ANALYSIS OF STORMY WAVE FIELDS AROUND RIVER MOUTH OBSERVED BY X-BAND RADAR
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- LUO Zhiyuan
- 筑波大学大学院 システム情報工学研究群
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- TAKEWAKA Satoshi
- 筑波大学教授 システム情報系
Bibliographic Information
- Other Title
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- Xバンドレーダにより観測された河口周辺の荒天時波浪場の解析
Abstract
<p> We measured the wave field around the mouth of Oii River, Yoshida City, Shizuoka Prefecture, with an X-band radar during stormy condition. Fourier transform is applied to the sequence of images, and the phase distribution map of the wave field is processed from the result. From this map, we determined the local wave lengths and directions, which depict the refraction process of the waves approaching the shore. We finally estimated the depth distribution of the area using the linear dispersion relationship with the wave length and frequency of the Fourier transform. The validity of the depth estimation is verified with survey results, which showed reasonable agreement. The proposed method in this study is more flexible than other methods, which use fast Fourier transform (FFT) regarding the choice of data length and frequency.</p>
Journal
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- Japanese Journal of JSCE
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Japanese Journal of JSCE 79 (18), n/a-, 2023
Japan Society of Civil Engineers
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Details 詳細情報について
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- CRID
- 1390860620060539904
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- ISSN
- 24366021
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
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- Abstract License Flag
- Disallowed