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The underside of an old iceberg.
Date Taken:
February 15, 2011
Photograph By:
Ethan Norris, NSF

Iceberg Alley is a region in the western Weddell Sea where a large concentration of icebergs move in a north-northeast direction following the clockwise circulation around the Weddell Sea gyre. Large, old icebergs contain centuries of windblown sediment and minerals, visible as layers when they roll over. Scientists have analyzed the relationship between iron and nutrients contained in these icebergs and the organic carbon production that is released into the ecosystem. Several seabirds are flying near the iceberg.

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