九十年代英仙座强流星雨爆发期间的Es层

The Es Layer during the Outburst of the StrongPerseid Meteor Shower in the Nineties

利用1891～1996年英仙座流星雨的百余年资料，1957～1997年中国满洲里等7个电离层站和1991～1996年日本国分寺电离层站Es层观测结果，研究了九十年代英仙座强流星雨爆发期间，中日两国垂测站网fbEs参数反常变化情况，不仅与母彗星（cometP／Swift－Tuttle）回归，同期目视流星观测，六十年代狮子座强流星雨和八十年代天龙座强流星雨的爆发作了比较，而且还对中纬区f、1和c型Es层的流星维持机制作了进一步讨论。

In this paper, anomalous variations of fbEs parameter at the & ionospheric stations of China and Japan are studied by using the simultaneous observational data of the Perseid meteor shower from 1891 ~1996 and the E. layer at the 7 ionospheric stations from 1957~1997 and at Kokubunji from 1991~ 1996 during the outburst of the strong Perseid meteor shower in the nineties. These ionospheric stations consist of the following & stations of China and Japan:Hainan(20. 00°, 106. 42°E);Guangzhou (23. 15°N, 113. 35°E ); Chongqing (29. 5°'N, 106. 42°E ); Lanzhou (36. 07°N, 103. 87°E);Beijing (40. 00°N, 1 16. 30°E) ; Changchun (43. 83°N, 125. 27°E ); Manzhouli (49. 58°N, 1 17. 45°E ) and Kokubunji (35. 71°N, 139. 49°E). Not only comparing the results with the return of comet SwiftTuttle, parent comet of the Perseid meteor shower, and simultaneous observational data of the visual meteors and the outburst of the strong Leonid meteor shower in the sixties and the strong Giacobinid meteor shower in the eighties, but the meteor keeping mechanism of the sporadic Es-f, Es-1 and Es-c layer at midlatitude were also discussed briefly in this paper.