Dimesional Changes of Ice Ih with Time
Abstract Two different types of experiment were reported. Both used a pure single crystal of ice freshly grown in the laboratory at 2 mm per hour. Direct volumetric measurements were made by submerging an ice crystal (volume 143 cm 3 ) in mercury in a sealed steel container and electronically monito...
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Language: | English |
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Cambridge University Press (CUP)
1978
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Online Access: | http://dx.doi.org/10.1017/s0022143000033906 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000033906 |
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crcambridgeupr:10.1017/s0022143000033906 2024-03-03T08:45:57+00:00 Dimesional Changes of Ice Ih with Time Camp, Paul R. 1978 http://dx.doi.org/10.1017/s0022143000033906 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000033906 en eng Cambridge University Press (CUP) Journal of Glaciology volume 21, issue 85, page 703 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 1978 crcambridgeupr https://doi.org/10.1017/s0022143000033906 2024-02-08T08:37:11Z Abstract Two different types of experiment were reported. Both used a pure single crystal of ice freshly grown in the laboratory at 2 mm per hour. Direct volumetric measurements were made by submerging an ice crystal (volume 143 cm 3 ) in mercury in a sealed steel container and electronically monitoring the height of the mercury in a manometer tube connected to it. Measurements over a 60 d period at —4.0°C showed a small gradual decrease in apparent volume. This could be due to the adsorption of perhaps 10 -2 cm 3 of air trapped by the mercury at the surface of the ice. The total un-certainties of the experiment are such that we believe we would have observed a volume dilation of as little as 2.5 × 10 -6 per day. Direct measurements were also made of the change in length of ice samples from the same crystal. One was cut with length parallel to c and the other perpendicular to c . Over a 28 d period, the fractional change in length at —13.7°C was less than 2 × 10 -7 per day and less than 7 × 10 -8 per day ║ c , leading to an upper bound on volume change of 7 × 10 -7 per day. We conclude that if dilation of ice occurs with time, it is less than 10 -6 per day and therefore probably not a factor which needs consideration in ordinary experiments. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 21 85 703 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes Camp, Paul R. Dimesional Changes of Ice Ih with Time |
topic_facet |
Earth-Surface Processes |
description |
Abstract Two different types of experiment were reported. Both used a pure single crystal of ice freshly grown in the laboratory at 2 mm per hour. Direct volumetric measurements were made by submerging an ice crystal (volume 143 cm 3 ) in mercury in a sealed steel container and electronically monitoring the height of the mercury in a manometer tube connected to it. Measurements over a 60 d period at —4.0°C showed a small gradual decrease in apparent volume. This could be due to the adsorption of perhaps 10 -2 cm 3 of air trapped by the mercury at the surface of the ice. The total un-certainties of the experiment are such that we believe we would have observed a volume dilation of as little as 2.5 × 10 -6 per day. Direct measurements were also made of the change in length of ice samples from the same crystal. One was cut with length parallel to c and the other perpendicular to c . Over a 28 d period, the fractional change in length at —13.7°C was less than 2 × 10 -7 per day and less than 7 × 10 -8 per day ║ c , leading to an upper bound on volume change of 7 × 10 -7 per day. We conclude that if dilation of ice occurs with time, it is less than 10 -6 per day and therefore probably not a factor which needs consideration in ordinary experiments. |
format |
Article in Journal/Newspaper |
author |
Camp, Paul R. |
author_facet |
Camp, Paul R. |
author_sort |
Camp, Paul R. |
title |
Dimesional Changes of Ice Ih with Time |
title_short |
Dimesional Changes of Ice Ih with Time |
title_full |
Dimesional Changes of Ice Ih with Time |
title_fullStr |
Dimesional Changes of Ice Ih with Time |
title_full_unstemmed |
Dimesional Changes of Ice Ih with Time |
title_sort |
dimesional changes of ice ih with time |
publisher |
Cambridge University Press (CUP) |
publishDate |
1978 |
url |
http://dx.doi.org/10.1017/s0022143000033906 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000033906 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 21, issue 85, page 703 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000033906 |
container_title |
Journal of Glaciology |
container_volume |
21 |
container_issue |
85 |
container_start_page |
703 |
_version_ |
1792501663717654528 |