太阳峰年期间中低纬电离层扰动的观测研究

This project studied on the ionospheric disturbances during the maximum solar activity years. Several progresses have been made and it is found that (1)in the low latitude region Wuhan the large scale (2-4 hour period) ionospheric disturbances propagate in the southward or northward directions and change with seasons; (2) the occurrences of the sporadic E-layer change with solar activities and their correlations vary regularly with local time; (3)the occurrences of the high latitude sporadic E-layer are closely related with the random properties of the ionospheric electric fields; (4)sudden increment of total electron density in the ionosphere is closely related with the solar zenith; (5) the symmetries of the ionospheric storms around the equatorial anomaly ionospheric region change with season. The present achievements are important in the space weather studies.

实验上利用太阳峰年电离层观测数据，研究与太阳爆发和极区活动相关的中低纬电离层扰动（行扰），着重揭示扰动的传播特性，理论上通过分析真实大气中重力波的远距离导制传播模式，解释电离层扰动的实验观测结果。这项研究将加深对电离层中能量南北传输和耦合过程和电离层热层耦合过程的认识，在日地系统空间天气研究中具有重要学术意义。