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Glaciers, Ice Caps & Icebergs |
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Glaciers, Ice Caps & IcebergsGlaciers are made up of fallen snow that has compressed into large ice masses. Glaciers form when snow remains in one location over many years and transform over time into ice. Glaciers move due to their sheer mass and flow like very slow rivers. Some glaciers are as small as a football field while others grow to be over a hundred kilometers long. Glaciers occupy about 10 percent of the world's total land area. An ice cap is a cover of ice that centers around a specific point on the surface of a piece of land. The Penny Ice Cap on Baffin Island in Auyuittuq Park is believed by many to be the birthplace of the last ice age. The Penny Ice Cap is huge. It covers over 5,000 square kilometers (2,200 square miles) with ice as thick as 300 meters (1,000 ft) in places. The ice cap provides an excellent record of past climates and has been the base for several major scientific studies into climatic change and global warming.
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Iceberg in the spring Small icebergs in the bay Close-up of iceberg
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What is an Iceberg?An iceberg is a mass of ice that has broken off part of a glacier and has fallen into a nearby body of water. Icebergs consists of solid freshwater water ice. They float because the density of the ice is less than the density of sea water. Many icebergs are moulded into unusual shapes by the wind, waves and the process of melting. Icebergs have been compared to mountains, pyramids and castles. About 10,000 to 30,000 are produced each year. Because nine-tenths of an iceberg is under water, iceberg movement is mostly caused by water currents. Iceberg Facts
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