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Wave energy estimation by using a statistical analysis and wave buoy data near the southern Caspian Sea

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Abstract

Statistical analysis was done on simultaneous wave and wind using data recorded by discus-shape wave buoy. The area is located in the southern Caspian Sea near the Anzali Port. Recorded wave data were obtained through directional spectrum wave analysis. Recorded wind direction and wind speed were obtained through the related time series as well. For 12-month measurements (May 25 2007–2008), statistical calculations were done to specify the value of nonlinear auto-correlation of wave and wind using the probability distribution function of wave characteristics and statistical analysis in various time periods. The paper also presents and analyzes the amount of wave energy for the area mentioned on the basis of available database. Analyses showed a suitable comparison between the amounts of wave energy in different seasons. As a result, the best period for the largest amount of wave energy was known. Results showed that in the research period, the mean wave and wind auto correlation were about three hours. Among the probability distribution functions, i.e Weibull, Normal, Lognormal and Rayleigh, “Weibull” had the best consistency with experimental distribution function shown in different diagrams for each season. Results also showed that the mean wave energy in the research period was about 49.88 kW/m and the maximum density of wave energy was found in February and March, 2010.

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Correspondence to M. A. Badri.

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Zamani, A.R., Badri, M.A. Wave energy estimation by using a statistical analysis and wave buoy data near the southern Caspian Sea. China Ocean Eng 29, 275–286 (2015). https://doi.org/10.1007/s13344-015-0019-x

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  • DOI: https://doi.org/10.1007/s13344-015-0019-x

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