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Mechanical drilling produces pieces of ice, either as cuttings, or as granular fragments, which must be removed from the bottom of the hole to prevent them from interfering with the cutting or percussing action of the drill. [25] An auger used as the cutting tool will naturally move ice cuttings up its helical flights. [31]
Agassiz's demonstration of the great difficulty of drilling deep holes in glacier ice discouraged other researchers from further efforts in this direction. [12] It was decades before further advances were made in the field, [12] but two patents, the first ice-drilling related ones to be issued, were registered in the United States in the late 19th century: in 1873, W.A. Clark received a patent ...
After working out various logistical and engineering problems related to the development of a more sophisticated drilling rig, drilling to bedrock at Dye 3 began in the summer of 1979 using a new Danish electro-mechanical ice drill yielding a 10.2 cm diameter core.
In 2023-2024 Prof Talalay was the leader of the Chinese-Russian drilling project to study the in-situ dynamics and conditions at the bed of the Northwestern Princess Elizabeth Land, East Antarctic Ice Sheet. [4] The project succeeded in penetration through the 545 m thick ice and recovered the unique 0.48 m bedrock sample.
The first was a 398 m core at Milcent and another was a 405 m core at the Crete station in 1974. After working out various logistical and engineering problems related to the development of a more sophisticated drilling rig, drilling to bedrock at Dye 3 began in the summer [when?] of 1979 using a new Danish electro-mechanical ice drill. In the ...
Mechanical drilling of the ice with non-coring or coring augers (when the ice core is retrieved for analysis). [25] Surveying, whereby a level, theodolite or a differential GPS system is used to determine sail geometry. Thermal drilling — drilling involving melting of the ice. [26] Observation of the ice canopy by scuba divers.
This is a list of ice cores drilled for scientific purposes. Note that many of these locations are on moving ice sheets, and the latitude and longitude given is as of the date of drilling. Note that many of these locations are on moving ice sheets, and the latitude and longitude given is as of the date of drilling.
As a student in 1980, Dahl-Jensen took part in ice-core drilling at the Dye 3 site on the Greenland ice sheet, a project led by Willi Dansgaard. [3] Although Dansgaard had a rule that no women were allowed at the drilling site, he allowed Dahl-Jensen to participate. [4] [5] She and her drilling partner Jørgen Peder Steffensen later married. [6]
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