Late Quaternary deglaciation and climate history of the Larsemann Hills (East Antarctica)
Abstract The Late Quaternary climate history of the Larsemann Hills has been reconstructed using siliceous microfossils (diatoms, chrysophytes and silicoflagellates) in sediment cores extracted from three isolation lakes. Results show that the western peninsula, Stornes, and offshore islands were ic...
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crwiley:10.1002/jqs.823 2024-09-30T14:24:57+00:00 Late Quaternary deglaciation and climate history of the Larsemann Hills (East Antarctica) Verleyen, Elie Hodgson, Dominic A. Sabbe, Koen Vyverman, Wim 2004 http://dx.doi.org/10.1002/jqs.823 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.823 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.823 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Quaternary Science volume 19, issue 4, page 361-375 ISSN 0267-8179 1099-1417 journal-article 2004 crwiley https://doi.org/10.1002/jqs.823 2024-09-05T05:09:00Z Abstract The Late Quaternary climate history of the Larsemann Hills has been reconstructed using siliceous microfossils (diatoms, chrysophytes and silicoflagellates) in sediment cores extracted from three isolation lakes. Results show that the western peninsula, Stornes, and offshore islands were ice‐covered between 30 000 yr BP and 13 500 cal. yr BP. From 13 500 cal. yr BP (shortly after the Antarctic Cold Reversal) the coastal lakes of the Larsemann Hills were deglaciated and biogenic sedimentation commenced. Between 13 500 and 11 500 cal. yr BP conditions were warmer and wetter than during the preceding glacial period, but still colder than today. From 11 500 to 9500 cal. yr BP there is evidence for wet and warm conditions, which probably is related to the early Holocene climate optimum, recorded in Antarctic ice cores. Between 9500 and 7400 cal. yr BP dry and cold conditions are inferred from high lake‐water salinities, and low water levels and an extended duration of nearshore sea‐ice. A second climate optimum occurred between 7400 and 5230 cal. yr BP when stratified, open water conditions during spring and summer characterised the marine coast of Prydz Bay. From 5230 until 2750 cal. yr BP sea‐ice duration in Prydz Bay increased, with conditions similar to the present day. A short return to stratified, open water conditions and a reduction in nearshore winter sea‐ice extent is evident between 2750 and 2200 cal. yr BP. Simultaneously, reconstructions of lake water depth and salinity suggests relatively humid and warm conditions on land between 3000 and 2000 cal. yr BP, which corresponds to a Holocene Hypsithermal reported elsewhere in Antarctica. Finally, dry conditions are recorded around 2000, between 760 and 690, and between 280 and 140 cal. yr BP. These data are consistent with ice‐core records from Antarctica and support the hypothesis that lacustrine and marine sediments on land can be used to evaluate the effect of long‐term climate change on the terrestrial environment. Copyright © 2004 John Wiley ... Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica ice core Prydz Bay Sea ice Wiley Online Library Antarctic The Antarctic East Antarctica Prydz Bay Larsemann Hills ENVELOPE(76.217,76.217,-69.400,-69.400) Stornes ENVELOPE(76.099,76.099,-69.429,-69.429) High Lake ENVELOPE(142.675,142.675,-66.995,-66.995) Journal of Quaternary Science 19 4 361 375 |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract The Late Quaternary climate history of the Larsemann Hills has been reconstructed using siliceous microfossils (diatoms, chrysophytes and silicoflagellates) in sediment cores extracted from three isolation lakes. Results show that the western peninsula, Stornes, and offshore islands were ice‐covered between 30 000 yr BP and 13 500 cal. yr BP. From 13 500 cal. yr BP (shortly after the Antarctic Cold Reversal) the coastal lakes of the Larsemann Hills were deglaciated and biogenic sedimentation commenced. Between 13 500 and 11 500 cal. yr BP conditions were warmer and wetter than during the preceding glacial period, but still colder than today. From 11 500 to 9500 cal. yr BP there is evidence for wet and warm conditions, which probably is related to the early Holocene climate optimum, recorded in Antarctic ice cores. Between 9500 and 7400 cal. yr BP dry and cold conditions are inferred from high lake‐water salinities, and low water levels and an extended duration of nearshore sea‐ice. A second climate optimum occurred between 7400 and 5230 cal. yr BP when stratified, open water conditions during spring and summer characterised the marine coast of Prydz Bay. From 5230 until 2750 cal. yr BP sea‐ice duration in Prydz Bay increased, with conditions similar to the present day. A short return to stratified, open water conditions and a reduction in nearshore winter sea‐ice extent is evident between 2750 and 2200 cal. yr BP. Simultaneously, reconstructions of lake water depth and salinity suggests relatively humid and warm conditions on land between 3000 and 2000 cal. yr BP, which corresponds to a Holocene Hypsithermal reported elsewhere in Antarctica. Finally, dry conditions are recorded around 2000, between 760 and 690, and between 280 and 140 cal. yr BP. These data are consistent with ice‐core records from Antarctica and support the hypothesis that lacustrine and marine sediments on land can be used to evaluate the effect of long‐term climate change on the terrestrial environment. Copyright © 2004 John Wiley ... |
format |
Article in Journal/Newspaper |
author |
Verleyen, Elie Hodgson, Dominic A. Sabbe, Koen Vyverman, Wim |
spellingShingle |
Verleyen, Elie Hodgson, Dominic A. Sabbe, Koen Vyverman, Wim Late Quaternary deglaciation and climate history of the Larsemann Hills (East Antarctica) |
author_facet |
Verleyen, Elie Hodgson, Dominic A. Sabbe, Koen Vyverman, Wim |
author_sort |
Verleyen, Elie |
title |
Late Quaternary deglaciation and climate history of the Larsemann Hills (East Antarctica) |
title_short |
Late Quaternary deglaciation and climate history of the Larsemann Hills (East Antarctica) |
title_full |
Late Quaternary deglaciation and climate history of the Larsemann Hills (East Antarctica) |
title_fullStr |
Late Quaternary deglaciation and climate history of the Larsemann Hills (East Antarctica) |
title_full_unstemmed |
Late Quaternary deglaciation and climate history of the Larsemann Hills (East Antarctica) |
title_sort |
late quaternary deglaciation and climate history of the larsemann hills (east antarctica) |
publisher |
Wiley |
publishDate |
2004 |
url |
http://dx.doi.org/10.1002/jqs.823 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.823 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.823 |
long_lat |
ENVELOPE(76.217,76.217,-69.400,-69.400) ENVELOPE(76.099,76.099,-69.429,-69.429) ENVELOPE(142.675,142.675,-66.995,-66.995) |
geographic |
Antarctic The Antarctic East Antarctica Prydz Bay Larsemann Hills Stornes High Lake |
geographic_facet |
Antarctic The Antarctic East Antarctica Prydz Bay Larsemann Hills Stornes High Lake |
genre |
Antarc* Antarctic Antarctica East Antarctica ice core Prydz Bay Sea ice |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica ice core Prydz Bay Sea ice |
op_source |
Journal of Quaternary Science volume 19, issue 4, page 361-375 ISSN 0267-8179 1099-1417 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/jqs.823 |
container_title |
Journal of Quaternary Science |
container_volume |
19 |
container_issue |
4 |
container_start_page |
361 |
op_container_end_page |
375 |
_version_ |
1811642912447922176 |