International ocean discovery program expedition 374 preliminary report: Ross sea west antarctic ice sheet history: ocean-ice sheet interactions and west antarctic ice sheet vulnerability: Clues from the neogene and quaternary record of the outer ross sea continental margin
The marine-based West Antarctic Ice Sheet (WAIS) is currently retreating due to shifting wind-driven oceanic currents that transport warm waters toward the ice margin, resulting in ice shelf thinning and accelerated mass loss of the WAIS. Previous results from geologic drilling on Antarctica's...
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International Ocean Discovery Program
2018
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Online Access: | https://eprints.soton.ac.uk/423832/ https://eprints.soton.ac.uk/423832/1/374PR.PDF |
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University of Southampton: e-Prints Soton |
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language |
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The marine-based West Antarctic Ice Sheet (WAIS) is currently retreating due to shifting wind-driven oceanic currents that transport warm waters toward the ice margin, resulting in ice shelf thinning and accelerated mass loss of the WAIS. Previous results from geologic drilling on Antarctica's continental margins show significant variability in marine-based ice sheet extent during the late Neogene and Quaternary. Numerical models indicate a fundamental role for oceanic heat in controlling this variability over at least the past 20 My. Although evidence for past ice sheet variability has been collected in marginal settings, sedimentologic sequences from the outer continental shelf are required to evaluate the extent of past ice sheet variability and the associated oceanic forcings and feedbacks. International Ocean Discovery Program Expedition 374 drilled a latitudinal and depth transect of five drill sites from the outer continental shelf to rise in the eastern Ross Sea to resolve the relationship between climatic and oceanic change and WAIS evolution through the Neogene and Quaternary. This location was selected because numerical ice sheet models indicate that this sector of Antarctica is highly sensitive to changes in ocean heat flux. The expedition was designed for optimal data-model integration and will enable an improved understanding of the sensitivity of Antarctic Ice Sheet (AIS) mass balance during warmer-than-present climates (e.g., the Pleistocene "super interglacials," the mid-Pliocene, and the late early to middle Miocene). The principal goals of Expedition 374 were to • Evaluate the contribution of West Antarctica to far-field ice volume and sea level estimates; • Reconstruct ice-proximal atmospheric and oceanic temperatures to identify past polar amplification and assess its forcings and feedbacks; • Assess the role of oceanic forcing (e.g., sea level and temperature) on AIS stability/instability; • Identify the sensitivity of the AIS to Earth's orbital configuration under a variety of climate ... |
format |
Book |
author |
McKay, Robert M. De Santis, Laura Kulhanek, Denise K. Ash, Jeanine A. Beny, François Browne, Imogen B. Cortese, Giuseppe De Sousa, Isabela M.Cordeiro Dodd, Justin D. Esper, Oliver E. Gales, Jenny G. Harwood, David H. Ishino, Saki Keisling, Benjamin K. Kim, Sookwan Kim, Sunghan Laberg, Jan Sverre Leckie, R. Mark Müller, Juliane Patterson, Molly P. Romans, Brian R. Romero, Oscar R. Sangiorgi, Francesca Seki, Osamu Powell, John P. Shevenell, Amelia Singh, Shiv S. Sugisaki, Saiko Van De Flierdt, Tina Van Peer, Tim E. Xiao, Wenshen Xiong, Zhifang |
spellingShingle |
McKay, Robert M. De Santis, Laura Kulhanek, Denise K. Ash, Jeanine A. Beny, François Browne, Imogen B. Cortese, Giuseppe De Sousa, Isabela M.Cordeiro Dodd, Justin D. Esper, Oliver E. Gales, Jenny G. Harwood, David H. Ishino, Saki Keisling, Benjamin K. Kim, Sookwan Kim, Sunghan Laberg, Jan Sverre Leckie, R. Mark Müller, Juliane Patterson, Molly P. Romans, Brian R. Romero, Oscar R. Sangiorgi, Francesca Seki, Osamu Powell, John P. Shevenell, Amelia Singh, Shiv S. Sugisaki, Saiko Van De Flierdt, Tina Van Peer, Tim E. Xiao, Wenshen Xiong, Zhifang International ocean discovery program expedition 374 preliminary report: Ross sea west antarctic ice sheet history: ocean-ice sheet interactions and west antarctic ice sheet vulnerability: Clues from the neogene and quaternary record of the outer ross sea continental margin |
