Influence of record length and sampling interval on ocean wave spectral estimates

M. Baba, C.M. Harish, N.P. Kurian


The influence of length of the record, sampling interval etc., on the ocean gravity wave spectral estimates is examined. A record of 512 sec. or more duration gives reasonably stable spectra. The sampling interval has to be as short as possible to get the best results. When sampling interval and lag value influence the spectral peakedness parameter, Qp, the significant wave height estimates are influenced by the record length only. The period corresponding to the highest peak of the spectrum is controlled by spectral resolution


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