Influence of the solar wind dynamic pressure on the decay and injection of the ring current

【摘要】：正 The influence of the solar wind dynamic pressure on the decay and injection of the ring current isinvestigated empirically, based on the solar wind and the geomagnetic index Dst of the OMNI database, forthe period from January 1964 to July 2001. We found that when the position of the ring current is closer tothe Earth for a higher solar wind dynamic pressure, the decay time of the ring current decreases. The decay