地球弓激波前的低频磁流体波  

THE LOW FREQUENCY HYDROMAGNETIC WAVES IN FRONT OF THE EARTH'S BOW SHOCK

作　　者：杨少峰[1] 孙炜[1] 

机构地区：[1]中国科学院地球物理研究所

出　　处：《地球物理学报》1990年第2期239-241,共3页Chinese Journal of Geophysics

基　　金：国家自然科学基金

摘　　要：一、引言 在地球弓激波前存在着低频磁流体波。这种低频磁流体波是太阳风在地球弓激波上的反射粒子和太阳风粒子之间相互作用产生的。根据人造卫星的观测资料可以得到,在地球弓激波前。The low frequency hydromagnetic waves in front of the Earth's bow shock are generated by interaction between the solar wind and its reflected ions in the bow shock. According to the electromagnetic ion beam instability, the relationship between the low frequency hydro-magnetic waves and the interplanetary magnetic field are studied theorectically. The formulae are obtained for both resonant mode and non resonant mode respectively. Our results show that the low frequency hydromagnetic waves in front of bow shock is the source of low latitude Pc3 pulsations.

关 键 词：地球 弓激波 低频 磁流体波 太阳风 

分 类 号：P353[天文地球—空间物理学]