影响地球环境的太阳质子事件的时间过程

利用1966年以来的大量太阳耀斑以及相应质子事件的资料，分析研究了质子事件到达时间和极大时间同耀斑经度位置的统计关系．结果表明当耀斑位置处于经过地球的行星际大尺度场磁力线足点位置附近时，上述两种时间过程最短．这个结果支持了太阳耀斑粒子经日冕传播再向行星际空间传播的二阶段传播模型．

THE TEMPORAL PROCESSES OF THE SOLAR PROTON EVENTS AFFECTIG THE EARTH ENVIRONMENT

The statistical relations between the arrival time, maximum time of proton events and the flare-associated longitudinal position are studied in detail by using data of solar flares and proton events from 1966 through 1992. It is concluded that the above two time processes are the shortest when solar flares are at longitudinal positions which are the footpoints of the large-scale interplanetary magnet field lines connecting with the earth. The result supports the two-stage diffusion model, which asserts that the solar flare protons propagate in the interplanetary space following the coronal transport.