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Observations of exponential wave attenuation in Antarctic sea ice during the PIPERS campaign
Citation
Kohout, AL and Smith, M and Roach, LA and Williams, G and Montiel, F and Williams, MJM, Observations of exponential wave attenuation in Antarctic sea ice during the PIPERS campaign, Annals of Glaciology, 61, (82) pp. 196-209. ISSN 0260-3055 (2020) [Refereed Article]
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Copyright Statement
Copyright 2020 the authors. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/
Abstract
Quantifying the rate of wave attenuation in sea ice is key to understanding trends in the Antarctic marginal ice zone extent. However, a paucity of observations of waves in sea ice limits progress on this front. We deployed 14 waves-in-ice observation systems (WIIOS) on Antarctic sea ice during the Polynyas, Ice Production, and seasonal Evolution in the Ross Sea expedition (PIPERS) in 2017. The WIIOS provide in situ measurement of surface wave characteristics. Two experiments were conducted, one while the ship was inbound and one outbound. The sea ice throughout the experiments generally consisted of pancake and young ice <0.5 m thick. The WIIOS survived a minimum of 4 d and a maximum of 6 weeks. Several large-wave events were captured, with the largest recorded significant wave height over 9 m. We find that the total wave energy measured by the WIIOS generally decays exponentially in the ice and the rate of decay depends on ice concentration.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | sea ice, sea-ice dynamics, sea-ice growth and decay |
| Research Division: | Earth Sciences |
| Research Group: | Oceanography |
| Research Field: | Physical oceanography |
| Objective Division: | Environmental Management |
| Objective Group: | Management of Antarctic and Southern Ocean environments |
| Objective Field: | Antarctic and Southern Ocean ice dynamics |
| UTAS Author: | Williams, G (Associate Professor Guy Williams) |
| ID Code: | 143547 |
| Year Published: | 2020 |
| Web of Science® Times Cited: | 8 |
| Deposited By: | Oceans and Cryosphere |
| Deposited On: | 2021-03-24 |
| Last Modified: | 2021-05-12 |
| Downloads: | 9 View Download Statistics |
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