Structure of Haida Eddies and Their Transport of Nutrient from Coastal Margins into the NE Pacific Ocean |
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| Authors: | Frank Whitney Marie Robert |
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| Institution: | (1) Institute of Ocean Sciences, Fisheries and Oceans Canada, Sidney, B.C., V8L 4B2, Canada |
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| Abstract: | Anticyclonic mesoscale eddies form near shore each winter in the Gulf of Alaska. One site near the Queen Charlotte Islands
is shown to produce eddies that transport from 3000 to 6000 km3 of coastal water up to 1000 km westward. Eddies carry shelf nutrients either into the high nutrient, low chlorophyll waters
of the NE Pacific, or in a more southerly direction into seasonally nitrate depleted waters. A large eddy sampled in summer
1998 was found to have elevated particulate levels on its perimeter. Nitrate supplied to the euphotic zone by this eddy during
its natal summer is estimated to be three times greater than the usual seasonal nutrient transport in the Gulf of Alaska.
This revised version was published online in August 2006 with corrections to the Cover Date. |
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| Keywords: | Anticyclonic eddies NE Pacific nutrients nitrate silicate POC |
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