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融多颗卫星数据、地面重力值和其它资料一起的地球重力模型EGM 96 ,为研究中国大陆的重力场及相关问题提供了一个高精度 36 0阶的球谐系数。在分析EGM 96的基础上 ,计算并简单解释了中国大陆的自由空气异常和布格重力异常。计算所得重力场的精度和分辨率大大高于常用的1∶140 0 0 0 0 0自由空气异常图及布格重力图
The earth gravity model EGM 96, which combines multi-satellite data, surface gravimetric values and other data, provides a high-precision 36 0 -order spherical harmonic coefficient for studying the gravitational field and related issues in mainland China. Based on the analysis of EGM 96, free air anomalies and Bouguer gravity anomalies in mainland China were calculated and briefly explained. The accuracy and resolution of the calculated gravitational field are much higher than the commonly used 1: 14000000 free air anomaly and Bouguer gravity map