中文摘要：

通过理论模拟试算和地面实测结果解算表明：山体边缘的重力垂直梯度在80 cm和130 cm高度处存在较为明显的空间非线性变化,超过0.02×10^-8ms^-2/cm;空间非线性变化随高度变化呈增大趋势。因此在分别利用FG5与A10绝对重力仪建立重力基准时,由不同仪器测量高度引起的归算重力变化不可忽视。

英文摘要：

The results of simulation and ground measurements show that there is obvious non-linenar variation in vertical gradient of gravity from the ground surface to a height of 80 cm and 130 cm,the amount is more than0. 02 × 10^-8ms^- 2/ cm,and the variation of gradient increscent with the changes of elevation. Therefore,the difference caused by height has to be paid attention in gravity measuring with FG5 and A10 absolute gravitymeter