摘要
利用武汉电离层观象台1985-1990年间的高频多普勒台阵观测资料，采用射线追踪方法，对观测到的电离层重力波扰动（TID）进行了定源研究，从统计上分析了扰动源的地理分布、季节变化以及与地磁活动的关系．结果表明，中国中部上空TID的激发源主要出现在春夏季的四川盆地和冬半年的山口地区．扰动的激发可能与青藏高原地形隆起对这两个地区的气象活动的影响有关．此外，有少部分尺度较大的扰动出现在冬半年，它们可能来自极区．
A ray talng method is applied to the TIDs observed at Wuhan Ionospher Observatory in the period of 1985-1990, the distribuhon of TIDs soum is acquired The seasonal chof of the sources distribution, and the reation between sources distribution and geomagnetic activity are further dianesed. The results irnply that, TIDs observed in summer are mainly come from Sichuan basin, in contrast, those observed in winter are chiefly come form Aliai and Hangai mount regions. The special borologica activities around Qnghai-Tibet Plateau may play important role in the TID exciting mechanisms. Besides, some TIDs that have reahvely larger scale are probably excited in auroral region.
出处
《地球物理学报》
SCIE
EI
CAS
CSCD
北大核心
1997年第2期164-169,共6页
Chinese Journal of Geophysics
基金
国家自然科学基金
