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河、湖等地表水水位变化及与其有水力联系的地下水位变化,对附近重力台站的观测值带来不可忽视的影响。这项影响随着区域水文条件,河、湖岸的地貌特征及其与测站的相对位置的不同而异,应根据实际情况设计最佳计算模型,以排除这项影响。我国大多数重力台站没有地下水位的观测资料,为此我们选了水位观测资料较全、紧靠黄壁庄水库的黄壁庄重力台站,计算了自1972年到1980年间水库及地下水水位变化对重力观测值的影响量,以供参考。
The change of surface water level in rivers, lakes and other places and the change of groundwater level with its hydraulic connection will have an unignorable impact on the observation data of nearby gravity stations. The impact varies with regional hydrological conditions, landform features of rivers and lakeshore and its relative position with stations. The best calculation model should be designed according to the actual situation so as to eliminate this influence. For the most of gravity stations in our country, there is no observation data of groundwater level. For this reason, we selected more data of water level observation, close to the Huangbizhuang gravity station of Huangbizhuang Reservoir, calculated the change of reservoir and groundwater level between 1972 and 1980 The impact of gravity observations for reference.