1996年中国中西部地区高精度绝对重力观测结果

OBSERVATIONAL RESULTS OF HIGH PRECISION ABSOLUTE GRAVITY IN CENTRAL AND WESTERN CHINA IN 1996

1996年，中国科学院测量与地球物理研究所利用目前国际上最先进的FGS／112型绝对重力仪，在我国中西部地区的湖北、四川、云南和广西省开展绝对重力测量．给出了15个绝对重力点的最新观测结果，并与其他类型仪器在一些点上的观测结果进行了比较．结果表明，FGS／112绝对重力仪在15个点的观测结果的精度优于2．78×10－8m／s2．该仪器具有较好的稳定性和重复性，并与其他类型仪器没有明显的系统误差．

An absolute gravity field campaign was introduced. This campaign was carried out by institute of Geodesy and Geophysics, Chinese Academy of Sciences using the most advanced FG5/112 absolute gravimeter in Hubei, Sichuan, Yunan and Guangxi provinces of China in 1996. We report about the results of gravity measurements at 15 stahons. These results indicate that the observational accuracy is better than 2.78 ×10-8m/s2. The FG5/112 instrument has a higher level of stability, reliability and robustness. Those results were compared with former absolute determination. No significant discrepancies appear betWeen FG5/112 and other types of gravimeters.