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22 Feb '12, 11pm

Mackenzie Bay, Antarctica [image] #NASA

Off the northeastern edge of Antarctica’sAmery Ice Shelf lies Mackenzie Bay, which was painted with a ghostly blue-green mass in early February 2012. Similarly colored tendrils also streamed northward across the ocean, their flow sometimes interrupted by icebergs. Multiple factors might account for the ghostly shapes, including low-lying clouds or katabatic winds —downslope winds blowing toward the coast, which can freeze the water at the ocean surface. But an intriguing and perhaps more likely explanation involves processes occurring below the ice shelf. An ice shelf is a thick slab of ice often fed by glaciers attached to the coastline. The shelf floats on the ocean surface, with seawater circulating underneath. Like most ice shelves, the Amery is very thick in the upstream area near the shore. It thins significantly as it stretches northward away from the continent. Wat...

Full article: http://earthobservatory.nasa.gov/IOTD/view.php?id=77207&s...

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Iceberg shards & ghostly tendrils stream from a...

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Off the northeastern edge of Antarctica’s Amery Ice Shelf lies Mackenzie Bay, which was painted with a ghostly blue-green ...

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The Aral Sea, Before the Streams Ran Dry [image] #NASA

The Aral Sea, Before the Streams Ran Dry [image...

earthobservatory.nasa.gov 23 Feb '12, 11pm

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Snow and Volcanoes on Kamchatka [image] #NASA

earthobservatory.nasa.gov 25 Feb '12, 11pm

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Heavy Snow in Lebanon and Syria [image] #NASA

Heavy Snow in Lebanon and Syria [image] #NASA

earthobservatory.nasa.gov 21 Feb '12, 9pm

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Lake Fitri, Chad [image] #NASA

earthobservatory.nasa.gov 19 Feb '12, 11pm

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Guam [image] #NASA

earthobservatory.nasa.gov 18 Feb '12, 11pm

Guam has two seasons: wet (June to December) and dry (January to June), and ALI acquired this image during the transition ...

Dust over the Arabian Sea [image] #NASA

Dust over the Arabian Sea [image] #NASA

earthobservatory.nasa.gov 24 Feb '12, 10pm

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What did John Glenn see? [image] #NASA

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