摘要
利用珠江口大万山站潮位资料,横栏岛风资料和磨刀门、横门水道咸潮观测资料,采用对比和相关分析等方法,分析2009年秋季珠江口咸潮与潮位、风场变化的关系,1984～2009年秋、冬月份海平面长期变化趋势。结果表明:咸潮的发生均对应着高海面期且风向偏东,而低潮位时期且偏北风有利于补水。月平均海平面变化方面,珠江口与南海呈准同步变化。大万山站1984～2009年9、11和12月的海平面上升率高达5～6mm/月。2009年9、10月的海平面为近30年来的最高值年,11月为第3高值年。
Tidal level data of Dawanshan gauge station（21 °56＇N, 113°43＇E） as well as the daily data of prevailing wind direction and mean speed of Waglan Island （22°11 ＇N, 114° 18＇E） , together with daily saltwater tide data from Xinhe sluice in Modao gate and Xiaoyin sluice in Hengmen are used to study the relationships between severe saline water intrusion and change of wind at Pearl river mouth in autumn of 2009. The mean monthly sea level is emphatically analyzed, particularly during au- tumn and winter. The results show that ： Salinity intrusion tends to occur with high sea level and easterly wind, while low sea lev- el and northerly wind do help to water supplement ; the sea level at the Pearl river mouth shows quasi - synchronous with that of south China sea and rises in Dawanshan at a rate of 5 -6 mm per month during 1984 -2009, among which, monthly sea level of September and October in 2009 is the highest, and that of November 2009 is the third highest.
出处
《广东气象》
2010年第2期11-13,共3页
Guangdong Meteorology
关键词
海洋气象学
潮位变化
强咸潮
珠江口
marine meteorology
tide had changed
strong salt tide
Pearl River mouth
