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An ice core is a core sample that is typically removed from an ice sheet or a high mountain glacier. Since the ice forms from the incremental buildup of annual layers of snow, lower layers are older than upper ones, and an ice core contains ice formed over a range of years. Cores are drilled with hand augers (for shallow holes) or powered ...
The ice must be cut through, broken up, or melted. Tools can be directly pushed into snow and firn (snow that is compressed, but not yet turned to ice, which typically happens at a depth of 60 metres (200 ft) to 120 metres (390 ft)); [22] this method is not effective in ice, but it is perfectly adequate for obtaining samples from the uppermost layers. [23]
An icemaker, ice generator, or ice machine may refer to either a consumer device for making ice, found inside a home freezer; a stand-alone appliance for making ice, or an industrial machine for making ice on a large scale. The term "ice machine" usually refers to the stand-alone appliance. The ice generator is the part of the ice machine that ...
The Greenland Ice Core Project (GRIP) was a research project organized through the European Science Foundation (ESF). [1] The project ran from 1989 to 1995, with drilling seasons from 1990 to 1992. [2] In 1988, the project was accepted as an ESF-associated program, and the fieldwork was started in Greenland in the summer of 1989.
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The Byrd Polar Research Center (BPRC) at Ohio State University was established in 1960 as the Institute for Polar Studies. BPRC is the oldest research center at Ohio State University. [2] The name was changed to the Byrd Polar Research Center in 1987 after the polar explorer and aviator Richard E. Byrd when Ohio State purchased the Byrd papers ...
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The drilling site of the North Greenland Ice Core Project (NGRIP or NorthGRIP) is near the center of Greenland (75.1 N, 42.32 W, 2917 m, ice thickness 3085). Drilling began in 1999 and was completed at bedrock in 2003. [1] The cores are cylinders of ice 11 centimeters in diameter that were brought to the surface in 3.5-meter lengths.