Observations of flexural waves on the Erebus Ice Tongue, McMurdo Sound, Antarctica, and nearby sea ice
Abstract New strain data relating to flexural oscillations of the Erebus Glacier Tongue (EGT), McMurdo Sound, Antarctica, are presented and are analysed in the frequency domain. The data were collected during November 1989, just 3 months prior to the most recent calving of the ice tongue which occur...
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Cambridge University Press (CUP)
1994
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Online Access: | http://dx.doi.org/10.1017/s0022143000007462 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000007462 |
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crcambridgeupr:10.1017/s0022143000007462 2024-09-15T17:46:49+00:00 Observations of flexural waves on the Erebus Ice Tongue, McMurdo Sound, Antarctica, and nearby sea ice Squire, Vernon A. Robinson, William H. Meylan, Michael Haskell, Timothy G. 1994 http://dx.doi.org/10.1017/s0022143000007462 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000007462 en eng Cambridge University Press (CUP) Journal of Glaciology volume 40, issue 135, page 377-385 ISSN 0022-1430 1727-5652 journal-article 1994 crcambridgeupr https://doi.org/10.1017/s0022143000007462 2024-08-28T04:02:57Z Abstract New strain data relating to flexural oscillations of the Erebus Glacier Tongue (EGT), McMurdo Sound, Antarctica, are presented and are analysed in the frequency domain. The data were collected during November 1989, just 3 months prior to the most recent calving of the ice tongue which occurred in March 1990. A broad-band oscillation centred on 50 s is found in both the strain measurements collected on the EGT and those collected on the sea ice nearby. The oscillation is shown, at least in part, to be propagating with a phase velocity of approximately 65 ms −1 in a direction away from the snout towards the grounding line, rather than being wholly due to a standing-wave pattern in the EGT. A coupling model between the sea ice and the EGT is proposed and is shown to compare reasonably well with the data. Article in Journal/Newspaper Antarc* Antarctica Erebus Glacier Journal of Glaciology McMurdo Sound Sea ice Cambridge University Press Journal of Glaciology 40 135 377 385 |
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Open Polar |
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Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
Abstract New strain data relating to flexural oscillations of the Erebus Glacier Tongue (EGT), McMurdo Sound, Antarctica, are presented and are analysed in the frequency domain. The data were collected during November 1989, just 3 months prior to the most recent calving of the ice tongue which occurred in March 1990. A broad-band oscillation centred on 50 s is found in both the strain measurements collected on the EGT and those collected on the sea ice nearby. The oscillation is shown, at least in part, to be propagating with a phase velocity of approximately 65 ms −1 in a direction away from the snout towards the grounding line, rather than being wholly due to a standing-wave pattern in the EGT. A coupling model between the sea ice and the EGT is proposed and is shown to compare reasonably well with the data. |
format |
Article in Journal/Newspaper |
author |
Squire, Vernon A. Robinson, William H. Meylan, Michael Haskell, Timothy G. |
spellingShingle |
Squire, Vernon A. Robinson, William H. Meylan, Michael Haskell, Timothy G. Observations of flexural waves on the Erebus Ice Tongue, McMurdo Sound, Antarctica, and nearby sea ice |
author_facet |
Squire, Vernon A. Robinson, William H. Meylan, Michael Haskell, Timothy G. |
author_sort |
Squire, Vernon A. |
title |
Observations of flexural waves on the Erebus Ice Tongue, McMurdo Sound, Antarctica, and nearby sea ice |
title_short |
Observations of flexural waves on the Erebus Ice Tongue, McMurdo Sound, Antarctica, and nearby sea ice |
title_full |
Observations of flexural waves on the Erebus Ice Tongue, McMurdo Sound, Antarctica, and nearby sea ice |
title_fullStr |
Observations of flexural waves on the Erebus Ice Tongue, McMurdo Sound, Antarctica, and nearby sea ice |
title_full_unstemmed |
Observations of flexural waves on the Erebus Ice Tongue, McMurdo Sound, Antarctica, and nearby sea ice |
title_sort |
observations of flexural waves on the erebus ice tongue, mcmurdo sound, antarctica, and nearby sea ice |
publisher |
Cambridge University Press (CUP) |
publishDate |
1994 |
url |
http://dx.doi.org/10.1017/s0022143000007462 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000007462 |
genre |
Antarc* Antarctica Erebus Glacier Journal of Glaciology McMurdo Sound Sea ice |
genre_facet |
Antarc* Antarctica Erebus Glacier Journal of Glaciology McMurdo Sound Sea ice |
op_source |
Journal of Glaciology volume 40, issue 135, page 377-385 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000007462 |
container_title |
Journal of Glaciology |
container_volume |
40 |
container_issue |
135 |
container_start_page |
377 |
op_container_end_page |
385 |
_version_ |
1810495197776183296 |