DYNAMICS AND DIMENSIONS OF SHORT-PERIOD METEOROID STREAMS - INTERRELATIONS BETWEEN METEOR-SHOWERS

At the early stage of evolution, meteoroid streams may be considered as elliptical rings of relatively small thickness. The influence of planetary perturbations can essentially increase the stream width and its thickness. As a result, one stream may produce several couples of meteor showers active in different seasons of the year. The 22 short-period meteoroid streams under review may theoretically produce 102 meteor showers. The existence of 72 showers is confirmed by photographic and radar observations.