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A dynamic early East Antarctic Ice Sheet suggested by ice-covered fjord landscapes

Author

Listed:
  • Duncan A. Young

    (Institute for Geophysics, Jackson School of Geosciences, University of Texas at Austin)

  • Andrew P. Wright

    (School of GeoSciences, University of Edinburgh, King’s Buildings, Edinburgh EH9 3JW, UK)

  • Jason L. Roberts

    (Kingston, Tasmania 7050, Australia
    Antarctic Climate & Ecosystems Cooperative Research Centre, Hobart, Tasmania 7001, Australia)

  • Roland C. Warner

    (Kingston, Tasmania 7050, Australia
    Antarctic Climate & Ecosystems Cooperative Research Centre, Hobart, Tasmania 7001, Australia)

  • Neal W. Young

    (Kingston, Tasmania 7050, Australia
    Antarctic Climate & Ecosystems Cooperative Research Centre, Hobart, Tasmania 7001, Australia)

  • Jamin S. Greenbaum

    (Institute for Geophysics, Jackson School of Geosciences, University of Texas at Austin)

  • Dustin M. Schroeder

    (Institute for Geophysics, Jackson School of Geosciences, University of Texas at Austin)

  • John W. Holt

    (Institute for Geophysics, Jackson School of Geosciences, University of Texas at Austin)

  • David E. Sugden

    (School of GeoSciences, University of Edinburgh, King’s Buildings, Edinburgh EH9 3JW, UK)

  • Donald D. Blankenship

    (Institute for Geophysics, Jackson School of Geosciences, University of Texas at Austin)

  • Tas D. van Ommen

    (Kingston, Tasmania 7050, Australia
    Antarctic Climate & Ecosystems Cooperative Research Centre, Hobart, Tasmania 7001, Australia)

  • Martin J. Siegert

    (School of GeoSciences, University of Edinburgh, King’s Buildings, Edinburgh EH9 3JW, UK)

Abstract

The fjords beneath The East Antarctic ice sheet has played a fundamental part in modulating climate and sea level during the past 30 million years. Understanding its history is crucial to evaluating its future behaviour and response to global warming. Airborne ice-penetrating radar studies now reveal a fjord-like landscape beneath several kilometres of ice in the East Antarctic Aurora subglacial basin. The data confirm, and provide a new constraint on, the magnitude and dynamics of the oscillations of the East Antarctic ice sheet during the late Cenozoic, which had previously been supported only by marine cores.

Suggested Citation

  • Duncan A. Young & Andrew P. Wright & Jason L. Roberts & Roland C. Warner & Neal W. Young & Jamin S. Greenbaum & Dustin M. Schroeder & John W. Holt & David E. Sugden & Donald D. Blankenship & Tas D. va, 2011. "A dynamic early East Antarctic Ice Sheet suggested by ice-covered fjord landscapes," Nature, Nature, vol. 474(7349), pages 72-75, June.
    • Handle: RePEc:nat:nature:v:474:y:2011:i:7349:d:10.1038_nature10114
    DOI: 10.1038/nature10114
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    Cited by:

    1. Daisuke Hirano & Takeshi Tamura & Kazuya Kusahara & Masakazu Fujii & Kaihe Yamazaki & Yoshihiro Nakayama & Kazuya Ono & Takuya Itaki & Yuichi Aoyama & Daisuke Simizu & Kohei Mizobata & Kay I. Ohshima , 2023. "On-shelf circulation of warm water toward the Totten Ice Shelf in East Antarctica," Nature Communications, Nature, vol. 14(1), pages 1-15, December.
    2. Federica Donda & Michele Rebesco & Vedrana Kovacevic & Alessandro Silvano & Manuel Bensi & Laura Santis & Yair Rosenthal & Fiorenza Torricella & Luca Baradello & Davide Gei & Amy Leventer & Alix Post , 2024. "Footprint of sustained poleward warm water flow within East Antarctic submarine canyons," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    3. Stewart S. R. Jamieson & Neil Ross & Guy J. G. Paxman & Fiona J. Clubb & Duncan A. Young & Shuai Yan & Jamin Greenbaum & Donald D. Blankenship & Martin J. Siegert, 2023. "An ancient river landscape preserved beneath the East Antarctic Ice Sheet," Nature Communications, Nature, vol. 14(1), pages 1-12, December.

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