吴淞零点
![吴淞零点](../cache/1335656.jpg)
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简要介绍长江河口地区吴淞零点的历史沿革,分析了长江河口地区水域平均海水面、理论深度基准面的空间变化,进而讨论长江河口地区的高程系统。
It briefly introduces the historical change of Wusong Datum in the Changjiang Estuary region , and analyzes the spatial variations of regional mean sea level and theoretical bathymetrical datum plane in this region . A discussion is also given to the height system of the Changjiang Estuary region .