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Image: Pressure ridge -- where two ice floes meet

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Pressure_ridge_--_where_two_ice_floes_meet.jpg(500 × 375 pixels, file size: 29 KB, MIME type: image/jpeg)

Description: A long ridge of ice that has formed when two floes of thick ice have been squeezed together by wind or ocean currents, with the ice breaking into chunks that pile upward and also downward below the ice. This ice is difficult to cross on foot or with sleds or snowmobiles.
Title: Pressure ridge -- where two ice floes meet
Credit: http://sealevel2.jpl.nasa.gov/jr_oceanographer/oceanographer-holt.html
Author: Photos courtesy of Ben Holt and Susan Digby
Usage Terms: Public domain
License: Public domain
Attribution Required?: No

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