Credit: SVS/GSFC/NASA/SCIENCE PHOTO LIBRARY

Caption: Animation of the Greenland ice sheet melting during the summer, showing how meltwater causes the flow of glaciers to speed up. During the summer melt season, meltwater (cyan) accumulates in undulations on the surface of the ice sheet. Eventually, these melt lakes drain through crevasses or moulins (tunnels under the ice sheet surface), delivering water to the bottom of the ice sheet. Here, it lubricates the interface between the ice and the bedrock, causing the ice to flow faster toward the sea during summer. Once over the sea, the weight of the ice causes large chunks to break off, forming icebergs, a process known as calving.

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Keywords: 30 seconds or greater, accelerating, animated, animation, arctic, bedrock, calving, cold, crevasse, crevasses, cross section, demonstrating, demonstration, diagram, education, educational, environment, environmental, glaciation, glacier, glaciers, greenland, heat, ice, ice sheet, iceberg, icebergs, icy, lubricating, lubrication, melt, melting, meltwater, motion, moulin, moulins, no people, northern, rock, science, sea, sectioned, slip, slipping, speeding up, summer, temperature, warm, warming, water

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Accelerating glacier mechanics

K001/0340 Rights Managed

Downloadable master

Duration: 00:00:17.45

Frame size: 1280x720

Frame rate: 60

Audio: No

Format: QuickTime, Photo JPEG 100%, progressive scan, square pixels

File size: 779.2M

Original

Capture format: QuickTime Animation

Please contact Science Photo Library if you require the original, or other formats.

 

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