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Short-term statistics of waves measured off Ratnagiri,eastern Arabian Sea
Institution:1. Centre for Marine Technology and Ocean Engineering (CENTEC), Instituto Superior Técnico, University of Lisbon, Portugal;2. Dipartimento di Fisica, Universitá di Torino, Via P. Giuria 1, 10125 Torino, Italy;3. Centre for Ocean Engineering Science and Technology, Swinburne University of Technology, P.O. Box 218, Hawthorn, Victoria 3122, Australia;1. State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China;2. Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration (CISSE), Shanghai 200240, PR China;3. School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China;1. Natural Ocean Engineering Laboratory (NOEL), “Mediterranea” University of Reggio Calabria, Loc. Feo di Vito, 89122 Reggio Calabria, Italy;2. Department of Civil Engineering & Engineering Mechanics, Columbia University, New York, NY 10027, USA;1. CERI, University of Memphis, Memphis, TN, USA;2. Geodynamics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore 560 064, India;1. Instituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas 152, Gustavo A. Madero, México, DF, Mexico;2. Centro de Investigación en Matemáticas, Jalisco s/n, Mineral de Valenciana, Guanajuato, Guanajuato, Mexico;3. Instituto Politécnico Nacional, Unidad Profesional Zacatenco, SEPI-ESIME, Ingeniería de Sistemas, Av. Instituto Politécnico Nacional, Gustavo A. Madero, México, DF, Mexico
Abstract:The short-term wave characteristics are required for design and operation of industrial facilities within the coastal areas. Water surface displacement measured using waverider buoy moored at 13 m water depth in the eastern Arabian Sea off the west coast of India have been analyzed to study the short-term statistics of waves covering full one year period. The study indicates that the values of the observed maximum wave height as a function of duration are not consistent with the theoretical expected value. There is significant variation (1.29–2.19) in the ratio between highest 1% wave and significant wave height compared to the theoretical value of 1.67. The data recorded at 13 m water depth indicates that the significant wave height is ∼8% lower than that predicted by the conventional Rayleigh distribution. The theoretical bivariate log-normal distribution represents the joint distributions of wave heights and periods for the study area.
Keywords:Ocean science  Significant wave height  Wave statistics  Rayleigh distribution
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