Chapter
Dec 31, 2015
Method for Estimating Directional Wave Spectrum in Incident and Reflected Wave Field
Authors: Masahiko Isobe and Kosuke KondoAuthor Affiliations
Publication: Coastal Engineering 1984
Abstract
The relationship between the directional spectrum and the cross-power spectra in an incident and reflected wave field differs from the situation with no reflected waves because the phase lag between the incident and reflected waves is not random. Extra terms, which may be called phase interaction terms, exist. Hence standard methods for estimating the directional spectrum are not applicable. In the present study, the MLM is modified for this situation and the method is termed the MMLM (Modified Maximum Likelihood Method).
The validity of the MMLM is examined by numerical simulation. The results indicate that the MMLM has a high resolution power. Formulas to determine the reflection coefficient are derived and their accuracy and suitability are examined.
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Published In
Coastal Engineering 1984
Pages: 467 - 483
Copyright
© 1985 American Society of Civil Engineers.
History
Published online: Dec 31, 2015
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Masahiko Isobe
Associate Professor, Department of Civil Engineering, Yokohama National University, 156 Tokiwadai, Hodogaya-ku, Yokohama, 240 Japan
Kosuke Kondo
Principal Engineer, Design and Engineering Department, Penta-Ocean Construction Co., Ltd., 2-2-8 Koraku, Bunkyo-ku, Tokyo, 112 Japan
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.