Antarctic records of precession-paced insolation-driven warming during early Pleistocene Marine Isotope Stage 31
Precisely dated Antarctic continental margin and Southern Ocean geological records show that the early Pleistocene interglacial Marine Isotope Stage 31 (MIS-31) was characterized by warmer than present surface waters with reduced sea-ice and enhanced high latitude marine carbonate production. Microp...
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ftanucanberra:oai:openresearch-repository.anu.edu.au:1885/18971 2024-01-14T10:01:12+01:00 Antarctic records of precession-paced insolation-driven warming during early Pleistocene Marine Isotope Stage 31 Scherer, R Bohaty, S Dunbar, Robert B Esper, O Flores, J Gersonde, R Harnwood, D Roberts, Andrew Taviani, M http://hdl.handle.net/1885/18971 https://doi.org/10.1029/2007GL032254 https://openresearch-repository.anu.edu.au/bitstream/1885/18971/5/Antarctic_Roberts.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/18971/7/01_Scherer_Antarctic_records_of_2008.pdf.jpg unknown American Geophysical Union 0094-8276 http://hdl.handle.net/1885/18971 doi:10.1029/2007GL032254 https://openresearch-repository.anu.edu.au/bitstream/1885/18971/5/Antarctic_Roberts.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/18971/7/01_Scherer_Antarctic_records_of_2008.pdf.jpg Geophysical Research Letters Keywords: Atmospheric temperature Glacial geology Global warming Oceanography Sea ice Thermal stratification Pleistocene marine isotope Sea surface temperature Water mass stratification Geochronology continental margin ice sheet interglacial marine iso Journal article ftanucanberra https://doi.org/10.1029/2007GL032254 2023-12-15T09:33:34Z Precisely dated Antarctic continental margin and Southern Ocean geological records show that the early Pleistocene interglacial Marine Isotope Stage 31 (MIS-31) was characterized by warmer than present surface waters with reduced sea-ice and enhanced high latitude marine carbonate production. Micropaleontologic, isotopic, and paleomagnetic evidence from drill cores at 77°S (Cape Roberts Project-1) and 53°S (ODP Site 1094) indicate circumantarctic changes in sea surface temperature and water mass stratification that are in phase with high southern latitude insolation changes during MIS-31. These changes imply a significant, though as yet unquantifiable reduction in Antarctic ice volume. This study supports the hypothesis that the interhemispheric antiphased relationship of the precession cycle attenuates a potentially significant Antarctic ice volume signal in the deep sea oxygen isotope record. The implications are that Antarctic marine ice sheets may be more susceptible to warming and high insolation driven retreat than has been widely recognized. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Sea ice Southern Ocean Australian National University: ANU Digital Collections Antarctic Southern Ocean Cape Roberts ENVELOPE(-70.467,-70.467,-68.950,-68.950) Geophysical Research Letters 35 3 |
institution |
Open Polar |
collection |
Australian National University: ANU Digital Collections |
op_collection_id |
ftanucanberra |
language |
unknown |
topic |
Keywords: Atmospheric temperature Glacial geology Global warming Oceanography Sea ice Thermal stratification Pleistocene marine isotope Sea surface temperature Water mass stratification Geochronology continental margin ice sheet interglacial marine iso |
spellingShingle |
Keywords: Atmospheric temperature Glacial geology Global warming Oceanography Sea ice Thermal stratification Pleistocene marine isotope Sea surface temperature Water mass stratification Geochronology continental margin ice sheet interglacial marine iso Scherer, R Bohaty, S Dunbar, Robert B Esper, O Flores, J Gersonde, R Harnwood, D Roberts, Andrew Taviani, M Antarctic records of precession-paced insolation-driven warming during early Pleistocene Marine Isotope Stage 31 |
topic_facet |
Keywords: Atmospheric temperature Glacial geology Global warming Oceanography Sea ice Thermal stratification Pleistocene marine isotope Sea surface temperature Water mass stratification Geochronology continental margin ice sheet interglacial marine iso |
description |
Precisely dated Antarctic continental margin and Southern Ocean geological records show that the early Pleistocene interglacial Marine Isotope Stage 31 (MIS-31) was characterized by warmer than present surface waters with reduced sea-ice and enhanced high latitude marine carbonate production. Micropaleontologic, isotopic, and paleomagnetic evidence from drill cores at 77°S (Cape Roberts Project-1) and 53°S (ODP Site 1094) indicate circumantarctic changes in sea surface temperature and water mass stratification that are in phase with high southern latitude insolation changes during MIS-31. These changes imply a significant, though as yet unquantifiable reduction in Antarctic ice volume. This study supports the hypothesis that the interhemispheric antiphased relationship of the precession cycle attenuates a potentially significant Antarctic ice volume signal in the deep sea oxygen isotope record. The implications are that Antarctic marine ice sheets may be more susceptible to warming and high insolation driven retreat than has been widely recognized. |
format |
Article in Journal/Newspaper |
author |
Scherer, R Bohaty, S Dunbar, Robert B Esper, O Flores, J Gersonde, R Harnwood, D Roberts, Andrew Taviani, M |
author_facet |
Scherer, R Bohaty, S Dunbar, Robert B Esper, O Flores, J Gersonde, R Harnwood, D Roberts, Andrew Taviani, M |
author_sort |
Scherer, R |
title |
Antarctic records of precession-paced insolation-driven warming during early Pleistocene Marine Isotope Stage 31 |
title_short |
Antarctic records of precession-paced insolation-driven warming during early Pleistocene Marine Isotope Stage 31 |
title_full |
Antarctic records of precession-paced insolation-driven warming during early Pleistocene Marine Isotope Stage 31 |
title_fullStr |
Antarctic records of precession-paced insolation-driven warming during early Pleistocene Marine Isotope Stage 31 |
title_full_unstemmed |
Antarctic records of precession-paced insolation-driven warming during early Pleistocene Marine Isotope Stage 31 |
title_sort |
antarctic records of precession-paced insolation-driven warming during early pleistocene marine isotope stage 31 |
publisher |
American Geophysical Union |
url |
http://hdl.handle.net/1885/18971 https://doi.org/10.1029/2007GL032254 https://openresearch-repository.anu.edu.au/bitstream/1885/18971/5/Antarctic_Roberts.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/18971/7/01_Scherer_Antarctic_records_of_2008.pdf.jpg |
long_lat |
ENVELOPE(-70.467,-70.467,-68.950,-68.950) |
geographic |
Antarctic Southern Ocean Cape Roberts |
geographic_facet |
Antarctic Southern Ocean Cape Roberts |
genre |
Antarc* Antarctic Ice Sheet Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Ice Sheet Sea ice Southern Ocean |
op_source |
Geophysical Research Letters |
op_relation |
0094-8276 http://hdl.handle.net/1885/18971 doi:10.1029/2007GL032254 https://openresearch-repository.anu.edu.au/bitstream/1885/18971/5/Antarctic_Roberts.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/18971/7/01_Scherer_Antarctic_records_of_2008.pdf.jpg |
op_doi |
https://doi.org/10.1029/2007GL032254 |
container_title |
Geophysical Research Letters |
container_volume |
35 |
container_issue |
3 |
_version_ |
1788067016068825088 |