The Statistical Characteristics of Wave Height Data Measured by an Altimeter Loaded on the Satellite, GEOSAT

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This paper describes the characteristics of the wave height measured by an altimeter on the satellite, GEOSAT. At first, comparison for checking the accuracy of GEOSAT data is made with Ocean Wave Charts and Coastal Wave Observation offered by the Japan Meteorological Agency (JMA) .The effects of temporal and spatial differences on the GEOSAT data are discussed. The accuracy of them in the coastal area where sea state is much dependent on location is checked. It is found that the GEOSAT gives wave data in reasonably good agreement with sea truth data in the coast as well. Next, the wave height distributions made from them are compared with existing ones to examine availability of the altimeter data for getting the global wave statistics. Lastly long term prediction of the wave load on a ship are tried to examine how difference of the wave height distribution affects the predicted load. It is found that the difference in wave height distribution results in difference in long term prediction of ship response.
独立行政法人海上技術安全研究所の論文
1997-07-09