VARIATIONS IN NONLINEARLY EVOLVED NEARSHORE SPECTRA AND THEIR SIGNIFICANCE IN THE ESTIMATION OF WAVE FORCES

Serdar Beji; Kazuo Nadaoka

doi:10.9753/icce.v26.%p

Núm. 26 (1998), Conference Proceedings

Núm. 26 (1998)

VARIATIONS IN NONLINEARLY EVOLVED NEARSHORE SPECTRA AND THEIR SIGNIFICANCE IN THE ESTIMATION OF WAVE FORCES

Conference Proceedings

Publicado 1998-01-29

Serdar Beji⁺⁻
Kazuo Nadaoka⁺⁻

Serdar Beji

Department of Naval Architecture and Ocean Engineering, Istanbul Technical University

Kazuo Nadaoka

Graduate School of Information Science and Engineering, Tokyo Institute of Technology

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Palabras clave

wave forces
force estimation
nonlinear waves
wave spectra
spectra variation

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VARIATIONS IN NONLINEARLY EVOLVED NEARSHORE SPECTRA AND THEIR SIGNIFICANCE IN THE ESTIMATION OF WAVE FORCES. (1998). Coastal Engineering Proceedings, 1(26). https://doi.org/10.9753/icce.v26.%p

Resumen

Variability of spectral estimates is examined with respect to the nonlinearity of the wave field considered. Both measured field data and numerical simulations are used for checking the extent of variations, which are quantified as histograms that closely follow the chi-square distribution. An absolute assessment of the variations over the entire frequency band of a spectrum is also made and found to approach to a mean of 70% regardless of the frequency concerned. Finally, it is observed that a nonlinearly evolving wave field of initially constant spectral shape gradually assumes a spectral variability, which is characterized by the chi-square distribution. The last finding provides a clue for a possible cause of the variations observed in the estimates of spectra.

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Authors retain copyright and grant the Proceedings right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this Proceedings.

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VARIATIONS IN NONLINEARLY EVOLVED NEARSHORE SPECTRA AND THEIR SIGNIFICANCE IN THE ESTIMATION OF WAVE FORCES

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