期刊
OCEAN DYNAMICS
卷 64, 期 7, 页码 989-998出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s10236-014-0724-7
关键词
Remote sensing; Nautical radar; High-resolution waves; High-resolution current fields; Shallow water bathymetry
类别
资金
- ONR [N00101411WX20493]
- NIWA under the Coasts and Ocean Research Program
- EU [DOLPHIN SPA. 2010.1.1-05]
In this paper, high-resolution wave, current and water depth fields derived by marine X-Band radar are presented for a coastal region of extreme tidal currents in the presence of inhomogeneous bathymetry at the south coast of New Zealand's North Island. The current and water depth information for the presented location covers an area of approximately 13 km(2) with a spatial resolution of 225 m and an update rate of 3 min. The sea state data provides a spatial representation of coastal effects like wave shoaling and refraction forced by bathymetry and current interaction. The near-surface current measurements about 3 km off the coast show expected tidal current pattern with maximum northwest/southeast current of 1.5-2 m/s alongshore. This is in agreement with currents from the RiCOM hydrodynamic model. The spatial resolution of the observed current field exhibits in addition small-scale current features caused by the influence of the local bathymetry. These data demonstrate the insight to be gained in complex, high-energy coastal situations through the use of high-resolution remote sensing techniques.
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