Articles | Volume 17, issue 11
https://doi.org/10.5194/tc-17-4917-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-17-4917-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
24 Nov 2023
Research article |
| 24 Nov 2023
| 24 Nov 2023
Antarctic permafrost processes and antiphase dynamics of cold-based glaciers in the McMurdo Dry Valleys inferred from 10Be and 26Al cosmogenic nuclides
Jacob T. H. Anderson
CORRESPONDING AUTHOR
Department of Marine Science, University of Otago, P.O. Box 56, Ōtepoti / Dunedin, Aotearoa / New Zealand
Toshiyuki Fujioka
Centro Nacional de Investigación sobre la Evolución Humana, Burgos 09002, Spain
David Fink
Australian Nuclear Science and Technology Organisation, New Illawarra Road, Lucas Heights, NSW, 2234, Australia
Alan J. Hidy
Center for Accelerator Mass Spectrometry, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
Gary S. Wilson
Department of Marine Science, University of Otago, P.O. Box 56, Ōtepoti / Dunedin, Aotearoa / New Zealand
GNS Science, P.O. Box 30368, Lower Hutt 5040, Te Whanganui-a-Tara / Wellington, Aotearoa / New Zealand
Klaus Wilcken
Australian Nuclear Science and Technology Organisation, New Illawarra Road, Lucas Heights, NSW, 2234, Australia
Andrey Abramov
Institute of Physicochemical and Biological Problems of Soil Science, Pushchino, Russia
Nikita Demidov
Arctic and Antarctic Research Institute, St. Petersburg, Russia
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Short summary
Antarctic permafrost processes are not widely studied or understood in the McMurdo Dry Valleys. Our data show that near-surface permafrost sediments were deposited ~180 000 years ago in Pearse Valley, while in lower Wright Valley sediments are either vertically mixed after deposition or were deposited < 25 000 years ago. Our data also record Taylor Glacier retreat from Pearse Valley ~65 000–74 000 years ago and support antiphase dynamics between alpine glaciers and sea ice in the Ross Sea.
Antarctic permafrost processes are not widely studied or understood in the McMurdo Dry Valleys....
