摘要
讨论了由测高卫星升、降弧段海面高在交叉点上的约束监测海平面变化的方法 ;用TOPEX/POSIDON测高数据计算了中国黄海、东海、南海海域的海平面变化 ,其中黄海、东海海域受两个月周期分量的振荡信号影响 ,而南海海域以年周期变化为主要表现特征 ;分析了 3个海区海平面变化的相关性 ,扣除两个月的周期分量振荡信号后 ,其海平面变化的相关性达到 90 %以上 ;
The method of determining sea level variation over China seas is discussed by using TOPEX/POSIDON crossovers data. The sea level variations in the regions of China seas including the Yellow Sea,the East China Sea and the South China Sea are computed. The results show that oscillatory signals for two-month period are prominent in the Yellow Sea and the East China Sea, the annual period signals are basic characteristics in the South China Sea. The correlations among the sea level variations of the three China seas are analyzed. If the oscillatory signals for two-month period are deducted from the sea level variations, the correlations reach over 90%.It is found and analyzed that the sea water areas in the three regions with different latitude are different also,and thus it influences the sea level variations.
出处
《大地测量与地球动力学》
CSCD
2004年第2期106-109,共4页
Journal of Geodesy and Geodynamics
基金
国家自然科学基金项目 ( 40 2 740 0 2 )
关键词
海平面变化
卫星测高
中国近海
交叉点
sea level variation, satellite altimetry, China Seas, crossover,influence
