Deglacial seasonal and sub‐seasonal diatom record from Palmer Deep, Antarctica
Abstract The Antarctic Peninsula is one of the most sensitive regions of Antarctica to climate change. Here, ecological and cryospheric systems respond rapidly to climate fluctuations. A 4.4 m thick laminated diatom ooze deposited during the last deglaciation is examined from a marine sediment core...
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crwiley:10.1002/jqs.947 2024-06-02T07:58:24+00:00 Deglacial seasonal and sub‐seasonal diatom record from Palmer Deep, Antarctica Maddison, Eleanor J. Pike, Jennifer Leventer, Amy Domack, Eugene W. 2005 http://dx.doi.org/10.1002/jqs.947 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.947 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.947 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Quaternary Science volume 20, issue 5, page 435-446 ISSN 0267-8179 1099-1417 journal-article 2005 crwiley https://doi.org/10.1002/jqs.947 2024-05-03T11:37:36Z Abstract The Antarctic Peninsula is one of the most sensitive regions of Antarctica to climate change. Here, ecological and cryospheric systems respond rapidly to climate fluctuations. A 4.4 m thick laminated diatom ooze deposited during the last deglaciation is examined from a marine sediment core (ODP Site 1098) recovered from Basin I, Palmer Deep, western Antarctic Peninsula. This deglacial laminated interval was deposited directly over a glaciomarine diamict, hence during a globally recognised period of rapid climate change. The ultra‐high‐resolution deglacial record is analysed using SEM backscattered electron imagery and secondary electron imagery. Laminated to thinly bedded orange‐brown diatom ooze (near monogeneric Hyalochaete Chaetoceros spp. resting spores) alternates with blue‐grey terrigenous sediments (open water diatom species). These discrete laminae are interpreted as austral spring and summer signals respectively, with negligible winter deposition. Sub‐seasonal sub‐laminae are observed repeatedly through the summer laminae, suggesting variations in shelf waters throughout the summer. Tidal cycles, high storm intensities and/or intrusion of Circumpolar Deep Water onto the continental shelf introduced conditions which enhanced specific species productivity through the season. Copyright © 2005 John Wiley & Sons, Ltd. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Wiley Online Library Antarctic Antarctic Peninsula Austral Palmer Deep ENVELOPE(-64.400,-64.400,-64.950,-64.950) The Antarctic Journal of Quaternary Science 20 5 435 446 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract The Antarctic Peninsula is one of the most sensitive regions of Antarctica to climate change. Here, ecological and cryospheric systems respond rapidly to climate fluctuations. A 4.4 m thick laminated diatom ooze deposited during the last deglaciation is examined from a marine sediment core (ODP Site 1098) recovered from Basin I, Palmer Deep, western Antarctic Peninsula. This deglacial laminated interval was deposited directly over a glaciomarine diamict, hence during a globally recognised period of rapid climate change. The ultra‐high‐resolution deglacial record is analysed using SEM backscattered electron imagery and secondary electron imagery. Laminated to thinly bedded orange‐brown diatom ooze (near monogeneric Hyalochaete Chaetoceros spp. resting spores) alternates with blue‐grey terrigenous sediments (open water diatom species). These discrete laminae are interpreted as austral spring and summer signals respectively, with negligible winter deposition. Sub‐seasonal sub‐laminae are observed repeatedly through the summer laminae, suggesting variations in shelf waters throughout the summer. Tidal cycles, high storm intensities and/or intrusion of Circumpolar Deep Water onto the continental shelf introduced conditions which enhanced specific species productivity through the season. Copyright © 2005 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Maddison, Eleanor J. Pike, Jennifer Leventer, Amy Domack, Eugene W. |
spellingShingle |
Maddison, Eleanor J. Pike, Jennifer Leventer, Amy Domack, Eugene W. Deglacial seasonal and sub‐seasonal diatom record from Palmer Deep, Antarctica |
author_facet |
Maddison, Eleanor J. Pike, Jennifer Leventer, Amy Domack, Eugene W. |
author_sort |
Maddison, Eleanor J. |
title |
Deglacial seasonal and sub‐seasonal diatom record from Palmer Deep, Antarctica |
title_short |
Deglacial seasonal and sub‐seasonal diatom record from Palmer Deep, Antarctica |
title_full |
Deglacial seasonal and sub‐seasonal diatom record from Palmer Deep, Antarctica |
title_fullStr |
Deglacial seasonal and sub‐seasonal diatom record from Palmer Deep, Antarctica |
title_full_unstemmed |
Deglacial seasonal and sub‐seasonal diatom record from Palmer Deep, Antarctica |
title_sort |
deglacial seasonal and sub‐seasonal diatom record from palmer deep, antarctica |
publisher |
Wiley |
publishDate |
2005 |
url |
http://dx.doi.org/10.1002/jqs.947 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.947 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.947 |
long_lat |
ENVELOPE(-64.400,-64.400,-64.950,-64.950) |
geographic |
Antarctic Antarctic Peninsula Austral Palmer Deep The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Austral Palmer Deep The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica |
op_source |
Journal of Quaternary Science volume 20, issue 5, page 435-446 ISSN 0267-8179 1099-1417 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/jqs.947 |
container_title |
Journal of Quaternary Science |
container_volume |
20 |
container_issue |
5 |
container_start_page |
435 |
op_container_end_page |
446 |
_version_ |
1800741727127994368 |