摘要
本文利用中国东部沿120°E经度线附近纬度均匀分布的十个地磁台站地磁静日变化水平分量的资料和主分量分析法,给出了详尽的S_q(H)季节变化随纬度分布的剖面及S_q电离层等效电流体系视焦点纬度.分析表明,S_q(H)中Φ_z的变化,主要由于电离层中等效电流体系对称轴偏离地磁轴引起的.
A detailed north-south section around the meridian at 120°E of seasonal variation of Sq(H) for quiet days are presented using the data of ten geomagnetic observatories with nearly equal separation in latitudes between stations in eastern China,with the method of main component analysis. The apparent focus latitude of the equivalent current system in the ionosphere is presented. It is shown that the variation of for Sq(H) is resulted from the deviation of the axis of symmetry of the equivalent current system from the geomagnetic axis.
出处
《地震学报》
CSCD
北大核心
1990年第2期159-165,225,共7页
Acta Seismologica Sinica
基金
地震科学联合基金
