前言在地磁观测中,标度值、基线值是衡量仪器工作状态的重要标志。其中标度值的稳定性除了与仪器的结构、性能、安装状况等有关外,还受温度、湿度、表头精度以及外界环境条件等的影响。这些影响在那些早期修建的未采取防潮措施的台站,往往是存在的。因此,必须采取相应措施加以克服,以保证仪器处于正常的工作状态。 Preface In geomagnetic observations, the scale value, the baseline value is an important indicator to measure the working condition of the instrument. In addition to the stability of the scale value of the instrument’s structure, performance, installation status, etc., but also by the temperature, humidity, header accuracy and the impact of external environmental conditions. These effects often exist at those stations that were built earlier without moisture protection measures. Therefore, we must take appropriate measures to be overcome in order to ensure that the instrument is in normal working condition.