对我国地磁核旋定点观测资料质量评定的方法探讨

ON QUALITATIVE CRITERION OF THE PROTON PRECESSION MAGNETOMETER DATA IN CHINA

本文以地磁场时空变化的规律性为物理依据,以最小二乘法为数学工具,对我国1990年10月—1991年6月103个定点核旋观测每日北京时21点绝对值F_(21)、Z_(21)、H_(21),以及部分台站的基线值F_B、Z_B、H_B进行了考察,并提出利用区域台间地磁数据的空间线性相关和对基线值进行多项式拟合两种方法进行方差分析,以及用标准偏差作为判断观测数据质量的标准。

On the basis of the regularity of geomagnetic temporal-spatial variation, theproton precession magnetometer data from October, 1990 to June, 1991 at BeijingTime 21: 00 F_(21), Z_(21) and H_(21) at 130 stations in China, as well as the base-linevalues F_B, Z_B and H_B at some stations are investigated with least square me-thod. The application of variance analysis to the space linear correlation of localstation geomagnetic data and to the polynomial fitting of base-lithe values isadopted in the paper. The results show that the standard deviation obtained inboth cases can be regarded as the qualitative criterion of the observational data.