重庆与兰州电离层Es出现率的比较研究  

COMPARISON AND INVESTIGATION OF Es OCCURRENCE OF THE IONOSPHERE OVER CHONGQING AND LANZHOU

作　　者：谭辉[1] 

机构地区：[1]中国科学院武汉物理与数学研究所,430071

出　　处：《空间科学学报》2000年第4期373-379,共7页Chinese Journal of Space Science

基　　金：国家自然科学基金资助课题!(49974039)

摘　　要：对重庆（２９．５°Ｎ， １０６．６°Ｅ）与兰州（３６°Ｎ， １０３．９°Ｅ）ｆ０Ｅｓ＞５ＭＨｚ的 Ｅｓ出现率和 Ｅ层 临界频率 ｆ０Ｅ进行了详细对比研究．结果表明：（１）此两地 Ｅｓ出现率的变化特征显著．白 天重庆高于兰州；晚上则正相反．（２）出现率的这种变化与 Ｅｓ环境电离密度的变化趋势十 分一致．（３）上述特征的形成，除了此两地纬度上的差异外，与兰州地处地磁Ｓｑ电流系的 焦点很有关系．In this paper, Es occurrence and f0E over Chongqing (29.5°N, 106.6°E) and Lanzhou (36°N, 103.9°E) are compared and studied. The results show that: (1) Change pattern of Es occurrence over these two stations has certain rules. During the daytime, Es occurrence over Chongqing is higher than that over Lanzhou, but at night the result is just the opposite. (2) Change of Es occurrence is consistent to that of the ambient ionization density. (3) Besides the difference of latitude of the two stations, it seems that the mechanism of the above characteristic is closely related to the Sq current systems.

关 键 词：电离层 E层 Es出现率 Sq电流系 重庆 兰州 f0E 

分 类 号：P352[天文地球—空间物理学]