Results 1 to 10 of about 24,268 (294)
An affordable and miniature ice coring drill for rapid acquisition of small iceberg samples [PDF]
HardwareX, 2020 Icebergs account for approximately half of the freshwater flux from the Greenland Ice Sheet and they can impact marine ecosystems by releasing nutrients and sediments into the ocean as they drift and melt.
Steffen Thomsen +7 more
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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
doaj +1 more source
Energies, 2021 The target strata of sandstone-type uranium deposits are usually located in the fragile and loose strata, which makes it difficult to obtain core samples; consequently, a novel ice coring device for loose sandstone-type uranium deposits is proposed to ...
Chaoyang Huang +6 more
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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
doaj +1 more source
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
doaj +1 more source
Case Studies in Thermal Engineering, 2023 Ice cores from polar zones could determine ice dating and biodiversity. Ice cores retrieved in hot-water ice-coring drilling partly melted owing to moderate drilling speed of annular drill head with many nozzles, which was largely depended on the heat ...
An Liu +5 more
doaj +1 more source
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
doaj +1 more source
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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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