Making of the Intelligent Calculation System for Physical Parameters of Oceanic Internal Waves

For obtaining the physical parameters of oceanic internal waves from MODIS remote sensing images, the intelligent calculation system had been developed based on Multimedia ToolBook. The intelligent calculation system was made according to the characteristics of light stripes and dark stripes in oceanic internal waves. The physical parameters such as the wavelength, the travelling direction, and their uncertainties had been calculated semi-automatically. There were four steps. The first one was that the MODIS remote sensing images would be corrected based on the geographic location of Taiwan Island and the ratio of South-North and East-West of the Dongsha Islands. The second one was that the zones of the oceanic internal waves could be obtained by Photoshop. The third one was that a series of the straight line segments in the crests of the oceanic internal waves could be drawn by Visio system. The finally step was that the wavelength, the travelling direction, and their uncertainties had been calculated by the intelligent calculation system developed in this paper. The conclusion shown that the most wavelengths were in 0.8~2.5 km, the travelling direction was in north by west 35~85°, and the maximum crest length of the oceanic internal waves in the North-East of Dongsha Islands was 250 km.