摘要
本文用遍布全球的52个电离层垂测台站资料,研究1958年7月8日磁暴期间全球电离层扰动的发展变化;各扇区的响应特性;扰动的传播轨迹及速度等。获得以下结果:1.几大扇区的电离层扰动始于南北两极,美洲扇区除具这一特征外,其赤道地区在磁暴急始后不久,出现一个扰动中心,邻近区域的扰动受其控制。2.扰动由高纬向低纬发展,由扰动中心向外传播。3.扰动峰面几乎与地磁力线垂直,即扰动沿磁力线方向发展,其传播速度大约在150—600m/s范围。
In this paper, using the data of 52 ionosonde stations distributed in the world, the developments of the ionospheric disturbance during the magnetic storm on July 8, 1958 and the propagation direction and velocity of this disturbance are inrestegated. The following conclusions are obtained.1. The ionospheric disturbance for each sector started from polar regions. Besides this characteristics, after the beginning of the magnetic storm, there is a disturbance center in the equator area of American sector. The disturbance in the nearbgy regions are controlled by it.2. The disturbance developed from high latitude to low latitude.3. The frontal surface of the disturbance is almost perpendicular to geomagnetic field lines. It means the disturbance propagates along magnetic lines. The propagation velocity for the disturbance is between 150 and 600 m/s.
出处
《空间科学学报》
CAS
CSCD
北大核心
1993年第3期224-230,共7页
Chinese Journal of Space Science
基金
国家自然科学基金
关键词
磁暴
电离层响应
扰动峰面
Magnetic storm, Ionospheric disturbances
