In this paper, the observed land surface height data and tidal data in the Yellow River delta foreland area are used to describe the variations in depth datum and tidal level in the area.
通过黄河三角洲前沿陆地高程的变化和验潮获得的资料，介绍了黄河三角洲前沿深度基准面的变化和潮位变化情况。
Thee water level in deep well can reflect variant stress-strain variations which are caused by tidal dilatation, air-pressure, seismic waves and so. on.
深井水位能够反映地球固体潮体应变、气压变化、地震波等多种应力应变变化。
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