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本文论述了为研究近代中国沿海海面变化而建立统一基准的必要性。应用50年代至80年代全国25×10~4km精密水准复测资料和验潮站联测资料,建立了沿海陆地垂直运动均衡基准。通过对两个验潮站得到的海面变化所作的基准订正,和长江三角洲地区在此基准下的近代地壳垂直运动,说明统一的均衡基准在研究海面变化趋势中的意义。
This article discusses the necessity of establishing a uniform benchmark for the study of changes in the coastal waters of modern China. Applying the data of 25 × 10 ~ 4km precision leveling and the joint test of tide gauge stations from 1950s to 1980s, a benchmark for the vertical movement of coastal land was established. Based on the baseline revision of the sea surface changes obtained from the two tide gauges and the vertical movement of the modern crust in the Yangtze River Delta at this benchmark, the significance of a unified equilibrium benchmark in the study of the sea surface change trend is illustrated.