05 May '12, 10pm

Sea Ice in Alaska’s Bristol Bay

View Image Comparison View Both Images Over the winter of 2011–2012, the extent of sea ice in the Arctic Ocean was slightly below the 1979–2000 average, but conditions in the Bering Sea were different. There, sea ice extents were well above normal, reaching a record high in March 2012. Two factors contributed to the extensive sea ice cover: low air temperatures and persistent northerly winds. The winds pushed ice from the Arctic Ocean southward toward the Bering Strait. Since the strait is narrow and shallow, it allowed little room for the ice to move. The ice gradually piled up and formed an arch. Unlike a vertical arch, this ice arch was a continuous, horizontal band that worked like a keystone arch in a building, holding everything in place. The arch spanned the strait and blocked the southward movement of ice for a while, but then collapsed along its southern margin an...

Full article: http://earthobservatory.nasa.gov/IOTD/view.php?id=77832&s...

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Sea Ice in Alaska’s Bristol Bay: Acquired April...

earthobservatory.nasa.gov 05 May '12, 10pm

View Image Comparison View Both Images Over the winter of 2011–2012, the extent of sea ice in the Arctic Ocean was slightl...

Sea Ice in Alaska's Bristol Bay [image] #NASA

earthobservatory.nasa.gov 05 May '12, 10pm

View Image Comparison View Both Images Over the winter of 2011–2012, the extent of sea ice in the Arctic Ocean was slightl...

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