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Kármán Vortex Streets by Canary Islands – June 13th, 2011

27.9N 15.3W

June 13th, 2011 Category: Clouds, Image of the day, Phytoplankton

Canary Islands - June 10th, 2011

The Canary Islands, an archipelago off the western coast of Africa (Morocco and Western Sahara) that belongs to Spain,  can be seen in the upper left quadrant of this image.

Trailing off the islands to the southwest are lines called Kármán Vortex Streets. These double rows of vortices are caused by the unsteady separation of flow of a fluid over bluff bodies (in this case, the islands).

Visible further down the coast to the south is the Bay of Arguin, by Mauritania. The bay appears green in color due to phytoplankton growth.

 

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