Wave power statistics for sea states based on wind statistics

Abstract

The paper addresses how the wave power for sea states can be assessed based on available wind statistics for an ocean area. Results using a simple analytical tool are exemplified for a Pierson-Moskowitz wave spectrum together with long-term wind statistics from one location in the Northern North Sea and from four locations in the North Atlantic. The present method should be useful for making preliminary assessment of wave power for sea states based on, for example, global wind statistics.

Estimation of wave power in shallow water using deep water wind and wave statistics

“…Thus, these data represent the same ocean area and partly the same period as the wind speed statistics from Johannessen et al 18 First, substitution of the Weibull parameters in equation (32) in equation (14) yields E H s ½ = 2:11m, which compared with E H s ½ = 1:89m based on the PM spectrum in section ''Application of a PM spectrum with mean wind speed statistics as input,'' is about 10% larger. Second, by using this value of H s in equations (30) and (31) together with the coefficients in equations (33) and (34), substitution in equations (12), (13), (15) and (16) where the m:v:61SD of the factor 0.189 is 0.130 to 0.248. It appears that there is agreement between the results from the wind statistics (with E H s ½ = 2:11m and equation (9)) and the wave statistics (with E H s ½ = 1:89m and Eq (21)).…”

“…One should notice that Ertekin and Xu 4 were the first to assess the wave power potential from observed wind statistics. Recently Myrhaug 15 demonstrated how the wave power for sea states can be assessed based on available wind statistics from a deep water location in the Northern North Sea.…”