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为研究陕西地区地磁短周期变化特征，１９９６年９月从陕西南部石泉至甘肃宁县布设临时测线一条，在测线上进行地磁短周期变化三分量同步观测．在３ｍｉｎ至２ｈ周期范围内，统计计算了各测点各周期成分的地磁垂直转换函数、水平转换函数及谱成分关系．在数据处理中参考应用了随机数据理论，取得了较好效果．分析指出，该区地磁短周期变化受武功、乾陵之间地下近东西向异常感应电流集中的区域性影响及测点附近局部感应电流影响．其主要分布特征为，垂直分量变化在武功和乾陵之间存在一反向轴，频率响应显示出转换函数在周期约２０ｍｉｎ时有最大值．
In order to study the characteristics of short-period changes of geomagnetic field in Shaanxi Province, in September 1996, a temporary survey line was laid from Shiquan in southern Shaanxi to Ningxian in Gansu. Simultaneous observation of three components of short-period change in geomagnetic survey was conducted on the survey line. In the range of 3min to 2h, the geomagnetic vertical transfer function, the horizontal transfer function and the spectral composition of each period of each measuring point are calculated and calculated. In the data processing, the theory of random data is applied and achieved good results. The analysis shows that the short-period variation of geomagnetic field in this area is affected by the regional influence of the near east-west anomalous induced current concentration in the underground and the local induced current in the vicinity of the measuring point. The main distribution characteristics of the vertical component change between the martial arts and Qianling there is a reverse axis, the frequency response shows that the transfer function in the cycle of about 20min maximum.