RELATIONSHIP BETWEEN THE METEOR SHOWERS AND THE OCCURRENCE OF SPORADIC E OVER WUHAN

This paper analyzes the relationship between the occurrence of sporadic-E and the meteor numbers during the Perseids, Leonids and Geminids meteor showers in 2002 and Quadrantids meteor shower in 2003 over Wuhan （30°32′N, 114°22′E）. The data used here are derived from an all-sky meteor radar and a digital ionosonde at Wuhan. The results show that the meteor number increased during the outburst of meteor showers and that the occurrence frequency of strong Sporadic-E also increases after the outburst of meteor showers. There are two peaks for the mean Cross-correlation function between the meteor number and the occurrence rate of Sporadic-E, one appears around the second day after the outburst of meteor shower and the other appears around the sixth day. It is suggested that the first peak could correspond to the Sporadic-E produced divectely by many meteors ionization during the outburst of meteor shower, the second peak could correspond to the Sporadic-E produced by the subsequent action of wind shear on residual meteor ion concentrations.