局部地区布格重力异常的计算

REDUCTION OF GRAVITY DATA IN REGION AREA

概括了空间重力异常和布格重力异常的计算方法,计算了中安第斯山局部地区的空间重力异常、地形改正和布格重力异常,发现了其在海拔较高地区多为负值。

We summed up methods of calculation of free-air gravity anomaly and Bouguer gravity anomaly, and calculated these two gravity anomaly with terrain correction in Central Andes arear. Bouguer gravity anomaly in area of higher orthometric height is often negative and similar to contours map of same area. Terrain correction is much less than free-air and Bouguer gravity anomaly, so it need not to be considered in the simple Bouguer gravity anomaly.