. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Ice cap Kerguelen Islands Cambridge University Press Antarctic Science 33 3 301 317 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract The Cook Ice Cap (CIC) on the sub-Antarctic Kerguelen Islands recently experienced extremely negative surface mass balance. Further deglaciation could have important impacts on endemic and invasive fauna and flora. To put this exceptional glacier evolution into a multi-centennial-scale context, we refined the evolution of the CIC over the last millennium, investigated the associated climate conditions and explored its potential evolution by 2100 ce . A glaciological model, constrained by cosmic ray exposure dating of moraines, historical documents and recent direct mass balance observations, was used to simulate the ice-cap extents during different phases of advance and retreat between the last millennium and 2100 ce . Cosmogenic dating suggests glacial advance around the early Little Ice Age (LIA), consistent with findings from other sub-Antarctic studies, and the rather cold and humid conditions brought about by the negative phase of the Southern Annular Mode (SAM). This study contributes to our currently limited understanding of palaeoclimate for the early LIA in the southern Indian Ocean. Glaciological modelling and observations confirm the recent decrease in CIC extent linked to the intensification of the SAM. Although affected by large uncertainties, future simulations suggest a complete disappearance of CIC by the end of the century. |
format |
Article in Journal/Newspaper |
author |
Verfaillie, Deborah Charton, Joanna Schimmelpfennig, Irene Stroebele, Zoe Jomelli, Vincent Bétard, François Favier, Vincent Cavero, Julien Berthier, Etienne Goosse, Hugues Rinterknecht, Vincent Legentil, Claude Charrassin, Raphaelle Aumaître, Georges Bourlès, Didier L. Keddadouche, Karim |
spellingShingle |
Verfaillie, Deborah Charton, Joanna Schimmelpfennig, Irene Stroebele, Zoe Jomelli, Vincent Bétard, François Favier, Vincent Cavero, Julien Berthier, Etienne Goosse, Hugues Rinterknecht, Vincent Legentil, Claude Charrassin, Raphaelle Aumaître, Georges Bourlès, Didier L. Keddadouche, Karim Evolution of the Cook Ice Cap (Kerguelen Islands) between the last centuries and 2100 ce based on cosmogenic dating and glacio-climatic modelling |
author_facet |
Verfaillie, Deborah Charton, Joanna Schimmelpfennig, Irene Stroebele, Zoe Jomelli, Vincent Bétard, François Favier, Vincent Cavero, Julien Berthier, Etienne Goosse, Hugues Rinterknecht, Vincent Legentil, Claude Charrassin, Raphaelle Aumaître, Georges Bourlès, Didier L. Keddadouche, Karim |
author_sort |
Verfaillie, Deborah |
title |
Evolution of the Cook Ice Cap (Kerguelen Islands) between the last centuries and 2100 ce based on cosmogenic dating and glacio-climatic modelling |
title_short |
Evolution of the Cook Ice Cap (Kerguelen Islands) between the last centuries and 2100 ce based on cosmogenic dating and glacio-climatic modelling |
title_full |
Evolution of the Cook Ice Cap (Kerguelen Islands) between the last centuries and 2100 ce based on cosmogenic dating and glacio-climatic modelling |
title_fullStr |
Evolution of the Cook Ice Cap (Kerguelen Islands) between the last centuries and 2100 ce based on cosmogenic dating and glacio-climatic modelling |
title_full_unstemmed |
Evolution of the Cook Ice Cap (Kerguelen Islands) between the last centuries and 2100 ce based on cosmogenic dating and glacio-climatic modelling |
title_sort |
evolution of the cook ice cap (kerguelen islands) between the last centuries and 2100 ce based on cosmogenic dating and glacio-climatic modelling |
publisher |
Cambridge University Press (CUP) |
publishDate |
2021 |
url |
http://dx.doi.org/10.1017/s0954102021000080 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102021000080 |
genre |
Antarc* Antarctic Antarctic Science Ice cap Kerguelen Islands |
genre_facet |
Antarc* Antarctic Antarctic Science Ice cap Kerguelen Islands |
op_source |
Antarctic Science volume 33, issue 3, page 301-317 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102021000080 |
container_title |
Antarctic Science |
container_volume |
33 |
container_issue |
3 |
container_start_page |
301 |
op_container_end_page |
317 |
_version_ |
1810289249105215488 |