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http://dx.doi.org/10.7837/kosomes.2022.28.5.700

Analysis of Extreme Wave Conditions for Long-Term Wave Observation Data Considering Directionality  

Kim, Gunwoo (Department of Ocean Civil Engineering, Mokpo National Maritime University)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.28, no.5, 2022 , pp. 700-711 More about this Journal
Abstract
In this study, deepwater design waves were estimated for 16 wave directions and various return periods based on statistical analysis of extreme waves observed for more than 20 years at three stations (Chilbal-do, Geomun-do, Donghae). These values were compared with design waves estimated based on the omni-directional wave data. The Weibull distribution was used as the probability distribution function whose parameters were determined by the least square method. The Kolmogorov-Smirnov test was applied for the goodness of fit test. Notably, the directional design waves were smaller than the omni-directional design wave for every wave direction. The maximum 50-year wave heights for directional sectors were 7.46 m (NNE), 12.05 m (S), and 9,59 m (SSW) at Chilbal-do, Geomun-do and Donghae whereas those for uni-directional wave data were 7.91 m, 13.82 m and 10.38 m, respectively. This implied possible under-estimation of the deepwater design waves for 16 wave directions being currently used in the design of offshore and coastal structures.
Keywords
Design wave; Extreme value analysis; Directionality; Weibull distribution; Long-term wave observation data;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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