Articles | Volume 21, issue 1
https://doi.org/10.5194/npg-21-325-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/npg-21-325-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
One-dimensional modelling of upper ocean mixing by turbulence due to wave orbital motion
M. Ghantous
Swinburne University of Technology, Hawthorn, Victoria, Australia
A. V. Babanin
Swinburne University of Technology, Hawthorn, Victoria, Australia
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Satellite altimetry shows that daily mean significant wave heights (SWHs) and extreme SWHs have increased in the Southern Ocean, the South Atlantic, and the southern Indian Ocean over the last 2 decades. In winter in the North Atlantic, SWH has increased north of 45°N and decreased south of 45°N. SWHs likely to be exceeded every 100 years have also increased in the North Atlantic and the eastern tropical Pacific. However, this study also revealed the need for longer and more consistent series.
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Seawater temperature has a major impact on human comfort and safety during swimming, surfing and snorkeling activities and the marine ecosystems. The authors deployed marine buoys to collect meteo-oceanographic data for the government and found the temperature always dropped significantly after typhoon passages. Presentation of the dataset gives a first understanding and can help to validate the numerical model in order to study the mechanism.
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Preprint withdrawn
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Using in situ measurements, we have obtained improved insights into infragravity (IG) wave heights' correlation with the wind waves, which are the forcing of IG waves. We have derived the qualitative directionality of IG wave field, also using in situ observations, and the qualitative physics were verified utilising an IG wave model.
IG wave directionality has not had much attention in the past, but the results show that directional characteristics should be considered to study this wave.
P. C. Liu, R. Bouchard, W. E. Rogers, A. V. Babanin, and D. W. Wang
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There was a recent freaque wave encounter near Scituate, Massachusetts by a local transport ferry en route from Provincetown to Boston. The encounter resulted in minimal damages, fortunately, and provided us a chance to examine a possible connection between the freaque wave occurrence and the ambient wind field, since the place of encounter was in the vicinity of a NOAA NDBC buoy where wind and wave data were recorded. in this paper we present a brief analysis.