Change in climate, ocean and ice-sheet conditions in the Ross Embayment, Antarctica at 6 ka
Evidence from the Ross embayment, Antarctica, suggests an abrupt cooling and a concomitant increase in sea-ice cover at about 6000 BP (6 ka). Stable-isotope (tSD) concentrations in the Taylor Dome ice core, at the western edge of the Ross embayment, decline rapidly after 6 ka, and continue to decli...
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1998
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ftcdlib:qt4d57n1mc 2023-05-15T14:03:06+02:00 Change in climate, ocean and ice-sheet conditions in the Ross Embayment, Antarctica at 6 ka Steig, E. J. Hart, C. P. White, J. W. C. Cunningham, W. L. Davis, M. D. Saltzman, E. S. 1998-01-01 application/pdf http://www.escholarship.org/uc/item/4d57n1mc english eng eScholarship, University of California qt4d57n1mc http://www.escholarship.org/uc/item/4d57n1mc Attribution (CC BY): http://creativecommons.org/licenses/by/3.0/ CC-BY Steig, E. J.; Hart, C. P.; White, J. W. C.; Cunningham, W. L.; Davis, M. D.; & Saltzman, E. S.(1998). Change in climate, ocean and ice-sheet conditions in the Ross Embayment, Antarctica at 6 ka. Ann. Glaciol., 27. UC Irvine: Department of Earth System Science, UCI. Retrieved from: http://www.escholarship.org/uc/item/4d57n1mc Physical Sciences and Mathematics climate change cooling Holocene ice sheet raised beach article 1998 ftcdlib 2016-04-02T18:23:25Z Evidence from the Ross embayment, Antarctica, suggests an abrupt cooling and a concomitant increase in sea-ice cover at about 6000 BP (6 ka). Stable-isotope (tSD) concentrations in the Taylor Dome ice core, at the western edge of the Ross embayment, decline rapidly after 6 ka, and continue to decline through the late Holocene. Methanesulfonic acid concentrations at Taylor Dome show opposite trends to tSD. Sediment cores from the western Ross Sea show a percentage minimum for the sea-ice diatom Fragilariopsis curta between 9 and 6 ka, when Taylor Dome <5D values are highest, followed by an increase through the late Holocene. Radiocarbon dates from raised beach deposits indicate that the retreat of ice shelves in the Ross embayment ceased at about 6 ka, coincident with the environmental changes inferred from the sediment and ice-core records. T he similarity in timing suggests an important role for climate in controlling the evolution of ice-shelf margins following the end of the last glaciation. Article in Journal/Newspaper Antarc* Antarctica ice core Ice Sheet Ice Shelf Ice Shelves Ross Sea Sea ice University of California: eScholarship Raised Beach ENVELOPE(163.783,163.783,-74.983,-74.983) Ross Sea Taylor Dome ENVELOPE(157.667,157.667,-77.667,-77.667) |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
English |
topic |
Physical Sciences and Mathematics climate change cooling Holocene ice sheet raised beach |
spellingShingle |
Physical Sciences and Mathematics climate change cooling Holocene ice sheet raised beach Steig, E. J. Hart, C. P. White, J. W. C. Cunningham, W. L. Davis, M. D. Saltzman, E. S. Change in climate, ocean and ice-sheet conditions in the Ross Embayment, Antarctica at 6 ka |
topic_facet |
Physical Sciences and Mathematics climate change cooling Holocene ice sheet raised beach |
description |
Evidence from the Ross embayment, Antarctica, suggests an abrupt cooling and a concomitant increase in sea-ice cover at about 6000 BP (6 ka). Stable-isotope (tSD) concentrations in the Taylor Dome ice core, at the western edge of the Ross embayment, decline rapidly after 6 ka, and continue to decline through the late Holocene. Methanesulfonic acid concentrations at Taylor Dome show opposite trends to tSD. Sediment cores from the western Ross Sea show a percentage minimum for the sea-ice diatom Fragilariopsis curta between 9 and 6 ka, when Taylor Dome <5D values are highest, followed by an increase through the late Holocene. Radiocarbon dates from raised beach deposits indicate that the retreat of ice shelves in the Ross embayment ceased at about 6 ka, coincident with the environmental changes inferred from the sediment and ice-core records. T he similarity in timing suggests an important role for climate in controlling the evolution of ice-shelf margins following the end of the last glaciation. |
format |
Article in Journal/Newspaper |
author |
Steig, E. J. Hart, C. P. White, J. W. C. Cunningham, W. L. Davis, M. D. Saltzman, E. S. |
author_facet |
Steig, E. J. Hart, C. P. White, J. W. C. Cunningham, W. L. Davis, M. D. Saltzman, E. S. |
author_sort |
Steig, E. J. |
title |
Change in climate, ocean and ice-sheet conditions in the Ross Embayment, Antarctica at 6 ka |
title_short |
Change in climate, ocean and ice-sheet conditions in the Ross Embayment, Antarctica at 6 ka |
title_full |
Change in climate, ocean and ice-sheet conditions in the Ross Embayment, Antarctica at 6 ka |
title_fullStr |
Change in climate, ocean and ice-sheet conditions in the Ross Embayment, Antarctica at 6 ka |
title_full_unstemmed |
Change in climate, ocean and ice-sheet conditions in the Ross Embayment, Antarctica at 6 ka |
title_sort |
change in climate, ocean and ice-sheet conditions in the ross embayment, antarctica at 6 ka |
publisher |
eScholarship, University of California |
publishDate |
1998 |
url |
http://www.escholarship.org/uc/item/4d57n1mc |
long_lat |
ENVELOPE(163.783,163.783,-74.983,-74.983) ENVELOPE(157.667,157.667,-77.667,-77.667) |
geographic |
Raised Beach Ross Sea Taylor Dome |
geographic_facet |
Raised Beach Ross Sea Taylor Dome |
genre |
Antarc* Antarctica ice core Ice Sheet Ice Shelf Ice Shelves Ross Sea Sea ice |
genre_facet |
Antarc* Antarctica ice core Ice Sheet Ice Shelf Ice Shelves Ross Sea Sea ice |
op_source |
Steig, E. J.; Hart, C. P.; White, J. W. C.; Cunningham, W. L.; Davis, M. D.; & Saltzman, E. S.(1998). Change in climate, ocean and ice-sheet conditions in the Ross Embayment, Antarctica at 6 ka. Ann. Glaciol., 27. UC Irvine: Department of Earth System Science, UCI. Retrieved from: http://www.escholarship.org/uc/item/4d57n1mc |
op_relation |
qt4d57n1mc http://www.escholarship.org/uc/item/4d57n1mc |
op_rights |
Attribution (CC BY): http://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
_version_ |
1766273634939174912 |