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Ice sheet, any glacier that extends in continuous sheets, moving outward in all directions, whose area exceeds more than 50,000 square km (19,000 square miles). In general, such expanses of frozen water are called ice sheets if they are the size of Antarctica or Greenland and ice caps if they are.
In glaciology, an ice sheet, also known as a continental glacier, [2] is a mass of glacial ice that covers surrounding terrain and is greater than 50,000 km 2 (19,000 sq mi). [3] The only current ice sheets are the Antarctic ice sheet and the Greenland ice sheet. Ice sheets are bigger than ice shelves or alpine glaciers.
10 lis 2023 · An ice sheet is a mass of glacial ice more than 50,000 square kilometers (19,000 square miles). Ice sheets contain about 99% of the fresh water on Earth, and are sometimes called continental glaciers. As ice sheets extend to the coast and over the ocean, they become ice shelves.
Continental glaciers are those vast masses of ice sheets covering stretches of land, mainly found in Antarctica. Such glaciers flow over large areas that are unconfined, where they bury the landscapes underneath.
29 cze 2023 · Often called continental glaciers, ice sheets refer to a glacial land ice mass that covers a land area of more than 19,000 sq. mi. Currently, ice sheets are present only in Greenland and Antarctica.
NASA's glaciers and ice sheet data help reveal ways these frozen giants influence our weather, climate, communities, and oceans. There are approximately 700,000 square kilometers of glaciers and ice sheets in the world located on every continent except Australia.
Ice sheets are continental-scale masses of ice that rest on land. The shape of an ice sheet is a dome that slopes downwards toward its edges, where the interior ice may be thousands of meters thick and the ice around the edges tens of meters thick.
