Abstract

The objective of this study is to find a possible solution for estimating the effect of climate change on sea states with focus on the fatigue assessment of floating structures. In this paper, two key issues are discussed. One is involved with data mining. It's recommended to make a seasonal and a directional analysis for both windsea and swell in order to improve the accuracy of predictions. With a database covering more than 34 years, seasonal wave height, period and direction of either wind sea or swell are all identified in this research. Another point is the methodology in evaluating the impact of climate change. Two widely-applied methods from literature are compared and a new wave-power methodology is proposed. The conclusion indicates that the best solution for a particular sea area is highly dependent on the geographic characteristics, seasons, variable (windsea or swell) and the dominant direction of waves.

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