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Quaternary Sea-ice history in the Arctic Ocean based on a new Ostracode sea-ice proxy
Stockholm University, Faculty of Science, Department of Geological Sciences. (Marin geologi)
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2010 (English)In: Quaternary Science Reviews, ISSN 0277-3791, Vol. 29, no 25-26, 3415-3429 p.Article in journal (Refereed) Published
Abstract [en]

Paleo-sea-ice history in the Arctic Ocean was reconstructed using the sea-ice dwelling ostracode Acetabulastoma arcticum from late Quaternary sediments from the Mendeleyev, Lomonosov, and Gakkel Ridges, the Morris Jesup Rise and the Yermak Plateau. Results suggest intermittently high levels of perennial sea ice in the central Arctic Ocean during Marine Isotope Stage (MIS) 3 (25–45 ka), minimal sea ice during the last deglacial (16–11 ka) and early Holocene thermal maximum (11–5 ka) and increasing sea ice during the mid-to-late Holocene (5–0 ka). Sediment core records from the Iceland and Rockall Plateaus show that perennial sea ice existed in these regions only during glacial intervals MIS 2, 4, and 6. These results show that sea ice exhibits complex temporal and spatial variability during different climatic regimes and that the development of modern perennial sea ice may be a relatively recent phenomenon.

Place, publisher, year, edition, pages
2010. Vol. 29, no 25-26, 3415-3429 p.
Keyword [en]
Arctic Ocean, Sea Ice
National Category
Earth and Related Environmental Sciences
Research subject
URN: urn:nbn:se:su:diva-47297DOI: 10.1016/j.quascirev.2010.05.024ISI: 000284724400006OAI: diva2:373563
Available from: 2010-12-07 Created: 2010-11-30 Last updated: 2011-11-21Bibliographically approved

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