Instruments and Methods: A Buoyancy-Stabilized Hot-Point Drill for Glacier Studies
Abstract Hot-point drills are practical for producing holes in glaciers for ice-thickness and temperature measurements, as well as other glaciological studies. Buoyancy stabilization assures a vertical attitude of the drill and a plumb hole. This is achieved by designing a drill with a heavy hot poi...
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Language: | English |
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Cambridge University Press (CUP)
1968
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Online Access: | http://dx.doi.org/10.1017/s0022143000020670 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000020670 |
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crcambridgeupr:10.1017/s0022143000020670 2024-03-03T08:46:01+00:00 Instruments and Methods: A Buoyancy-Stabilized Hot-Point Drill for Glacier Studies Aamot, Haldor W. C. 1968 http://dx.doi.org/10.1017/s0022143000020670 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000020670 en eng Cambridge University Press (CUP) Journal of Glaciology volume 7, issue 51, page 493-498 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 1968 crcambridgeupr https://doi.org/10.1017/s0022143000020670 2024-02-08T08:38:15Z Abstract Hot-point drills are practical for producing holes in glaciers for ice-thickness and temperature measurements, as well as other glaciological studies. Buoyancy stabilization assures a vertical attitude of the drill and a plumb hole. This is achieved by designing a drill with a heavy hot point and a light upper section which is buoyant in the surrounding melt water. The buoyant force is less than the weight of the drill in air but its rectifying moment about the fulcrum (the tip) is greater than the tilting moment of the drill weight. Two methods to prevent refreezing of the melt water are proposed in order to permit drilling in cold ice and to assure continued access to the hole. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Tilting ENVELOPE(-54.065,-54.065,49.700,49.700) Fulcrum ENVELOPE(161.117,161.117,-78.033,-78.033) Journal of Glaciology 7 51 493 498 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes Aamot, Haldor W. C. Instruments and Methods: A Buoyancy-Stabilized Hot-Point Drill for Glacier Studies |
topic_facet |
Earth-Surface Processes |
description |
Abstract Hot-point drills are practical for producing holes in glaciers for ice-thickness and temperature measurements, as well as other glaciological studies. Buoyancy stabilization assures a vertical attitude of the drill and a plumb hole. This is achieved by designing a drill with a heavy hot point and a light upper section which is buoyant in the surrounding melt water. The buoyant force is less than the weight of the drill in air but its rectifying moment about the fulcrum (the tip) is greater than the tilting moment of the drill weight. Two methods to prevent refreezing of the melt water are proposed in order to permit drilling in cold ice and to assure continued access to the hole. |
format |
Article in Journal/Newspaper |
author |
Aamot, Haldor W. C. |
author_facet |
Aamot, Haldor W. C. |
author_sort |
Aamot, Haldor W. C. |
title |
Instruments and Methods: A Buoyancy-Stabilized Hot-Point Drill for Glacier Studies |
title_short |
Instruments and Methods: A Buoyancy-Stabilized Hot-Point Drill for Glacier Studies |
title_full |
Instruments and Methods: A Buoyancy-Stabilized Hot-Point Drill for Glacier Studies |
title_fullStr |
Instruments and Methods: A Buoyancy-Stabilized Hot-Point Drill for Glacier Studies |
title_full_unstemmed |
Instruments and Methods: A Buoyancy-Stabilized Hot-Point Drill for Glacier Studies |
title_sort |
instruments and methods: a buoyancy-stabilized hot-point drill for glacier studies |
publisher |
Cambridge University Press (CUP) |
publishDate |
1968 |
url |
http://dx.doi.org/10.1017/s0022143000020670 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000020670 |
long_lat |
ENVELOPE(-54.065,-54.065,49.700,49.700) ENVELOPE(161.117,161.117,-78.033,-78.033) |
geographic |
Tilting Fulcrum |
geographic_facet |
Tilting Fulcrum |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 7, issue 51, page 493-498 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000020670 |
container_title |
Journal of Glaciology |
container_volume |
7 |
container_issue |
51 |
container_start_page |
493 |
op_container_end_page |
498 |
_version_ |
1792501817562628096 |