Statistical Analysis And Application Of Wind Field And Sea Wave Field In South China Sea

China is now the world's largest user of coal,and also has the highest greenhouse gas emissions associated with the mining and use of coal.Under today's enormous pressures of the growing shortage of conventional energy sources and the need for emission reductions,the search for clean energy is the most effective strategy to address the energy crisis and global warming.Compared with wind and solar technology,wave power generation technology is at least a dozen years behind,but it offers unique advantages.The wave power density(WPD)is high,4-30 times that of wind energy.Compared with solar energy,wave energy is not seriously affected by the weather.Although as wind grow bigger waves catch more wind,and driving them faster and with more energy.Wave energy is believed to be a very large,renewable,environmentally friendly energy source and hence it is currently one of the sources most sought after by developed countriesIn this paper,wave field in the South China Sea from August 1988 to July 2011 was simulated by the third-generation wave model WAVEWATCH-?(WW3)with wind input of CCMP(Cross-Calibrated Multi-Platform)wind field.The characteristics of wave climate in the South China Sea was analyzed.We also analyzed the wave energy resources in the South China Sea.The main results are as follows.(1)The annual average wave power density in the SCS reaches its maximum value of 18 kW/m in the area between Dongsha and the Luzon Strait,peaking in winter at 27 kW/m.Examining the seasonal factors,the wave power density in the SCS is slightly lower in summer and spring and higher in autumn and winter,but basically above 2 kW/m in all seasons.The stability of the wave power density in the southern and northern regions of the SCS exhibits significant differences.The stability of the power density is better in the northern area and the Cv is small,basically less than 5%.In the southern SCS,particularly in the high-wind-speed area to the southeast of the Indo-China peninsula,the power density is less stable because of the impact of Annam on the winter and summer monsoons.Here,the Cv is large,reaching 7%or above.(2)The sea surface winds of the entire South China Sea in spring showed a trend of increasing trend,the areas in summer and winter increased slightly,and the area in summer increased the least.Southern Taiwan Strait,northern South China Sea,North Bay,Gulf of Thailand,northwestern Kalimantan Island,western and northern Luzon have shown significant growth in all seasons.(3)The mesoscale terrain have an important influence on the summer wind field and winter wind field distribution in the SCS.And the SCS Wave power density distribution and stability closely related to the mesoscale terrain.(4)Because energy research is closely associated with information about geographic locations,GIS technology has major prospects for application in this field.The GIS database provided accurate and efficient information,which could be used by researchers in wave energy and the decision-makers about resource development.The GIS spatial analysis technique can help the optimization of the path of the Sea-skimming aircraft.