Change at 85 degrees south: Shackleton Glacier region proglacial lakes from 1960 to 2020
Abstract Over the last two decades, anomalous warming events have been observed in coastal Antarctic regions. While these events have been documented in the Ross Sea sector, the Antarctic interior is believed to have been buffered from warming. In this work, we present data from lakes located near M...
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crcambridgeupr:10.1017/aog.2023.27 2024-06-09T07:38:26+00:00 Change at 85 degrees south: Shackleton Glacier region proglacial lakes from 1960 to 2020 Diaz, Melisa A. Gardner, Christopher B. Elliot, David H. Adams, Byron J. Lyons, W. Berry National Science Foundation National Science Foundation National Science Foundation National Science Foundation 2023 http://dx.doi.org/10.1017/aog.2023.27 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0260305523000277 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by/4.0/ Annals of Glaciology page 1-6 ISSN 0260-3055 1727-5644 journal-article 2023 crcambridgeupr https://doi.org/10.1017/aog.2023.27 2024-05-15T13:16:26Z Abstract Over the last two decades, anomalous warming events have been observed in coastal Antarctic regions. While these events have been documented in the Ross Sea sector, the Antarctic interior is believed to have been buffered from warming. In this work, we present data from lakes located near Mt. Heekin and Thanksgiving Valley (~85° S) along the Shackleton Glacier, which are believed to be the southern-most Antarctic dry valley lakes. In 2018, the lakes were characterized, repeat satellite images were examined, and lake water chemistry was measured. Our analysis shows that lake areas recently increased, and the water-soluble ion chemistry indicates a flushing of salts from periglacial soils, likely from increased glacial melt as illustrated by water isotope data. Our results show that high southern latitude ice-free areas have likely been affected by warm pulses over the past 60 years and these pulses may be quasi-synchronous throughout the Transantarctic Mountains. Article in Journal/Newspaper Annals of Glaciology Antarc* Antarctic Ross Sea Shackleton Glacier Cambridge University Press Antarctic Heekin ENVELOPE(-177.267,-177.267,-85.050,-85.050) Ross Sea Shackleton Shackleton Glacier ENVELOPE(-37.200,-37.200,-54.133,-54.133) The Antarctic Transantarctic Mountains Annals of Glaciology 1 6 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
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English |
description |
Abstract Over the last two decades, anomalous warming events have been observed in coastal Antarctic regions. While these events have been documented in the Ross Sea sector, the Antarctic interior is believed to have been buffered from warming. In this work, we present data from lakes located near Mt. Heekin and Thanksgiving Valley (~85° S) along the Shackleton Glacier, which are believed to be the southern-most Antarctic dry valley lakes. In 2018, the lakes were characterized, repeat satellite images were examined, and lake water chemistry was measured. Our analysis shows that lake areas recently increased, and the water-soluble ion chemistry indicates a flushing of salts from periglacial soils, likely from increased glacial melt as illustrated by water isotope data. Our results show that high southern latitude ice-free areas have likely been affected by warm pulses over the past 60 years and these pulses may be quasi-synchronous throughout the Transantarctic Mountains. |
author2 |
National Science Foundation National Science Foundation National Science Foundation National Science Foundation |
format |
Article in Journal/Newspaper |
author |
Diaz, Melisa A. Gardner, Christopher B. Elliot, David H. Adams, Byron J. Lyons, W. Berry |
spellingShingle |
Diaz, Melisa A. Gardner, Christopher B. Elliot, David H. Adams, Byron J. Lyons, W. Berry Change at 85 degrees south: Shackleton Glacier region proglacial lakes from 1960 to 2020 |
author_facet |
Diaz, Melisa A. Gardner, Christopher B. Elliot, David H. Adams, Byron J. Lyons, W. Berry |
author_sort |
Diaz, Melisa A. |
title |
Change at 85 degrees south: Shackleton Glacier region proglacial lakes from 1960 to 2020 |
title_short |
Change at 85 degrees south: Shackleton Glacier region proglacial lakes from 1960 to 2020 |
title_full |
Change at 85 degrees south: Shackleton Glacier region proglacial lakes from 1960 to 2020 |
title_fullStr |
Change at 85 degrees south: Shackleton Glacier region proglacial lakes from 1960 to 2020 |
title_full_unstemmed |
Change at 85 degrees south: Shackleton Glacier region proglacial lakes from 1960 to 2020 |
title_sort |
change at 85 degrees south: shackleton glacier region proglacial lakes from 1960 to 2020 |
publisher |
Cambridge University Press (CUP) |
publishDate |
2023 |
url |
http://dx.doi.org/10.1017/aog.2023.27 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0260305523000277 |
long_lat |
ENVELOPE(-177.267,-177.267,-85.050,-85.050) ENVELOPE(-37.200,-37.200,-54.133,-54.133) |
geographic |
Antarctic Heekin Ross Sea Shackleton Shackleton Glacier The Antarctic Transantarctic Mountains |
geographic_facet |
Antarctic Heekin Ross Sea Shackleton Shackleton Glacier The Antarctic Transantarctic Mountains |
genre |
Annals of Glaciology Antarc* Antarctic Ross Sea Shackleton Glacier |
genre_facet |
Annals of Glaciology Antarc* Antarctic Ross Sea Shackleton Glacier |
op_source |
Annals of Glaciology page 1-6 ISSN 0260-3055 1727-5644 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/aog.2023.27 |
container_title |
Annals of Glaciology |
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1 |
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6 |
_version_ |
1801372936259502080 |