author_facet |
McKay, Robert M. De Santis, Laura Kulhanek, Denise K. Ash, Jeanine A. Beny, François Browne, Imogen B. Cortese, Giuseppe De Sousa, Isabela M.Cordeiro Dodd, Justin D. Esper, Oliver E. Gales, Jenny G. Harwood, David H. Ishino, Saki Keisling, Benjamin K. Kim, Sookwan Kim, Sunghan Laberg, Jan Sverre Leckie, R. Mark Müller, Juliane Patterson, Molly P. Romans, Brian R. Romero, Oscar R. Sangiorgi, Francesca Seki, Osamu Powell, John P. Shevenell, Amelia Singh, Shiv S. Sugisaki, Saiko Van De Flierdt, Tina Van Peer, Tim E. Xiao, Wenshen Xiong, Zhifang |
author_sort |
McKay, Robert M. |
title |
International ocean discovery program expedition 374 preliminary report: Ross sea west antarctic ice sheet history: ocean-ice sheet interactions and west antarctic ice sheet vulnerability: Clues from the neogene and quaternary record of the outer ross sea continental margin |
title_short |
International ocean discovery program expedition 374 preliminary report: Ross sea west antarctic ice sheet history: ocean-ice sheet interactions and west antarctic ice sheet vulnerability: Clues from the neogene and quaternary record of the outer ross sea continental margin |
title_full |
International ocean discovery program expedition 374 preliminary report: Ross sea west antarctic ice sheet history: ocean-ice sheet interactions and west antarctic ice sheet vulnerability: Clues from the neogene and quaternary record of the outer ross sea continental margin |
title_fullStr |
International ocean discovery program expedition 374 preliminary report: Ross sea west antarctic ice sheet history: ocean-ice sheet interactions and west antarctic ice sheet vulnerability: Clues from the neogene and quaternary record of the outer ross sea continental margin |
title_full_unstemmed |
International ocean discovery program expedition 374 preliminary report: Ross sea west antarctic ice sheet history: ocean-ice sheet interactions and west antarctic ice sheet vulnerability: Clues from the neogene and quaternary record of the outer ross sea continental margin |
title_sort |
international ocean discovery program expedition 374 preliminary report: ross sea west antarctic ice sheet history: ocean-ice sheet interactions and west antarctic ice sheet vulnerability: clues from the neogene and quaternary record of the outer ross sea continental margin |
publisher |
International Ocean Discovery Program |
publishDate |
2018 |
url |
https://eprints.soton.ac.uk/423832/ https://eprints.soton.ac.uk/423832/1/374PR.PDF |
geographic |
Antarctic Ross Sea West Antarctic Ice Sheet West Antarctica |
geographic_facet |
Antarctic Ross Sea West Antarctic Ice Sheet West Antarctica |
genre |
Antarc* Antarctic Antarctica Ice Sheet Ice Shelf Ross Sea West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Ice Shelf Ross Sea West Antarctica |
op_relation |
https://eprints.soton.ac.uk/423832/1/374PR.PDF McKay, Robert M., De Santis, Laura, Kulhanek, Denise K., Ash, Jeanine A., Beny, François, Browne, Imogen B., Cortese, Giuseppe, De Sousa, Isabela M.Cordeiro, Dodd, Justin D., Esper, Oliver E., Gales, Jenny G., Harwood, David H., Ishino, Saki, Keisling, Benjamin K., Kim, Sookwan, Kim, Sunghan, Laberg, Jan Sverre, Leckie, R. Mark, Müller, Juliane, Patterson, Molly P., Romans, Brian R., Romero, Oscar R., Sangiorgi, Francesca, Seki, Osamu, Powell, John P., Shevenell, Amelia, Singh, Shiv S., Sugisaki, Saiko, Van De Flierdt, Tina, Van Peer, Tim E., Xiao, Wenshen and Xiong, Zhifang (2018) International ocean discovery program expedition 374 preliminary report: Ross sea west antarctic ice sheet history: ocean-ice sheet interactions and west antarctic ice sheet vulnerability: Clues from the neogene and quaternary record of the outer ross sea continental margin (Integrated Ocean Drilling Program: Preliminary Reports) La Jolla. International Ocean Discovery Program 63pp. (doi:10.14379/iodp.pr.374.2018 <http://dx.doi.org/10.14379/iodp.pr.374.2018>). |
op_rights |
cc_by_4 |
op_doi |
https://doi.org/10.14379/iodp.pr.374.2018 |
_version_ |
1798836818838290432 |
spelling |
