Bubble Pressure in Greenland Icebergs
Abstract A simple technique for measuring the pressure in individual bubbles of gas in glaciers is described. By this technique, bubble pressures in twenty-six west Greenland icebergs were measured. The bubbles were for the most part tubular in shape and oriented parallel, lending a fibrous and some...
Published in: | Journal of Glaciology |
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Language: | English |
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Cambridge University Press (CUP)
1960
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Online Access: | http://dx.doi.org/10.1017/s0022143000017950 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000017950 |
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crcambridgeupr:10.1017/s0022143000017950 2024-03-03T08:44:56+00:00 Bubble Pressure in Greenland Icebergs Scholander, P. F. Nutt, D. C. 1960 http://dx.doi.org/10.1017/s0022143000017950 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000017950 en eng Cambridge University Press (CUP) Journal of Glaciology volume 3, issue 28, page 671-678 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 1960 crcambridgeupr https://doi.org/10.1017/s0022143000017950 2024-02-08T08:37:11Z Abstract A simple technique for measuring the pressure in individual bubbles of gas in glaciers is described. By this technique, bubble pressures in twenty-six west Greenland icebergs were measured. The bubbles were for the most part tubular in shape and oriented parallel, lending a fibrous and sometimes stratified appearance to the ice. Various suggestions are offered for the formation of these bubbles. Most bubbles had a pressure of 4–5 atmospheres, and pressures as high as 20 atmospheres were recorded. In closely adjacent bubbles differences of 2–5 atmospheres were often measured, which indicated diffusion tightness and lack of plasticity in the ice. When the ice surface melts, the bubbles expand at the cost of water extrusion. The various factors contributing to the maintenance of vertical walls characteristic of tabular bergs are discussed. Article in Journal/Newspaper Greenland Journal of Glaciology Cambridge University Press Greenland Journal of Glaciology 3 28 671 678 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes Scholander, P. F. Nutt, D. C. Bubble Pressure in Greenland Icebergs |
topic_facet |
Earth-Surface Processes |
description |
Abstract A simple technique for measuring the pressure in individual bubbles of gas in glaciers is described. By this technique, bubble pressures in twenty-six west Greenland icebergs were measured. The bubbles were for the most part tubular in shape and oriented parallel, lending a fibrous and sometimes stratified appearance to the ice. Various suggestions are offered for the formation of these bubbles. Most bubbles had a pressure of 4–5 atmospheres, and pressures as high as 20 atmospheres were recorded. In closely adjacent bubbles differences of 2–5 atmospheres were often measured, which indicated diffusion tightness and lack of plasticity in the ice. When the ice surface melts, the bubbles expand at the cost of water extrusion. The various factors contributing to the maintenance of vertical walls characteristic of tabular bergs are discussed. |
format |
Article in Journal/Newspaper |
author |
Scholander, P. F. Nutt, D. C. |
author_facet |
Scholander, P. F. Nutt, D. C. |
author_sort |
Scholander, P. F. |
title |
Bubble Pressure in Greenland Icebergs |
title_short |
Bubble Pressure in Greenland Icebergs |
title_full |
Bubble Pressure in Greenland Icebergs |
title_fullStr |
Bubble Pressure in Greenland Icebergs |
title_full_unstemmed |
Bubble Pressure in Greenland Icebergs |
title_sort |
bubble pressure in greenland icebergs |
publisher |
Cambridge University Press (CUP) |
publishDate |
1960 |
url |
http://dx.doi.org/10.1017/s0022143000017950 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000017950 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Journal of Glaciology |
genre_facet |
Greenland Journal of Glaciology |
op_source |
Journal of Glaciology volume 3, issue 28, page 671-678 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000017950 |
container_title |
Journal of Glaciology |
container_volume |
3 |
container_issue |
28 |
container_start_page |
671 |
op_container_end_page |
678 |
_version_ |
1792500468987985920 |