摘要
利用中国地震局“十五”数字化地磁观测台网资料，分析了中国地区水平磁场静日变化场Sq（H）的时空分布特征，得出以下结论：Sq焦点的空间运行轨迹为：春秋季大致沿泉州贵阳一西昌一拉萨一狮泉河这样一个略倾斜于地磁赤道的条带运动，冬季倾斜条带北移约5°～10°；Sq（H）变幅由南北两侧向焦点方向递减；此外，相对于春秋季而言，冬季Sq焦点到达时间明显滞后，在中国境内的空间运行时间明显缩短。
The dependence of Sq（H） on space and time is analyzed based on the data recorded by the geomagnetic observatories all over the China. The result shows that the center of Sq（H） goes along the line from Quanzhou, Guiyang, Xichang and Lasa to Shiquanhe in equinox, and moves 5-10 degrees northward in winter. The amplitude of Sq（H） becomes smaller and smaller when it is nearer and nearer to the Sq center. It is also found that the arrival time of Sq（H） center in equinox is earlier than that in winter, and it also takes longer time to reach it.
出处
《地震地磁观测与研究》
2009年第1期44-50,共7页
Seismological and Geomagnetic Observation and Research
基金
基金项目：地震行业科研专项,地磁场动态分布计算200708043
高玉芬老师就本研究提出了许多宝贵意见,在此表示衷心感谢!
