Chapter
Apr 26, 2012
Application of Nautical Radar to the Field Observation of Waves and Currents
Authors: Tomonao Kobayashi [email protected], Atsushi Kawai [email protected], Masayuki Koduka, and Takashi Yasuda [email protected]Author Affiliations
Publication: Ocean Wave Measurement and Analysis (2001)
Abstract
The X-band radar was applied to the field observation in the nearshore region. The ocean wave spectra, nearshore current distribution, fluctuations of breaking zone and swash zone, and movement of the local rainfall area were observed with the radar. The continuous images obtained with the radar were analyzed with a method based on the small amplitude wave theory, and the directional wave spectra and nearshore current distribution were estimated. The profile of the estimated wave spectra shows good agreement with that observed at the same time with a wave gage, provings the validity of the radar observation system. Fluctuations of the breaking zone and swash zone were found by using the difference of the microwave scattering intensity between free waves and bores. The radar monitored the individual runup waves, and sighted the breaking points and the top of the swash zone. The radar detected the microwave scattering with raindrops, and tracked the local rainfall area.
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Published In
Ocean Wave Measurement and Analysis (2001)
Pages: 76 - 85
Copyright
© 2002 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
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Affiliations
Assoc. Professor, Graduate Course of Environmental and Renewable Energy Systems, Gifu Univ., 1-1 Yanagido, Gifu 501-1193 Japan. E-mail: [email protected]
Assoc. Professor, Graduate Course of Environmental and Renewable Energy Systems, Gifu Univ., 1-1 Yanagido, Gifu 501-1193 Japan. Email: [email protected] and Penta-Ocean Construction Co., Japan and Professor, Graduate Course of Environmental and Renewable Energy Systems, Gifu Univ. E-mail: [email protected]
Masayuki Koduka
Penta-Ocean Construction Co., Japan
Professor, Graduate Course of Environmental and Renewable Energy Systems, Gifu Univ. E-mail: [email protected]
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