Stochastic dynamical analyses for monthly mean sea level along the coast of China
Tian Hui ,1 Chen Zongyong1 1. Ocean University of Qingdao. Qingdao 266003
By using method of maxinum entropy spectrum , this paper analyses monthly mean sea level (MMSL) of 15 stations along the coast of China during the period of 1971 ～ 1995 and finds out that the main oscilations in these stations are one year and half year oscilalions , and the main low frequency period is 18. 6 a in northern China, but 9 a or so in southern China. Then, the range of MMSL raising rate of (1. 07 ± 0. 83) mm/a along the coast of China is given by the method of stochastic dynamical prediction, in the mean time, it is pointed out that the estimation of raising rate by using this method is affected by the length of MM- SL sequences and the low frequency periods. Finally , the contour plot of MMSL anomality along the coast of China during the study period is given , and it can be seen that the El Nino event mainly affect. MMSL of southern China.