中文摘要：

针对目前世界范围内实测重力梯度数据匮乏的现状，文章在原有通过地形制备重力梯度基准图的方法之上，引入了目前两种主流地壳均衡模型：普拉特模型、艾里模型，旨在进一步完善重力梯度基准图的制备.因为充分考虑了地壳密度及厚度的不均匀，所以使得制图更加精确.由于缺乏实测重力梯度数据，因此文章决定通过与实测重力数据比对来验证方法的可行性.实验表明，引入地壳均衡模型制备的重力图与实测数据更加一致，其中，引入普拉特模型后的制图精度要比引入艾里模型的高；另外通过比对实验地区的地壳厚度可知，若在已知地形数据的前提下，通过比较引入普拉特模型制备的局部地区重力异常图与实测重力图，可初步快速准确的估计出该地区的平均地壳厚度.

英文摘要：

For the lack of actual measured gravity gradient data all over the world, on the base of the method of modeling gravity gradient reference map through terrain data, this paper introduces two mainstream isostasy models——Pratt model and Airy model to improve the accuracy of the gravity gradient reference map under the condition of taking full account of the factors. As the lack of measured gravity gradient data, measured gravity data are used to verify the feasibility of method. The experiments show that the gravity map modeled by the introduction of isostasy models are more consistent with the actual measured data, while the result by introducing the Pratt model is better than the Airy model makes. Besides, if we know the region＇s terrain data and gravity data, we can estimate the average crustal thickness by comparing the gravity anomaly map made by the Pratt model with the actual gravity data.