Relating wave attenuation to pancake ice thickness, using field measurements and model results
Wave attenuation coefficients (a, m -1 ) were calculated from in situ data transmitted by custom wave buoys deployed into the advancing pancake ice region of the Weddell Sea. Data cover a 12day period as the buoy array was first compressed and then dilated under the influence of a passing low-pressu...
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ftunivnewcastnsw:uon:28230 2023-11-12T04:27:53+01:00 Relating wave attenuation to pancake ice thickness, using field measurements and model results Doble, Martin J. De Carolis, Giacomo Meylan, Michael H. Bidlot, Jean-Raymond Wadhams, Peter The University of Newcastle. Faculty of Science & Information Technology, School of Mathematical and Physical Sciences 2015 http://hdl.handle.net/1959.13/1339328 eng eng American Geophysical Union Geophysical Research Letters Vol. 42, Issue 11, p. 4473-4481 10.1002/2015GL063628 http://hdl.handle.net/1959.13/1339328 uon:28230 ISSN:0094-8276 ©2015. American Geophysical Union. All Rights Reserved. Wave attenuation coefficient ice thickness Weddell Sea pancake ice journal article 2015 ftunivnewcastnsw 2023-10-30T23:26:49Z Wave attenuation coefficients (a, m -1 ) were calculated from in situ data transmitted by custom wave buoys deployed into the advancing pancake ice region of the Weddell Sea. Data cover a 12day period as the buoy array was first compressed and then dilated under the influence of a passing low-pressure system. Attenuation was found to vary over more than 2 orders of magnitude and to be far higher than that observed in broken-floe marginal ice zones. A clear linear relation between a and ice thickness was demonstrated, using ice thickness from a novel dynamic/thermodynamic model. A simple expression for a in terms of wave period and ice thickness was derived, for application in research and operational models. The variation of a was further investigated with a two-layer viscous model, and a linear relation was found between eddy viscosity in the sub-ice boundary layer and ice thickness. Article in Journal/Newspaper Weddell Sea NOVA: The University of Newcastle Research Online (Australia) Weddell Sea Weddell Pancake ENVELOPE(-55.815,-55.815,52.600,52.600) |
institution |
Open Polar |
collection |
NOVA: The University of Newcastle Research Online (Australia) |
op_collection_id |
ftunivnewcastnsw |
language |
English |
topic |
Wave attenuation coefficient ice thickness Weddell Sea pancake ice |
spellingShingle |
Wave attenuation coefficient ice thickness Weddell Sea pancake ice Doble, Martin J. De Carolis, Giacomo Meylan, Michael H. Bidlot, Jean-Raymond Wadhams, Peter Relating wave attenuation to pancake ice thickness, using field measurements and model results |
topic_facet |
Wave attenuation coefficient ice thickness Weddell Sea pancake ice |
description |
Wave attenuation coefficients (a, m -1 ) were calculated from in situ data transmitted by custom wave buoys deployed into the advancing pancake ice region of the Weddell Sea. Data cover a 12day period as the buoy array was first compressed and then dilated under the influence of a passing low-pressure system. Attenuation was found to vary over more than 2 orders of magnitude and to be far higher than that observed in broken-floe marginal ice zones. A clear linear relation between a and ice thickness was demonstrated, using ice thickness from a novel dynamic/thermodynamic model. A simple expression for a in terms of wave period and ice thickness was derived, for application in research and operational models. The variation of a was further investigated with a two-layer viscous model, and a linear relation was found between eddy viscosity in the sub-ice boundary layer and ice thickness. |
author2 |
The University of Newcastle. Faculty of Science & Information Technology, School of Mathematical and Physical Sciences |
format |
Article in Journal/Newspaper |
author |
Doble, Martin J. De Carolis, Giacomo Meylan, Michael H. Bidlot, Jean-Raymond Wadhams, Peter |
author_facet |
Doble, Martin J. De Carolis, Giacomo Meylan, Michael H. Bidlot, Jean-Raymond Wadhams, Peter |
author_sort |
Doble, Martin J. |
title |
Relating wave attenuation to pancake ice thickness, using field measurements and model results |
title_short |
Relating wave attenuation to pancake ice thickness, using field measurements and model results |
title_full |
Relating wave attenuation to pancake ice thickness, using field measurements and model results |
title_fullStr |
Relating wave attenuation to pancake ice thickness, using field measurements and model results |
title_full_unstemmed |
Relating wave attenuation to pancake ice thickness, using field measurements and model results |
title_sort |
relating wave attenuation to pancake ice thickness, using field measurements and model results |
publisher |
American Geophysical Union |
publishDate |
2015 |
url |
http://hdl.handle.net/1959.13/1339328 |
long_lat |
ENVELOPE(-55.815,-55.815,52.600,52.600) |
geographic |
Weddell Sea Weddell Pancake |
geographic_facet |
Weddell Sea Weddell Pancake |
genre |
Weddell Sea |
genre_facet |
Weddell Sea |
op_relation |
Geophysical Research Letters Vol. 42, Issue 11, p. 4473-4481 10.1002/2015GL063628 http://hdl.handle.net/1959.13/1339328 uon:28230 ISSN:0094-8276 |
op_rights |
©2015. American Geophysical Union. All Rights Reserved. |
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1782341324519768064 |