泰安地磁台磁变仪基线值离散度减小的关键

• 作 者: 陈忠民
• 机 构: 泰安地磁台,
• 出 处: 地震地磁观测与研究
• 发表日期: 1986年04期
• 关键词: 磁变仪 基线值 均方误差 离散度 离散程度 观测误差 旋进 观测方法 台站观测 丝管

磁变仪基线值的离散程度,是衡量一个地磁台观测误差大小的一项判断依据。泰安台自测绘磁变仪基线值图以来,离散度一直较大,用地磁经纬仪CJ6/800—23(以下简称CJ6)测定D,算出的基线值D_B平均月均方误差一般在±0.3′左右;CJ6质子旋进式磁力仪(以下简称核旋仪)测定H,算出的基线值H_(B1)、H_(B2)平均月均方误差一般在±2.5nT左右(见表1、图1)。

Magnetron baseline dispersion of the value is a measure of a geomagnetic observational error of the size of a judge. Taian station since the mapping magnetometer baseline value map, the dispersion has been larger, with the magnetic theodolite CJ6 / 800-23 (hereinafter referred to as CJ6) Determination of D, the calculated baseline value of the average monthly mean deviation D_B is generally about ± 0.3 ’ ; CJ6 proton precession magnetometer (hereinafter referred to as the nuclear rotation instrument) for the determination of H, the calculated baseline values ​​H_ (B1), H_ (B2) average monthly mean square error is generally ± 2.5nT (see Table 1, Figure 1) .