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Some named Antarctic iceshelves. Ice shelf extending approximately 6 miles into the Antarctic Sound from Joinville Island. An ice shelf is "a floating slab of ice originating from land of considerable thickness extending from the coast (usually of great horizontal extent with a very gently sloping surface), resulting from the flow of ice sheets, initially formed by the accumulation of snow ...
Therefore, an ice shelf can vary from a large flat surface to a jumbled pile of blocks with parallel ridges. When a 'shelf' extends out to a sand bar, a ridge will form that is higher than the rest of the shelf. If there is more than one sand bar along a beach front, the ice shelf will form a ridge along each sand bar. [citation needed]
Ice field: A body of frozen water constrained by topographical features: Ice sheet: A body of frozen water more than 50,000 km 2: Inlet: a body of water, usually seawater, which has characteristics of one or more of the following: bay, cove, estuary, firth, fjord, geo, sea loch, or sound. Kettle (or kettle lake) a shallow, sediment-filled body ...
It is equivalent to the level at which a piece of ice over it would float if it were a normal ice shelf. The ceiling can therefore be conceived as an ice shelf that is grounded along its entire perimeter, which explains why it has been called a captured ice shelf. As it moves over the lake, it enters the lake at the floating line, and it leaves ...
An ice stream is a region of fast-moving ice within an ice sheet. It is a type of glacier , a body of ice that moves under its own weight. [ 2 ] They can move upwards of 1,000 metres (3,300 ft) a year, and can be up to 50 kilometres (31 mi) in width, and hundreds of kilometers in length. [ 3 ]
This ice is equivalent to around 61% of all fresh water on Earth. [7] The only other currently existing ice sheet on Earth is the Greenland ice sheet in the Arctic. [8] The Antarctic ice sheet is divided by the Transantarctic Mountains into two unequal sections called the East Antarctic Ice Sheet (EAIS) and the smaller West Antarctic Ice Sheet ...
Researchers say their findings ‘highlight the complexity and often-overlooked importance of sea ice’ to the health of ice shelves.
Ice sheets are bigger than ice shelves or alpine glaciers. Masses of ice covering less than 50,000 km 2 are termed an ice cap. An ice cap will typically feed a series of glaciers around its periphery. Although the surface is cold, the base of an ice sheet is generally warmer due to geothermal heat. In places, melting occurs and the melt-water ...