in this paper the principle of gps underwater topographic survey without tide gauge is first introduced, then the methods of data collection and processing are discussed.
the rate of vertical land movement is obtained from gps data of two periods at 3 tide gauge stations. the height variety is calculated with the data.
采用我国3个沿海验潮站两期gps观测数据,计算了这些点位的地壳垂直运动速率。
the data observed at wusong and huangpu prak tide gauge stations are of a good corresponding relationship with the direct economic loss resulted from disastrous typhoon.
吴淞口、黄埔公园的潮位站数据与成灾台风直接经济损失对应性较好。
the prospect of this kind of tide gauge is addressed after making a comparison with other tide gauges in foreign countries.
最后,还就目前世界上使用的压力式验潮仪与该仪器作了简明的比较,提出了该仪器广泛的应用发展前景。
first, the defmation and status of height datums is introduced and some problems on the local height datums established by the mean sea level, which is defined by the tide gauge data, are discussed.