北太平洋の波浪統計データの利用と長期予測

概要

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The study discusses the influence on long-term predictions of the ship response by using Global Wave Statistics data with special emphasis given to its scatter diagram rounded by one thousandth (1/1000), which has been studied for the North Atlantic in the former paper. In order to compare with other wave data which are generally rounded by 0.01/1000, such as Walden's wave data for the North Atlantic and Watanabe's for the North Pacific, GWS standard scatter diagrams of significant wave height and zero-crossing wave period are also suggested to correct to a round number of 0.01/1000 by fitted with a model of the conditional log-normal distribution for zero-crossing wave period in the North Pacific. The statistical characteristics both corrected and not corrected wave data are calculated. A numerical example of the effect by using corrected and not corrected one for ship acceleration in the vertical direction is given. Based on the present and former comparison, it is shown again that the influence on long-term predictions of the ship response by using original GWS data (rounded by 1/1000) may be not neglected, and it is necessary to compare with the other ones when Global Wave Statistics wave data is used for the long-term predictions of the ship response.
社団法人日本船舶海洋工学会の論文
1995-09-04