Wave Propagation in Frazil/Pancake Ice: The Beaufort Sea MIZ during Fall 2015
The wave frequency and the physical properties of the ice cover determine the way in which waves propagate in ice. Large floes interact with waves via a scattering process which results in an exponential decay of incoming wave energy with distance. Very small floes, like pancake ice where the indivi...
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ftupmarcheiris:oai:iris.univpm.it:11566/265479 2024-01-28T10:04:01+01:00 Wave Propagation in Frazil/Pancake Ice: The Beaufort Sea MIZ during Fall 2015 Peter Wadhams Giuseppe Aulicino Flavio Parmiggiani Wadhams, Peter Aulicino, Giuseppe Parmiggiani, Flavio 2018 http://hdl.handle.net/11566/265479 https://www.polar2018.org/uploads/2/4/6/0/24605948/polar2018_abstractproceedings.pdf eng eng WSL Institute for Snow and Avalanche Research SLF country:CHE place:Davos Dorf info:eu-repo/semantics/altIdentifier/isbn/978-0-948277-54-2 ispartofbook:Polar 2018 - Where the Poles come together - Abstract Proceedings Polar2018: Where the Poles come together - Open Science Conference firstpage:1286 lastpage:1286 numberofpages:1 http://hdl.handle.net/11566/265479 https://www.polar2018.org/uploads/2/4/6/0/24605948/polar2018_abstractproceedings.pdf marginal ice zone Arctic Ocean sea ice info:eu-repo/semantics/conferenceObject 2018 ftupmarcheiris 2024-01-03T17:43:36Z The wave frequency and the physical properties of the ice cover determine the way in which waves propagate in ice. Large floes interact with waves via a scattering process which results in an exponential decay of incoming wave energy with distance. Very small floes, like pancake ice where the individual cakes may be less than 3 m in diameter, interact in a different manner; they behave like a continuum and can be considered as a very viscous fluid which not only causes decay of the waves but also causes them to propagate with a different dispersion relation. A careful analysis of in situ measurements, collected in the Beaufort Sea during fall 2015 through the use of directional wave buoys, has allowed us to examine attenuation rates, spectral spread rates and anomalous dispersion for different ice conditions met in the MIZ during several in situ experiments. The buoys deployments lasted 1-3 days temporally and spanned up to 100 km spatially. After inter-calibrating the buoys, the vertical displacement (heave) time series for the buoys was hence analyzed for calculation of the scalar wave energy spectra and bulk wave parameters (i.e., significant wave height, dominant wave period). As expected, our measurements show that waves play an important role in inhibiting the fall freeze-up of the Beaufort Sea, especially near the ice edge facing the prevailing easterly winds. Results on the attenuation of waves in different MIZ conditions are presented and discussed. Conference Object Arctic Arctic Ocean Beaufort Sea Sea ice Università Politecnica delle Marche: IRIS Arctic Arctic Ocean Pancake ENVELOPE(-55.815,-55.815,52.600,52.600) |
institution |
Open Polar |
collection |
Università Politecnica delle Marche: IRIS |
op_collection_id |
ftupmarcheiris |
language |
English |
topic |
marginal ice zone Arctic Ocean sea ice |
spellingShingle |
marginal ice zone Arctic Ocean sea ice Peter Wadhams Giuseppe Aulicino Flavio Parmiggiani Wave Propagation in Frazil/Pancake Ice: The Beaufort Sea MIZ during Fall 2015 |
topic_facet |
marginal ice zone Arctic Ocean sea ice |
description |
The wave frequency and the physical properties of the ice cover determine the way in which waves propagate in ice. Large floes interact with waves via a scattering process which results in an exponential decay of incoming wave energy with distance. Very small floes, like pancake ice where the individual cakes may be less than 3 m in diameter, interact in a different manner; they behave like a continuum and can be considered as a very viscous fluid which not only causes decay of the waves but also causes them to propagate with a different dispersion relation. A careful analysis of in situ measurements, collected in the Beaufort Sea during fall 2015 through the use of directional wave buoys, has allowed us to examine attenuation rates, spectral spread rates and anomalous dispersion for different ice conditions met in the MIZ during several in situ experiments. The buoys deployments lasted 1-3 days temporally and spanned up to 100 km spatially. After inter-calibrating the buoys, the vertical displacement (heave) time series for the buoys was hence analyzed for calculation of the scalar wave energy spectra and bulk wave parameters (i.e., significant wave height, dominant wave period). As expected, our measurements show that waves play an important role in inhibiting the fall freeze-up of the Beaufort Sea, especially near the ice edge facing the prevailing easterly winds. Results on the attenuation of waves in different MIZ conditions are presented and discussed. |
author2 |
Wadhams, Peter Aulicino, Giuseppe Parmiggiani, Flavio |
format |
Conference Object |
author |
Peter Wadhams Giuseppe Aulicino Flavio Parmiggiani |
author_facet |
Peter Wadhams Giuseppe Aulicino Flavio Parmiggiani |
author_sort |
Peter Wadhams |
title |
Wave Propagation in Frazil/Pancake Ice: The Beaufort Sea MIZ during Fall 2015 |
title_short |
Wave Propagation in Frazil/Pancake Ice: The Beaufort Sea MIZ during Fall 2015 |
title_full |
Wave Propagation in Frazil/Pancake Ice: The Beaufort Sea MIZ during Fall 2015 |
title_fullStr |
Wave Propagation in Frazil/Pancake Ice: The Beaufort Sea MIZ during Fall 2015 |
title_full_unstemmed |
Wave Propagation in Frazil/Pancake Ice: The Beaufort Sea MIZ during Fall 2015 |
title_sort |
wave propagation in frazil/pancake ice: the beaufort sea miz during fall 2015 |
publisher |
WSL Institute for Snow and Avalanche Research SLF |
publishDate |
2018 |
url |
http://hdl.handle.net/11566/265479 https://www.polar2018.org/uploads/2/4/6/0/24605948/polar2018_abstractproceedings.pdf |
long_lat |
ENVELOPE(-55.815,-55.815,52.600,52.600) |
geographic |
Arctic Arctic Ocean Pancake |
geographic_facet |
Arctic Arctic Ocean Pancake |
genre |
Arctic Arctic Ocean Beaufort Sea Sea ice |
genre_facet |
Arctic Arctic Ocean Beaufort Sea Sea ice |
op_relation |
info:eu-repo/semantics/altIdentifier/isbn/978-0-948277-54-2 ispartofbook:Polar 2018 - Where the Poles come together - Abstract Proceedings Polar2018: Where the Poles come together - Open Science Conference firstpage:1286 lastpage:1286 numberofpages:1 http://hdl.handle.net/11566/265479 https://www.polar2018.org/uploads/2/4/6/0/24605948/polar2018_abstractproceedings.pdf |
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1789329597357096960 |