论文部分内容阅读
利用Imp-8,Geotail和Goes-6等卫星资料,研究了1994年2月21日0900UT到达地球磁层的行星际激波引起的磁暴期间,从太阳风向磁层传输能量的有关问题.结果指出:（1）南向行星际磁场（IMF）的长持续时间不是太阳风向磁层输能的必要条件.南北振荡的,较强IMF也能产生显著的能量传输;（2）行星际扰动磁场通过弓激波和磁层顶后扰动磁能增加,增幅将近5倍;（3）在磁层内扰动磁场的Bz分量在1×10-4Hz附近显著被吸收.这一低频扰动磁场可能是磁暴期间导致氧离子和质子等环电流粒子向内扩散并被加速的原因之一.
Based on the satellite data of Imp-8, Geotail and Goes-6, the issue of energy transfer from the solar wind to the magnetosphere during the magnetic storm caused by the interplanetary shock reaching the Earth's magnetosphere at 0900UT on February 21, 1994 was studied. : (1) The long duration of the southward interplanetary magnetic field (IMF) is not a necessary condition for the solar wind to transport energy into the magnetosphere, and the stronger IMF from the north-south oscillation can produce significant energy transfer. (2) The inter- (3) The Bz component of the perturbed magnetic field in the magnetic layer is significantly absorbed near 1 × 10-4Hz, which may be the result of magnetic field disturbance during the magnetic storm One of the reasons that ring current particles such as oxygen ions and protons diffuse inward and accelerate.