Ice interaction with Adams Island, Winter 1984-85
A small island can be taken as being representative of a man- made offshore structure. A comprehensive study of ice interaction with such an island and response of the ice sheet to environmental driving forces was carried out over the winter 1984/85. Measurements included meteorological and oceanogr...
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Language: | English |
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1986
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Online Access: | https://nrc-publications.canada.ca/eng/view/ft/?id=aefdbce6-0628-4808-8f2c-9bd6a7c1aa70 https://nrc-publications.canada.ca/eng/view/object/?id=aefdbce6-0628-4808-8f2c-9bd6a7c1aa70 https://nrc-publications.canada.ca/fra/voir/objet/?id=aefdbce6-0628-4808-8f2c-9bd6a7c1aa70 |
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ftnrccanada:oai:cisti-icist.nrc-cnrc.ca:cistinparc:20331489 2024-09-15T17:34:58+00:00 Ice interaction with Adams Island, Winter 1984-85 Frederking, R. M. W. Wessels, E. Maxwell, J. B. Prinsenberg, S. Sayed, M. 1986-08-18 text https://nrc-publications.canada.ca/eng/view/ft/?id=aefdbce6-0628-4808-8f2c-9bd6a7c1aa70 https://nrc-publications.canada.ca/eng/view/object/?id=aefdbce6-0628-4808-8f2c-9bd6a7c1aa70 https://nrc-publications.canada.ca/fra/voir/objet/?id=aefdbce6-0628-4808-8f2c-9bd6a7c1aa70 eng eng 8th International IAHR Symposium on Ice: 18 August 1986, Iowa City, Iowa, United States, Publication date: 1986-08-18 report_number:IRC-P-1504 ice loads charge de glace islands île small islands ice sheet response environmental driving forces ice cover movements meteorological factors oceanographic factors in situ stresses tidal variation cyclical variations current wind air temperature maximum total load article 1986 ftnrccanada 2024-08-05T14:05:07Z A small island can be taken as being representative of a man- made offshore structure. A comprehensive study of ice interaction with such an island and response of the ice sheet to environmental driving forces was carried out over the winter 1984/85. Measurements included meteorological and oceanographic factors as well as ice-cover movements and in-situ stresses. Tidal variations, both semi-diurnal and fortnightly, appear to be responsible for variable horizontal ice-cover movement rates and hence cyclical variations in measured ice stresses. Maximum total load generated on the island was approximately 60 MN, equivalent to an average stress of 300 kPa over the top 1 m of the ice thickness and 200 m width. Local pressures over an area of 0.5 m2 reached a maximum of 500 kPa. Un îlot peut être considéré comme étant représentatif d'un ouvrage construit en mer. Une vaste étude concernant l'interaction des glaces avec un îlot et la réponse du manteau glaciel aux éléments naturels a été menée au cours de l'hiver 1984-1985. Les mesures effectuées ont porté sur les facteurs météorologiques et océanographiques, ainsi que sur les mouvements du manteau de glace et les contraintes in situ. Les variations des marées, tant semi-diurnes que semi-mensuelles, semblent être responsables de la vitesse variable de déplacement horizontal du manteau de glace et, par conséquent, des fluctuations cycliques des contraintes mesurées dans la glace. Le courant, le vent et la température de l'air ont également un effet sur les mouvements et les contraintes. La charge totale maximale exercée sur l'î lot était d'environ 60 MN, soit l'équivalent d'une contrainte moyenne de 300 kPa sur le premier mètre d'épaisseur de glace, sur une largeur de 200 m. Les pressions locales sur une surface de 0,5 m2 ont atteint un maximum de 500 kPa. Peer reviewed: Yes NRC publication: Yes Article in Journal/Newspaper Adams Island Ice Sheet National Research Council Canada: NRC Publications Archive |
institution |
Open Polar |
collection |
National Research Council Canada: NRC Publications Archive |
op_collection_id |
ftnrccanada |
language |
English |
topic |
