24 Jul '12, 9am

Close-up satellite view of the new 'ice island' that split off Greenland's Petermann Glacier last week.

Close-up satellite view of the new 'ice island' that split off Greenland's Petermann Glacier last week.

In July 2012, a massive ice island broke free of the Petermann Glacier in northwestern Greenland. On July 16, the giant iceberg could be seen drifting down the fjord, away from the floating ice tongue from which it calved. On July 21, 2012, the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA’s Terra satellite captured this image of the iceberg’s continuing journey. This image has been rotated and north is toward the right. ASTER combines infrared, red, and green wavelengths of light to make false-color images that help to distinguish between water and land. Water is blue, ice and snow vary in color from pale blue to white, and land areas appear brick red and brown. Clouds in the scene cast dark shadows onto the iceberg surface. Similar surface cracks appear on both the Petermann Glacier and the newly formed ice island. Nearly two years ago in...

Full article: http://earthobservatory.nasa.gov/NaturalHazards/view.php?...

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