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Quaternary Sea-ice history in the Arctic Ocean based on a new Ostracode sea-ice proxy

Quaternary Science Reviews

By:
, , , , ,
DOI: 10.1016/j.quascirev.2010.05.024

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Abstract

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. ?? 2010.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Quaternary Sea-ice history in the Arctic Ocean based on a new Ostracode sea-ice proxy
Series title:
Quaternary Science Reviews
DOI:
10.1016/j.quascirev.2010.05.024
Volume
29
Issue:
25-26
Year Published:
2010
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
3415
Last page:
3429
Number of Pages:
15