Results 21 to 30 of about 3,234 (297)
Optimization of hot-water ice-coring drills
Annals of Glaciology, 2021 Hot-water ice-coring drills are often used to recover ice core samples from desirable depths in conjunction with full-scale hot-water drilling systems. However, the recovered cores exhibit varying qualities.
An Liu +6 more
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Proceedings of the National Academy of Sciences, 1997 Air trapped in glacial ice offers a means of reconstructing variations in the concentrations of atmospheric gases over time scales ranging from anthropogenic (last 200 yr) to glacial/interglacial (hundreds of thousands of years). In this paper, we review the glaciological processes by which air is trapped in the ice and discuss ...
M, Bender, T, Sowers, E, Brook
openaire +2 more sources
Deep ice-core drilling to 800 m at Dome A in East Antarctica
Annals of Glaciology, 2021 A deep ice core was drilled at Dome A, Antarctic Plateau, East Antarctica, which started with the installation of a casing in January 2012 and reached 800.8 m in January 2017. To date, a total of 337 successful ice-core drilling runs have been conducted,
Zhengyi Hu +13 more
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Agile Sub-Ice Geological (ASIG) Drill development and Pirrit Hills field project
Annals of Glaciology, 2021 A new drilling system was developed by the US Ice Drilling Program (IDP) to rapidly drill through overlying ice to collect subglacial rock cores. The Agile Sub-Ice Geological (ASIG) Drill system is capable of drilling up to 700 m of ice in a continuous ...
Tanner Kuhl +5 more
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Adaptation of the Winkie Drill for subglacial bedrock sampling
Annals of Glaciology, 2021 The Winkie Drill is an agile, commercially available rock coring system. The U.S. Ice Drilling Program has modified a Winkie Drill for subglacial rock and ice/rock interface coring, as well as drilling and coring access holes through ice.
Grant V. Boeckmann +6 more
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Design and analysis of deepwater tension sensors for ice drill application
Annals of Glaciology, 2021 Monitoring the tension in cables is significant in some ice drill and deepwater applications. Take our RECoverable Autonomous Sonde (RECAS) for example. It is able to melt a hole to the bottom of ice sheet and is able to move upwards.
Jianguang Shi +7 more
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Annals of Glaciology, 2021 Recent studies have shown that stratigraphically disturbed meteoric ice bedded at Vostok Station between 3318 and 3539 m dates back to 1.2 Ma BP and possibly beyond.
Aleksei V. Turkeev +6 more
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Deep ice core drilling to a depth of 3035.22 m at Dome Fuji, Antarctica in 2001–07
Annals of Glaciology, 2021 The Japanese second deep ice coring project was carried out at Dome Fuji, Antarctica. Following the drilling of the pilot hole in 2001, deep ice core drilling led by the Japanese Antarctic Research Expedition (JARE) was conducted over four austral summer
Hideaki Motoyama +11 more
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Warm ocean is eroding West Antarctic Ice Sheet [PDF]
, 2004 Satellite radar measurements show that ice shelves in Pine Island Bay have thinned by up to 5.5 m yr^{-1} over the past decade. The pattern of shelf thinning mirrors that of their grounded tributaries-the Pine Island, Thwaites and Smith glaciers- and ...
Rignot, E +5 more
core +1 more source
, 2023 The data has been collected during the expedition "Multidisciplinary drifting Observatory for the Study of Arctic Climate" (MOSAiC) from September 2019 to September 2020 on research vessel Polarstern.
Granskog, Mats A +13 more
core +1 more source