Moving loads on sea ice
ABSTRACT A load moving on sea ice, whether the weight of a vehicle or the pressure exerted by a low-flying aircraft, produces a deflection which can in extreme cases cause ice failure. The magnitude and shape of the deflection profile depends on the weight and speed of the vehicle) and also the the...
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Cambridge University Press (CUP)
1987
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Online Access: | http://dx.doi.org/10.1017/s0032247400008068 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247400008068 |
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crcambridgeupr:10.1017/s0032247400008068 2024-03-03T08:38:39+00:00 Moving loads on sea ice Squire, V. A. Langhorne, P. J. Robinson, W. H. Heine, A. J. Haskell, T. G. 1987 http://dx.doi.org/10.1017/s0032247400008068 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247400008068 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Polar Record volume 23, issue 146, page 569-575 ISSN 0032-2474 1475-3057 General Earth and Planetary Sciences Ecology Geography, Planning and Development journal-article 1987 crcambridgeupr https://doi.org/10.1017/s0032247400008068 2024-02-08T08:25:13Z ABSTRACT A load moving on sea ice, whether the weight of a vehicle or the pressure exerted by a low-flying aircraft, produces a deflection which can in extreme cases cause ice failure. The magnitude and shape of the deflection profile depends on the weight and speed of the vehicle) and also the the ice thickness and properties, with flexuralgraviry waves radiating from the source at speeds above a critical value. This wave pattern was studied in detail on flat, snow-free sea ice in McMurdo Sound, Antarctica. Surface strain was measured directly and microcracking activity monitored to correlate measured strain with possible generation of dangerous cracks. Speeds of up to 28 m sec -1 (60 mph) were achieved with a pickup truck, and up to 80 m sec -1 with a US Navy C131 aircraft. Initial comparison between theory and experimental results is very encouraging. Article in Journal/Newspaper Antarc* Antarctica McMurdo Sound Polar Record Sea ice Cambridge University Press McMurdo Sound Polar Record 23 146 569 575 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
General Earth and Planetary Sciences Ecology Geography, Planning and Development |
spellingShingle |
General Earth and Planetary Sciences Ecology Geography, Planning and Development Squire, V. A. Langhorne, P. J. Robinson, W. H. Heine, A. J. Haskell, T. G. Moving loads on sea ice |
topic_facet |
General Earth and Planetary Sciences Ecology Geography, Planning and Development |
description |
ABSTRACT A load moving on sea ice, whether the weight of a vehicle or the pressure exerted by a low-flying aircraft, produces a deflection which can in extreme cases cause ice failure. The magnitude and shape of the deflection profile depends on the weight and speed of the vehicle) and also the the ice thickness and properties, with flexuralgraviry waves radiating from the source at speeds above a critical value. This wave pattern was studied in detail on flat, snow-free sea ice in McMurdo Sound, Antarctica. Surface strain was measured directly and microcracking activity monitored to correlate measured strain with possible generation of dangerous cracks. Speeds of up to 28 m sec -1 (60 mph) were achieved with a pickup truck, and up to 80 m sec -1 with a US Navy C131 aircraft. Initial comparison between theory and experimental results is very encouraging. |
format |
Article in Journal/Newspaper |
author |
Squire, V. A. Langhorne, P. J. Robinson, W. H. Heine, A. J. Haskell, T. G. |
author_facet |
Squire, V. A. Langhorne, P. J. Robinson, W. H. Heine, A. J. Haskell, T. G. |
author_sort |
Squire, V. A. |
title |
Moving loads on sea ice |
title_short |
Moving loads on sea ice |
title_full |
Moving loads on sea ice |
title_fullStr |
Moving loads on sea ice |
title_full_unstemmed |
Moving loads on sea ice |
title_sort |
moving loads on sea ice |
publisher |
Cambridge University Press (CUP) |
publishDate |
1987 |
url |
http://dx.doi.org/10.1017/s0032247400008068 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247400008068 |
geographic |
McMurdo Sound |
geographic_facet |
McMurdo Sound |
genre |
Antarc* Antarctica McMurdo Sound Polar Record Sea ice |
genre_facet |
Antarc* Antarctica McMurdo Sound Polar Record Sea ice |
op_source |
Polar Record volume 23, issue 146, page 569-575 ISSN 0032-2474 1475-3057 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0032247400008068 |
container_title |
Polar Record |
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23 |
container_issue |
146 |
container_start_page |
569 |
op_container_end_page |
575 |
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1792507073713405952 |