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tlr online
05-10-04, 23:42
In the Indian Ocean, about two-thirds of the way between Madagascar and Antarctica, tiny Heard Island is dominated by Mawson Peak, an active volcano that rises 2,745 meters. This uninhabited island is a territory of Australia. In this image from the Aqua MODIS on September 30, 2004, the ice- and snow-covered island is awash in a sea of clouds. As the wind blows over this large obstacle (wind direction is from lower left to upper right in this scene), a repeating pattern of swirling vortices known as a "von Karman vortex street" appears in the clouds, just like an eddy of spinning water appears downstream of a rock in a river. The turbulent vortices create pockets of clear air, though which the blue waters of the ocean peak through.

In the Indian Ocean, about two-thirds of the way between Madagascar and Antarctica, tiny Heard Island is dominated by Mawson Peak, an active volcano that rises 2,745 meters. This uninhabited island is a territory of Australia. In this image from the Aqua MODIS on September 30, 2004, the ice- and snow-covered island is awash in a sea of clouds. As the wind blows over this large obstacle (wind direction is from lower left to upper right in this scene), a repeating pattern of swirling vortices known as a "von Karman vortex street" appears in the clouds, just like an eddy of spinning water appears downstream of a rock in a river. The turbulent vortices create pockets of clear air, though which the blue waters of the ocean peak through.

http://modis.gsfc.nasa.gov/gallery/images/image10052004_md.jpg

Copyright 2004 NASA