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Helicopter view of meltwater channels on the ice.

Helicopter view of meltwater channels on the ice.
Helicopter view of meltwater channels on the ice.
Helicopter view of meltwater channels on the ice.
Helicopter view of meltwater channels on the ice.
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334376
Linder, Christopher L.
Helicopter view of meltwater channels on the ice.
Still Image
07/14/2008
graphics/PD4_greenland/cl_20080714102404.jpg
From the helicopter, deep meltwater channels on the ice become clearly visible. As the lake fills, the channels overflow and become hidden from view when standing on land. Only through an aerial survey can you see features like this in detail. By coordinating GPS positions with digital photographs, researchers can precisely map the locations of these lakes and compare their observations with satellite images.
Image of The Day caption:
From a helicopter, deep meltwater channels on Greenland's massive ice sheet become visible. Lakes form on the ice each summer as the sun returns. As lakes fill, the channels overflow and become hidden from view when standing on land. Only through an aerial survey can you see features like this in detail. By coordinating GPS positions with digital photographs, researchers can precisely map the locations of these lakes, which they are studying to learn about climate change. They also compare their observations with satellite images.
Photo by Chris Linder
© Woods Hole Oceanographic Institution
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