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Mega Iceberg Survivor: Earth Image of the Week October 7, 2011
Astronaut photo of Greenland iceberg.
Glacial ponds and small streams can be seen on a remaining fragment of ice that broke off of Greenland's Petermann Glacier in August 2010.
More than a year after a huge chunk of Greenland’s Petermann Glacier broke into the waters between that ice-capped island and Canada’s Baffin Island, a portion of it still survives just off Newfoundland.

Once about five times the size of Manhattan Island, the Petermann ice island has splintered several times on its 2,500-mile journey into warmer waters to the south.

According to NASA observers, its larger surviving fragments still behave a lot like the massive ice sheet they split from 14 months ago.

The digital photograph of the ice island seen in the upper right was taken on August 29, 2011, by an astronaut orbiting aboard the International Space Station.

Known as fragment 2, the iceberg is dotted with glacial ponds an pools, similar to those that melt each summer on Greenland’s glaciers.

Also visible are a network of small creeks flowing to the sea, comparable to rivers and streams on land areas.

In some portions of fragment 2, the creeks appear to end at cracks in the ice, then flow downward to the base of the island.

When this photo was taken, fragment 2 was located a few miles to the northeast of the Horse Islands, just off northeastern Newfoundland.

Before splitting with several other chunks of ice in early August, it became grounded on a shoal or shallow seafloor off St. Anthony, Newfoundland, where it sat for 11 days.

Full story and image: NASA