论文部分内容阅读
本文利用我国部分台站地磁垂直分量日变幅的资料,采用局部地区日变场的分析方法,研究了地磁垂直分量日变幅在中国地区的空间分布特征.结果表明,在局部地区地磁日变场的研究中,考虑经度影响是必要的,本文所用方法是适宜的;结果还表明,垂直分量日变幅的空间分布呈现出明显的季节变化、逐月变化及逐日变化性.若粗略地把磁静日垂直分量日变幅极大值所处的纬度视为 S_q 高空电流体系的焦点所对应的纬度,则此焦点纬度夏季最高,冬季最低,春秋季居中,并显出明显的逐月及逐日变化性,在相邻的两个静日,焦点纬度的变化可达几度.
Based on the diurnal variation of the geomagnetic vertical component of some stations in our country, the paper analyzes the daily variation of the geomagnetic vertical component in China by using the analysis method of the daily variation of the local area. The results show that in the geomagnetic diurnal variation In the field research, it is necessary to consider the influence of longitude, and the method used in this paper is suitable. The results also show that the spatial distribution of daily amplitude of vertical component shows obvious seasonal variation, monthly variation and daily variation. The latitude at which daily maximum amplitude of magnetic daily vertical component is located is regarded as the latitude corresponding to the focal point of S_q altitude current system. The focal latitude is highest in summer, lowest in winter and middle in spring and autumn, Daily changes in the two adjacent static days, the focus of changes in latitude up to several degrees.