Deep water inflow slowed offshore expansion of the West Antarctic Ice Sheet at 
the Eocene-Oligocene transition

Uenzelmann-Neben, Gabriele; Gohl, Karsten; Hochmuth, Katharina; Salzmann, Ulrich; Larter, Robert D.; Hillenbrand, Claus-Dieter; Klages, Johann P.; Afanasyeva, V.; Arndt, J. E.; Bickert, T.; Bohaty, S. M.; Dziadek, R.; Ebermann, B.; Ehrmann, W.; Esper, O.; Frederichs, T.; Freudenthal, T.; Gebhardt, C.; Küssner, K.; Kuhn, G.; Najman, Y.; Pälike, H.; Riefstahl, F.; Ronge, T.; Scheinert, M.; Simoes Pereira, P.; Smith, J. A.; Spiegel, C.; Van de Flierdt, T.; Zundel, M.

doi:10.1038/s43247-022-00369-x

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Deep water inflow slowed offshore expansion of the West Antarctic Ice Sheet at the Eocene-Oligocene transition

Uenzelmann-Neben, G., Gohl, K., Hochmuth, K., Salzmann, U., Larter, R. D., Hillenbrand, C.-D., Klages, J. P., Afanasyeva, V., Arndt, J. E., Bickert, T., Bohaty, S. M., Dziadek, R., Ebermann, B., Ehrmann, W., Esper, O., Frederichs, T., Freudenthal, T., Gebhardt, C., Küssner, K., Kuhn, G., Najman, Y., Pälike, H., Riefstahl, F., Ronge, T., Scheinert, M., Simoes Pereira, P., Smith, J. A., Spiegel, C., Van de Flierdt, T., Zundel, M. (2022): Deep water inflow slowed offshore expansion of the West Antarctic Ice Sheet at the Eocene-Oligocene transition. - Communications Earth and Environment, 3, 36.
https://doi.org/10.1038/s43247-022-00369-x

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5025967 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5025967_1

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Uenzelmann-Neben, Gabriele^{1, 2}, Author
Gohl, Karsten^{1, 2}, Author
Hochmuth, Katharina^{1, 2}, Author
Salzmann, Ulrich^{1, 2}, Author
Larter, Robert D.^{1, 2}, Author
Hillenbrand, Claus-Dieter^{1, 2}, Author
Klages, Johann P.^{1, 2}, Author
Afanasyeva, V.^{1, 2}, Author
Arndt, J. E.^{1, 2}, Author
Bickert, T.^{1, 2}, Author
Bohaty, S. M.^{1, 2}, Author
Dziadek, R.^{1, 2}, Author
Ebermann, B.^{1, 2}, Author
Ehrmann, W.^{1, 2}, Author
Esper, O.^{1, 2}, Author
Frederichs, T.^{1, 2}, Author
Freudenthal, T.^{1, 2}, Author
Gebhardt, C.^{1, 2}, Author
Küssner, K.^{1, 2}, Author
Kuhn, G.^{1, 2}, Author
Najman, Y.^{1, 2}, AuthorPälike, H.^{1, 2}, AuthorRiefstahl, F.^{1, 2}, AuthorRonge, T.^{1, 2}, AuthorScheinert, M.^{1, 2}, AuthorSimoes Pereira, P.^{1, 2}, AuthorSmith, J. A.^{1, 2}, AuthorSpiegel, C.^{1, 2}, AuthorVan de Flierdt, T.^{1, 2}, AuthorZundel, M.^{1, 2}, Author more..

Affiliations:
1External Organizations, ou_persistent22
2Publikationen aller GIPP-unterstützten Projekte, Deutsches GeoForschungsZentrum, Potsdam, ou_44021

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Abstract: The stability of the West Antarctic Ice Sheet is threatened by the incursion of warm Circumpolar Deepwater which flows southwards via cross-shelf troughs towards the coast there melting ice shelves. However, the onset of this oceanic forcing on the development and evolution of the West Antarctic Ice Sheet remains poorly understood. Here, we use single- and multichannel seismic reflection profiles to investigate the architecture of a sediment body on the shelf of the Amundsen Sea Embayment. We estimate the formation age of this sediment body to be around the Eocene-Oligocene Transition and find that it possesses the geometry and depositional pattern of a plastered sediment drift. We suggest this indicates a southward inflow of deep water which probably supplied heat and, thus, prevented West Antarctic Ice Sheet advance beyond the coast at this time. We conclude that the West Antarctic Ice Sheet has likely experienced a strong oceanic influence on its dynamics since its initial formation.

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Dates: Published Online: 2022-02-21Finally published : 2022

Publication Status: Finally published

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Identifiers: DOI: 10.1038/s43247-022-00369-x

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Title: Communications Earth and Environment

Source Genre: Journal, SCI, Scopus, oa

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Pages: - Volume / Issue: 3 Sequence Number: 36 Start / End Page: - Identifier: ISSN: 2662-4435
CoNE: https://gfzpublic.gfz-potsdam.de/cone/journals/resource/202009111
Publisher: Springer Nature