华南沿海深水区不同重现期设计波浪的估算方法

THE ESTIMATIVE METHOD OF TYPHOON WAVE FOR DIFFERENT RETURN PERIODS IN THE COASTAL DEEP WATER ZONE OF SOUTH CHINA

根据华南沿海近３１年热带风暴及台风的天气图，分析统计出该海区不同纬度处台风中心气压、台风移动速度的长期概率分布。从这些概率分布曲线可得到不同重现期的设计台风，再用Ｂｒｅｔｓｃｈｎｅｉｄｅｒ１９７２年的半经验公式即可快速估算出不同纬度处的不同重现期的最大设计波浪及最大设计风速。该法效果良好，可供海洋工程可行性研究阶段参考使用。

According to the Typhoon Weather chart of 31 years in South China sea, the long term probability distribution of Typhoon center pressure and Typhoon center moving speed is analysed for different latitudes. From these distribution curves, we can obtain design Typhoon for different return periods. By using the Bretschneider's Method(1972),we can quickly calculate the design wave and wind speed for different return periods in different latitudes. This Method can be used for the feasibility study of offshore and coastal engneering.