Mid- to Late Pleistocene Ice Drift in the Western Arctic Ocean: Evidence for a Different Circulation in the Past

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Science  04 Jul 1997:
Vol. 277, Issue 5322, pp. 74-78
DOI: 10.1126/science.277.5322.74

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The provenance of ice-rafted debris (IRD) in four Arctic sediment cores implies that icebergs from the northwestern Laurentide ice sheets drifted across the western Arctic Ocean along the 180°–0° meridian toward Fram Strait during mid- to late Pleistocene deglaciations within the last 700,000 years. This iceberg drift was different from the present-day Beaufort Gyre circulation and resembled a dislocated transpolar drift (TPD). Sea ice mainly followed the iceberg trajectories but also frequently drifted from the Russian shelves eastward into the Amerasian Basin.

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