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The Davis Strait - DCE - Nationalt Center for Miljø og Energi

The Davis Strait - DCE - Nationalt Center for Miljø og Energi

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Figure 3.3.4. Major iceberg<br />

sources and general drift pattern<br />

in the West Greenland Waters.<br />

Data source: US National Ice<br />

<strong>Center</strong> (NIC).<br />

A study in the late 1970s on iceberg masses that occur on the western coast<br />

of Greenland observed low iceberg mass (0.3-0.7 million tonnes, max.: 2.8<br />

mil. tonnes) in the area between 64º and 66º N compared with iceberg masses<br />

north and south of the area (Nazareth & Steensboe 1998 and references<br />

therein). <strong>The</strong> year-to-year variability in distribution of multi-year sea ice and<br />

the presence of the Irminger current in the <strong>Davis</strong> <strong>Strait</strong> there<strong>for</strong>e concurrently<br />

determine the amount and size of icebergs reaching the assessment area.<br />

Studies of the iceberg distribution at the Fyllas Banke area in summer 2000<br />

by Karlsen et al. (2001) were predominantly of bergy bits and growlers<br />

types, mostly entering the area from southerly to northeasterly directions.<br />

More than 200 icebergs were observed during the summer period and presumably<br />

represent a normal seasonal iceberg conditions. Other studies of the<br />

iceberg distribution on the west coast of Greenland are from the late 70’ties,<br />

and summarized in later reports (Valeur et al. 1996, Karlsen et al. 2001).<br />

<strong>The</strong> majority of icebergs from Jakobshavn Isbræ, Disko Bay are carried<br />

northward to northeastern Baffin Bay and Melville Bay be<strong>for</strong>e heading<br />

61

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