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Jakobsson M, Nilsson J, Anderson L, et al. Evidence for an ice shelf covering the central Arctic Ocean during the penultimate glaciation. Nat Commun. 2016;7:10365doi: 10.1038/ncomms10365.
Jakobsson, M., Nilsson, J., Anderson, L., Backman, J., Björk, G., Cronin, T. M., Kirchner, N., Koshurnikov, A., Mayer, L., Noormets, R., O'Regan, M., Stranne, C., Ananiev, R., Barrientos Macho, N., Cherniykh, D., Coxall, H., Eriksson, B., Flodén, T., Gemery, L., Gustafsson, �. �., Jerram, K., Johansson, C., Khortov, A., Mohammad, R., & Semiletov, I. (2016). Evidence for an ice shelf covering the central Arctic Ocean during the penultimate glaciation. Nature communications, 710365. https://doi.org/10.1038/ncomms10365
Jakobsson, Martin, et al. "Evidence for an ice shelf covering the central Arctic Ocean during the penultimate glaciation." Nature communications vol. 7 (2016): 10365. doi: https://doi.org/10.1038/ncomms10365
Jakobsson M, Nilsson J, Anderson L, Backman J, Björk G, Cronin TM, Kirchner N, Koshurnikov A, Mayer L, Noormets R, O'Regan M, Stranne C, Ananiev R, Barrientos Macho N, Cherniykh D, Coxall H, Eriksson B, Flodén T, Gemery L, Gustafsson Ö, Jerram K, Johansson C, Khortov A, Mohammad R, Semiletov I. Evidence for an ice shelf covering the central Arctic Ocean during the penultimate glaciation. Nat Commun. 2016 Jan 18;7:10365. doi: 10.1038/ncomms10365. PMID: 26778247; PMCID: PMC4735638.
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Nat Commun. 2016 Jan 18;7:10365. doi: 10.1038/ncomms10365.

Evidence for an ice shelf covering the central Arctic Ocean during the penultimate glaciation.

Nature communications

Martin Jakobsson, Johan Nilsson, Leif Anderson, Jan Backman, Göran Björk, Thomas M Cronin, Nina Kirchner, Andrey Koshurnikov, Larry Mayer, Riko Noormets, Matthew O'Regan, Christian Stranne, Roman Ananiev, Natalia Barrientos Macho, Denis Cherniykh, Helen Coxall, Björn Eriksson, Tom Flodén, Laura Gemery, Örjan Gustafsson, Kevin Jerram, Carina Johansson, Alexey Khortov, Rezwan Mohammad, Igor Semiletov

Affiliations

  1. Department of Geological Sciences, Stockholm University, Stockholm 106 91, Sweden.
  2. Bolin Centre for Climate Research, Stockholm University, Stockholm 106 91, Sweden.
  3. UNIS - The University Centre in Svalbard, Longyearbyen N-9171, Svalbard.
  4. Department of Meteorology, Stockholm University, Stockholm 106 91, Sweden.
  5. Department of Marine Sciences, University of Gothenburg, Gothenburg 405 30, Sweden.
  6. US Geological Survey Reston, 12201 Sunrise Valley Drive, Reston, Virginia 20192, USA.
  7. Department of Physical Geography, Stockholm University, Stockholm 106 91, Sweden.
  8. National Research Tomsk Polytechnic University, Tomsk 634050, Russia.
  9. Department of Geocryology, Moscow State University, Moscow 119991, Russia.
  10. Center for Coastal and Ocean Mapping, University of New Hampshire, 24 Colovos Road, Durham, New Hampshire 03824, USA.
  11. Russian Academy of Sciences, Pacific Oceanological Institute, 43 Baltiiskaya Street, Vladivostok 690041, Russia.
  12. Department of Environmental Science and Analytical Chemistry, Stockholm University, Stockholm 106 91, Sweden.

PMID: 26778247 PMCID: PMC4735638 DOI: 10.1038/ncomms10365

Abstract

The hypothesis of a km-thick ice shelf covering the entire Arctic Ocean during peak glacial conditions was proposed nearly half a century ago. Floating ice shelves preserve few direct traces after their disappearance, making reconstructions difficult. Seafloor imprints of ice shelves should, however, exist where ice grounded along their flow paths. Here we present new evidence of ice-shelf groundings on bathymetric highs in the central Arctic Ocean, resurrecting the concept of an ice shelf extending over the entire central Arctic Ocean during at least one previous ice age. New and previously mapped glacial landforms together reveal flow of a spatially coherent, in some regions >1-km thick, central Arctic Ocean ice shelf dated to marine isotope stage 6 (∼ 140 ka). Bathymetric highs were likely critical in the ice-shelf development by acting as pinning points where stabilizing ice rises formed, thereby providing sufficient back stress to allow ice shelf thickening.

References

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