ftsouthampton:oai:eprints.soton.ac.uk:423832 2024-05-12T07:56:38+00:00 International ocean discovery program expedition 374 preliminary report: Ross sea west antarctic ice sheet history: ocean-ice sheet interactions and west antarctic ice sheet vulnerability: Clues from the neogene and quaternary record of the outer ross sea continental margin McKay, Robert M. De Santis, Laura Kulhanek, Denise K. Ash, Jeanine A. Beny, François Browne, Imogen B. Cortese, Giuseppe De Sousa, Isabela M.Cordeiro Dodd, Justin D. Esper, Oliver E. Gales, Jenny G. Harwood, David H. Ishino, Saki Keisling, Benjamin K. Kim, Sookwan Kim, Sunghan Laberg, Jan Sverre Leckie, R. Mark Müller, Juliane Patterson, Molly P. Romans, Brian R. Romero, Oscar R. Sangiorgi, Francesca Seki, Osamu Powell, John P. Shevenell, Amelia Singh, Shiv S. Sugisaki, Saiko Van De Flierdt, Tina Van Peer, Tim E. Xiao, Wenshen Xiong, Zhifang 2018-05 application/octet-stream https://eprints.soton.ac.uk/423832/ https://eprints.soton.ac.uk/423832/1/374PR.PDF en English eng International Ocean Discovery Program https://eprints.soton.ac.uk/423832/1/374PR.PDF McKay, Robert M., De Santis, Laura, Kulhanek, Denise K., Ash, Jeanine A., Beny, François, Browne, Imogen B., Cortese, Giuseppe, De Sousa, Isabela M.Cordeiro, Dodd, Justin D., Esper, Oliver E., Gales, Jenny G., Harwood, David H., Ishino, Saki, Keisling, Benjamin K., Kim, Sookwan, Kim, Sunghan, Laberg, Jan Sverre, Leckie, R. Mark, Müller, Juliane, Patterson, Molly P., Romans, Brian R., Romero, Oscar R., Sangiorgi, Francesca, Seki, Osamu, Powell, John P., Shevenell, Amelia, Singh, Shiv S., Sugisaki, Saiko, Van De Flierdt, Tina, Van Peer, Tim E., Xiao, Wenshen and Xiong, Zhifang (2018) International ocean discovery program expedition 374 preliminary report: Ross sea west antarctic ice sheet history: ocean-ice sheet interactions and west antarctic ice sheet vulnerability: Clues from the neogene and quaternary record of the outer ross sea continental margin (Integrated Ocean Drilling Program: Preliminary Reports) La Jolla. International Ocean Discovery Program 63pp. (doi:10.14379/iodp.pr.374.2018 <http://dx.doi.org/10.14379/iodp.pr.374.2018>). cc_by_4 Monograph PeerReviewed 2018 ftsouthampton https://doi.org/10.14379/iodp.pr.374.2018 2024-04-17T14:05:16Z The marine-based West Antarctic Ice Sheet (WAIS) is currently retreating due to shifting wind-driven oceanic currents that transport warm waters toward the ice margin, resulting in ice shelf thinning and accelerated mass loss of the WAIS. Previous results from geologic drilling on Antarctica's continental margins show significant variability in marine-based ice sheet extent during the late Neogene and Quaternary. Numerical models indicate a fundamental role for oceanic heat in controlling this variability over at least the past 20 My. Although evidence for past ice sheet variability has been collected in marginal settings, sedimentologic sequences from the outer continental shelf are required to evaluate the extent of past ice sheet variability and the associated oceanic forcings and feedbacks. International Ocean Discovery Program Expedition 374 drilled a latitudinal and depth transect of five drill sites from the outer continental shelf to rise in the eastern Ross Sea to resolve the relationship between climatic and oceanic change and WAIS evolution through the Neogene and Quaternary. This location was selected because numerical ice sheet models indicate that this sector of Antarctica is highly sensitive to changes in ocean heat flux. The expedition was designed for optimal data-model integration and will enable an improved understanding of the sensitivity of Antarctic Ice Sheet (AIS) mass balance during warmer-than-present climates (e.g., the Pleistocene "super interglacials," the mid-Pliocene, and the late early to middle Miocene). The principal goals of Expedition 374 were to • Evaluate the contribution of West Antarctica to far-field ice volume and sea level estimates; • Reconstruct ice-proximal atmospheric and oceanic temperatures to identify past polar amplification and assess its forcings and feedbacks; • Assess the role of oceanic forcing (e.g., sea level and temperature) on AIS stability/instability; • Identify the sensitivity of the AIS to Earth's orbital configuration under a variety of climate ... Book Antarc* Antarctic Antarctica Ice Sheet Ice Shelf Ross Sea West Antarctica University of Southampton: e-Prints Soton Antarctic Ross Sea West Antarctic Ice Sheet West Antarctica |