Abstract: Relative sea level change can be derived from tide records. In order to study the general sea level change along the coast of China,it is necessary to make a unified reduction for all the results obtained from various tide stations. A so-called isostatic datum of vertical movement of thecoastal land hasbeen suggested as a basis of the unified reduction in this paper,established by useof precise releveling data completed between 50’s and 80’s.The vertical movement velocities relative to the datum at the bench marks of 15 tide stations have been calculated. These velocities provide a base for the reduction.

Key words: sea level change, Isostatic datum, Leveling

摘要： 验潮得到的是相对于验潮水准点的海面变化。为了研究整个中国沿海的海面变化,必须对各验潮站得到的结果进行统一的归算。本文提出采用沿海陆地地壳垂直运动的均衡基准,作为归算的依据,并利用五十至八十年代的精密水准复测资料建立了这一基准,求得了十五个验潮站的验潮水准点相对于该基准的垂直运动速率,为统一归算提供了依据。

关键词: 海面变化, 均衡基准, 水准测量