Regional variability of diatoms in ice cores from the Antarctic Peninsula and Ellsworth Land, Antarctica
The presence of marine microfossils (diatoms) in glacier ice and ice cores has been documented from numerous sites in Antarctica, Greenland, as well as from sites in the Andes and the Altai mountains, and attributed to entrainment and transport by winds. However, their presence and diversity in snow...
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ftcopernicus:oai:publications.copernicus.org:tc94816 2023-05-15T14:02:18+02:00 Regional variability of diatoms in ice cores from the Antarctic Peninsula and Ellsworth Land, Antarctica Tetzner, Dieter R. Allen, Claire S. Thomas, Elizabeth R. 2022-03-09 application/pdf https://doi.org/10.5194/tc-16-779-2022 https://tc.copernicus.org/articles/16/779/2022/ eng eng doi:10.5194/tc-16-779-2022 https://tc.copernicus.org/articles/16/779/2022/ eISSN: 1994-0424 Text 2022 ftcopernicus https://doi.org/10.5194/tc-16-779-2022 2022-03-14T17:22:16Z The presence of marine microfossils (diatoms) in glacier ice and ice cores has been documented from numerous sites in Antarctica, Greenland, as well as from sites in the Andes and the Altai mountains, and attributed to entrainment and transport by winds. However, their presence and diversity in snow and ice, especially in polar regions, are not well documented and still poorly understood. Here we present the first data to resolve the regional and temporal distribution of diatoms in ice cores, spanning a 20-year period across four sites in the Antarctic Peninsula and Ellsworth Land, Antarctica. We assess the regional variability in diatom composition and abundance at annual and sub-annual resolution across all four sites. These data corroborate the prevalence of contemporary marine diatoms in Antarctic Peninsula ice cores, reveal that the timing and amount of diatoms deposited vary between low- and high-elevation sites, and support existing evidence that marine diatoms have the potential to yield a novel palaeoenvironmental proxy for ice cores in Antarctica. Text Antarc* Antarctic Antarctic Peninsula Antarctica glacier Greenland Copernicus Publications: E-Journals Antarctic Antarctic Peninsula Ellsworth Land ENVELOPE(-85.000,-85.000,-75.000,-75.000) Greenland The Antarctic The Cryosphere 16 3 779 798 |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
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English |
description |
The presence of marine microfossils (diatoms) in glacier ice and ice cores has been documented from numerous sites in Antarctica, Greenland, as well as from sites in the Andes and the Altai mountains, and attributed to entrainment and transport by winds. However, their presence and diversity in snow and ice, especially in polar regions, are not well documented and still poorly understood. Here we present the first data to resolve the regional and temporal distribution of diatoms in ice cores, spanning a 20-year period across four sites in the Antarctic Peninsula and Ellsworth Land, Antarctica. We assess the regional variability in diatom composition and abundance at annual and sub-annual resolution across all four sites. These data corroborate the prevalence of contemporary marine diatoms in Antarctic Peninsula ice cores, reveal that the timing and amount of diatoms deposited vary between low- and high-elevation sites, and support existing evidence that marine diatoms have the potential to yield a novel palaeoenvironmental proxy for ice cores in Antarctica. |
format |
Text |
author |
Tetzner, Dieter R. Allen, Claire S. Thomas, Elizabeth R. |
spellingShingle |
Tetzner, Dieter R. Allen, Claire S. Thomas, Elizabeth R. Regional variability of diatoms in ice cores from the Antarctic Peninsula and Ellsworth Land, Antarctica |
author_facet |
Tetzner, Dieter R. Allen, Claire S. Thomas, Elizabeth R. |
author_sort |
Tetzner, Dieter R. |
title |
Regional variability of diatoms in ice cores from the Antarctic Peninsula and Ellsworth Land, Antarctica |
title_short |
Regional variability of diatoms in ice cores from the Antarctic Peninsula and Ellsworth Land, Antarctica |
title_full |
Regional variability of diatoms in ice cores from the Antarctic Peninsula and Ellsworth Land, Antarctica |
title_fullStr |
Regional variability of diatoms in ice cores from the Antarctic Peninsula and Ellsworth Land, Antarctica |
title_full_unstemmed |
Regional variability of diatoms in ice cores from the Antarctic Peninsula and Ellsworth Land, Antarctica |
title_sort |
regional variability of diatoms in ice cores from the antarctic peninsula and ellsworth land, antarctica |
publishDate |
2022 |
url |
https://doi.org/10.5194/tc-16-779-2022 https://tc.copernicus.org/articles/16/779/2022/ |
long_lat |
ENVELOPE(-85.000,-85.000,-75.000,-75.000) |
geographic |
Antarctic Antarctic Peninsula Ellsworth Land Greenland The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Ellsworth Land Greenland The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica glacier Greenland |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica glacier Greenland |
op_source |
eISSN: 1994-0424 |
op_relation |
doi:10.5194/tc-16-779-2022 https://tc.copernicus.org/articles/16/779/2022/ |
op_doi |
https://doi.org/10.5194/tc-16-779-2022 |
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The Cryosphere |
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16 |
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op_container_end_page |
798 |
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1766272489700196352 |