摘要
综合分析了三亚地区（磁纬７．０４°Ｎ）历年哨声观测资料．观测表明：①三亚哨声出现率与太阳活动基本是正相关，峰年前一年有小谷值，峰年则显著回升，与北京、合肥台站（磁纬分别为２８．９°Ｎ、２０．８°Ｎ）观测结果正好相反．②三亚哨声活动与磁暴无明显相关性．③三亚哨声色散值多在１０～１５ｓ１／２间，色散值与ｆ０Ｆ２呈正相关．
The synthetical reports of whistlers obtained during the years (1982-1990)at low latitude station (Sanya,geomag. lat.7.04°N)are presented in this paper, and it is found that:(1)the occurrence rate has a positive correlation with solar activity, and has a lower value in the year before solar maximum year. These results are contrary to those obtained at higher latitude stations(Beijing,geomag.lat.28. 9°N;Hefei,20. 8°N)where the occurrence rate has a small peak in the same year.(2)the occurrence rate has no obvious correlation with magnetic storm at Sanya area where about twothird whistler activity occur on the magnetic quiet-day.(3)the dispersion values of most of the whistlers observed are concentrated between 10s1/2 and 15s1/2,and has a positive correlation with f0F2.
关键词
太阳活动
磁暴
哨声观测
电离层
Sanya whistlers,occurrence rate of whistler,the path latitude,solar activity,magnetic storm
