Ocean tides and Heinrich events

Climate varied enormously over the most recent ice age--for example, large pulses of ice-rafted debris, originating mainly from the Labrador Sea, were deposited into the North Atlantic at roughly 7,000-year intervals, with global climatic implications. Here we show that ocean tides within the Labrad...

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Bibliographic Details
Published in:Nature (London) 2004-11, Vol.432 (7016), p.460-460
Main Authors: Arbic, Brian K., MacAyeal, Douglas R., Mitrovica, Jerry X., Milne, Glenn A.
Format: Article
Language:English
Subjects:
Basin geometry
Climate change
Ice shelves
Simulation
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Summary:Climate varied enormously over the most recent ice age--for example, large pulses of ice-rafted debris, originating mainly from the Labrador Sea, were deposited into the North Atlantic at roughly 7,000-year intervals, with global climatic implications. Here we show that ocean tides within the Labrador Sea were exceptionally large over the period spanning these huge, abrupt ice movements, which are known as Heinrich events. We propose that tides played a catalytic role in liberating iceberg armadas during that time.
ISSN:0028-0836
1476-4687
DOI:10.1038/432460a