Physical drivers of ocean wave attenuation in the marginal ice zone
Despite a recent resurgence of observational studies attempting to quantify the ice-induced attenuation of ocean waves in polar oceans, the physical processes governing this wave attenuation phenomenon are still poorly understood. Most analyses have attempted to relate the spatial rate of wave atten...
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ftdatacite:10.48550/arxiv.2111.04819 2023-05-15T18:07:34+02:00 Physical drivers of ocean wave attenuation in the marginal ice zone Montiel, Fabien Kohout, Alison L. Roach, Lettie A. 2021 https://dx.doi.org/10.48550/arxiv.2111.04819 https://arxiv.org/abs/2111.04819 unknown arXiv arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ Atmospheric and Oceanic Physics physics.ao-ph Geophysics physics.geo-ph FOS Physical sciences 86-11 Article CreativeWork article Preprint 2021 ftdatacite https://doi.org/10.48550/arxiv.2111.04819 2022-03-10T13:29:30Z Despite a recent resurgence of observational studies attempting to quantify the ice-induced attenuation of ocean waves in polar oceans, the physical processes governing this wave attenuation phenomenon are still poorly understood. Most analyses have attempted to relate the spatial rate of wave attenuation to wave frequency, but have not considered how this relationship depends on ice, wave and atmospheric conditions. An in-depth analysis of the wave-buoy data collected during the 2017 PIPERS programme in the Ross Sea is conducted. Standard techniques are used to estimate the spatial rate of wave attenuation $α$ and the influence of a number of potential physical drivers on its dependence on wave period $T$ is investigated. A power-law is shown to consistently describe the $α(T)$ relationship, in line with other recent analyses. The two parameters describing this relationship are found to depend significantly on sea ice concentration, mean wave period and wind direction, however. Looking at cross-correlations between these physical drivers, three regimes of ice-induced wave attenuation are identified, which characterise different ice, wave and wind conditions, and very possibly different processes causing this observed attenuation. This analysis suggests that parametrisations of ice-induced wave decay in spectral wave models should be piecewise, so their dependence on local ice, wave and wind conditions is described in some way. Article in Journal/Newspaper Ross Sea Sea ice DataCite Metadata Store (German National Library of Science and Technology) Ross Sea |
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topic |
Atmospheric and Oceanic Physics physics.ao-ph Geophysics physics.geo-ph FOS Physical sciences 86-11 |
spellingShingle |
Atmospheric and Oceanic Physics physics.ao-ph Geophysics physics.geo-ph FOS Physical sciences 86-11 Montiel, Fabien Kohout, Alison L. Roach, Lettie A. Physical drivers of ocean wave attenuation in the marginal ice zone |
topic_facet |
Atmospheric and Oceanic Physics physics.ao-ph Geophysics physics.geo-ph FOS Physical sciences 86-11 |
description |
Despite a recent resurgence of observational studies attempting to quantify the ice-induced attenuation of ocean waves in polar oceans, the physical processes governing this wave attenuation phenomenon are still poorly understood. Most analyses have attempted to relate the spatial rate of wave attenuation to wave frequency, but have not considered how this relationship depends on ice, wave and atmospheric conditions. An in-depth analysis of the wave-buoy data collected during the 2017 PIPERS programme in the Ross Sea is conducted. Standard techniques are used to estimate the spatial rate of wave attenuation $α$ and the influence of a number of potential physical drivers on its dependence on wave period $T$ is investigated. A power-law is shown to consistently describe the $α(T)$ relationship, in line with other recent analyses. The two parameters describing this relationship are found to depend significantly on sea ice concentration, mean wave period and wind direction, however. Looking at cross-correlations between these physical drivers, three regimes of ice-induced wave attenuation are identified, which characterise different ice, wave and wind conditions, and very possibly different processes causing this observed attenuation. This analysis suggests that parametrisations of ice-induced wave decay in spectral wave models should be piecewise, so their dependence on local ice, wave and wind conditions is described in some way. |
format |
Article in Journal/Newspaper |
author |
Montiel, Fabien Kohout, Alison L. Roach, Lettie A. |
author_facet |
Montiel, Fabien Kohout, Alison L. Roach, Lettie A. |
author_sort |
Montiel, Fabien |
title |
Physical drivers of ocean wave attenuation in the marginal ice zone |
title_short |
Physical drivers of ocean wave attenuation in the marginal ice zone |
title_full |
Physical drivers of ocean wave attenuation in the marginal ice zone |
title_fullStr |
Physical drivers of ocean wave attenuation in the marginal ice zone |
title_full_unstemmed |
Physical drivers of ocean wave attenuation in the marginal ice zone |
title_sort |
physical drivers of ocean wave attenuation in the marginal ice zone |
publisher |
arXiv |
publishDate |
2021 |
url |
https://dx.doi.org/10.48550/arxiv.2111.04819 https://arxiv.org/abs/2111.04819 |
geographic |
Ross Sea |
geographic_facet |
Ross Sea |
genre |
Ross Sea Sea ice |
genre_facet |
Ross Sea Sea ice |
op_rights |
arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
op_doi |
https://doi.org/10.48550/arxiv.2111.04819 |
_version_ |
1766179766003564544 |