ice loads charge de glace islands île small islands ice sheet response environmental driving forces ice cover movements meteorological factors oceanographic factors in situ stresses tidal variation cyclical variations current wind air temperature maximum total load |
spellingShingle |
ice loads charge de glace islands île small islands ice sheet response environmental driving forces ice cover movements meteorological factors oceanographic factors in situ stresses tidal variation cyclical variations current wind air temperature maximum total load Frederking, R. M. W. Wessels, E. Maxwell, J. B. Prinsenberg, S. Sayed, M. Ice interaction with Adams Island, Winter 1984-85 |
topic_facet |
ice loads charge de glace islands île small islands ice sheet response environmental driving forces ice cover movements meteorological factors oceanographic factors in situ stresses tidal variation cyclical variations current wind air temperature maximum total load |
description |
A small island can be taken as being representative of a man- made offshore structure. A comprehensive study of ice interaction with such an island and response of the ice sheet to environmental driving forces was carried out over the winter 1984/85. Measurements included meteorological and oceanographic factors as well as ice-cover movements and in-situ stresses. Tidal variations, both semi-diurnal and fortnightly, appear to be responsible for variable horizontal ice-cover movement rates and hence cyclical variations in measured ice stresses. Maximum total load generated on the island was approximately 60 MN, equivalent to an average stress of 300 kPa over the top 1 m of the ice thickness and 200 m width. Local pressures over an area of 0.5 m2 reached a maximum of 500 kPa. Un îlot peut être considéré comme étant représentatif d'un ouvrage construit en mer. Une vaste étude concernant l'interaction des glaces avec un îlot et la réponse du manteau glaciel aux éléments naturels a été menée au cours de l'hiver 1984-1985. Les mesures effectuées ont porté sur les facteurs météorologiques et océanographiques, ainsi que sur les mouvements du manteau de glace et les contraintes in situ. Les variations des marées, tant semi-diurnes que semi-mensuelles, semblent être responsables de la vitesse variable de déplacement horizontal du manteau de glace et, par conséquent, des fluctuations cycliques des contraintes mesurées dans la glace. Le courant, le vent et la température de l'air ont également un effet sur les mouvements et les contraintes. La charge totale maximale exercée sur l'î lot était d'environ 60 MN, soit l'équivalent d'une contrainte moyenne de 300 kPa sur le premier mètre d'épaisseur de glace, sur une largeur de 200 m. Les pressions locales sur une surface de 0,5 m2 ont atteint un maximum de 500 kPa. Peer reviewed: Yes NRC publication: Yes |
format |
Article in Journal/Newspaper |
author |
Frederking, R. M. W. Wessels, E. Maxwell, J. B. Prinsenberg, S. Sayed, M. |
author_facet |
Frederking, R. M. W. Wessels, E. Maxwell, J. B. Prinsenberg, S. Sayed, M. |
author_sort |
Frederking, R. M. W. |
title |
Ice interaction with Adams Island, Winter 1984-85 |
title_short |
Ice interaction with Adams Island, Winter 1984-85 |
title_full |
Ice interaction with Adams Island, Winter 1984-85 |
title_fullStr |
Ice interaction with Adams Island, Winter 1984-85 |
title_full_unstemmed |
Ice interaction with Adams Island, Winter 1984-85 |
title_sort |
ice interaction with adams island, winter 1984-85 |
publishDate |
1986 |
url |
https://nrc-publications.canada.ca/eng/view/ft/?id=aefdbce6-0628-4808-8f2c-9bd6a7c1aa70 https://nrc-publications.canada.ca/eng/view/object/?id=aefdbce6-0628-4808-8f2c-9bd6a7c1aa70 https://nrc-publications.canada.ca/fra/voir/objet/?id=aefdbce6-0628-4808-8f2c-9bd6a7c1aa70 |
genre |
Adams Island Ice Sheet |
genre_facet |
Adams Island Ice Sheet |
op_relation |
8th International IAHR Symposium on Ice: 18 August 1986, Iowa City, Iowa, United States, Publication date: 1986-08-18 report_number:IRC-P-1504 |
_version_ |
1810435213979811840 |