东亚沿岸近期相对海平面的升降趋势

根据东亚沿岸４５个水位观测站的长序列水位资料，用不同的计算区域平均海平面升降的方法，估计了该区海平面升降趋势。结果表明，从本世纪５０年代初至９０年代初，整个海区平均而言海平面呈上升趋势。海平面升降的区域性变化较大：中国沿岸除山东半岛外，其他海区平均是上升的，在日本群岛南部和朝鲜半岛南部沿岸，由几种方法得出的结果多数是上升的，但上升幅度很小。本文对东亚沿岸海平面升降的估计结果与Ｂａｒｎｅｔｔ的相应估计差别较大，其主要原因是Ｂａｒｎｅｔｔ选站较少，且选的站集中在该区南北两端，中间部分无资料；估计方法虽有影响，但属次要的。

THE RISING TREND OF RECENT RELATIVE SEA LEVEL ALONG THE COASTS OF EAST ASIA

The rising or falling trend of the sea level along the coasts of East Asia is estimated by different computational methods based on the sea level data of long time series collected from 45 tide gauge stations there.The results show that the relative sea level,on the average,is rising along the entire coast of East Asia from the early 1950s to the early 1990s.The regional change of sea level rise or fall.is greater.The sea level along the coast of China,except for Shandong Peninsula, is rising;the sea level along the coasts of the southern Japanese Islands and southern Korean Peninsula estimated by several methods is mostly rising,but rising rate is very small.The difference between the results estimated in this study and the corresponding results by Barnett along the coast of East Asia is significant.This is mainly because the number of the stations selected by Barnett is relatively small and the selected stations are concentrated at the southern and northern ends of the region, without data for the middle of the region.The effects of the estimating methods are minor.