Statistical Analysis and Configuration Classification of the Magnetic Fields of the Active Prominences on the Solar Limb During Cycle 21

In the present paper,the synthetically statistical analysis and configuration of classification of the magnetic fields are made for 79 Hα active prominences which were observed from January in 1979 to August in 1982 during Cycle 21.The results show:(1) A11 the loop prominences and surges produce X-ray bursts,But the X-ray bursts from,the surges are more than those from the prominences,and the X-ray bursts produced from the active prominences are more intensive than those from the limb flares.(2) Most of the velocities of matter of the active prominences are between ±lOOkm/sec.(3) The ascending height of the,matter of.the active prominences is generally below R_⊙/l0.(4) Most active prominences are spatially distributed between l0°arid 20°of the carrington heliographic latitudes,and near 340°and 110° of the Carrington heligraphic longitudes and(5) The active prominences produced by the preceding sunspots are more than those produced by other sunspots.Some ideas of the classification of the configuration of the magnetic fields of prominences are also presented.