22 Oct '11, 10pm

A weird Antarctic expanse of shattered sea ice, icebergs and 'frazil' from our EO-1 satellite.

Though it is all composed of frozen water, ice is hardly uniform. On October 7, 2011, the Advanced Land Imager (ALI) on NASA’s Earth Observing-1 (EO-1) satellite captured this image of a variety of ice types off the coast of East Antarctica. Brilliant white ice fills the right half of this image. It is fast ice, and derives its name from the fact that it holds fast to the shore. This ice is thick enough to completely hide the underlying seawater, hence its brilliant white color. Trapped within the fast ice, and stuck along the edge of it, are icebergs. Icebergs form by calving off ice shelves —thick slabs of ice attached to the coast. Ice shelves can range in thickness from tens to hundreds of meters, and the icebergs that calve off of them can tower over nearby sea ice. One iceberg, drenched with meltwater, has toppled and shattered (image upper right). The water-saturate...

Full article: http://earthobservatory.nasa.gov/IOTD/view.php?id=76197

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Sea Ice and Icebergs off East Antarctica [image...

earthobservatory.nasa.gov 22 Oct '11, 10pm

Though it is all composed of frozen water, ice is hardly uniform. On October 7, 2011, the Advanced Land Imager (ALI) on NA...

Sea Ice and Icebergs off East Antarctica: Acqui...

earthobservatory.nasa.gov 22 Oct '11, 10pm

acquired October 7, 2011 download large image (4 MB, JPEG) acquired October 7, 2011 download GeoTIFF file (21 MB, TIFF) Th...

NASA Earth Observato Sea Ice and Icebergs off E...

earthobservatory.nasa.gov 22 Oct '11, 10pm

acquired October 7, 2011 download large image (4 MB, JPEG) acquired October 7, 2011 download GeoTIFF file (21 MB, TIFF) Th...

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