| 1. | Auroras are most commonly visible at high latitudes . they are associated with geomagnetic activity brought about by solar wind
极光通常在高纬度的地区出现，它们与太阳风引致的地磁活动有关。 |
| 2. | The main contents of the chapter 2 is the research work on the relationship between the coronal hole and the recurrent geomagnetic strom
在冕洞的成熟期，太阳风高速流的最大速度和对地磁活动的平均影响程度基本维持在稳定的水平上。 |
| 3. | I will introduce the part work of my workmates and me about the geomagnetic activities aspect in the safety period of " shenzhou no . 5 " in this paper ? 2
本文在第二章中介绍了作者与中心其他同志在“神舟5号”安全期预报中地磁活动预报方面的部分工作。 |
| 4. | The year of 2003 is in the declining phase of cyler 23 and the frequency of the solar - eruption is low , so the recurrent geomagnetic strom is dominant in all the geomagnetic activities
由于2003年处于太阳活动下降年，太阳爆发活动频次减小，地磁活动主要以重现型地磁暴占主导。 |
| 5. | They are associated with geomagnetic activity brought about by solar wind . auroras occur as a result of charged particles ( mostly electrons ) from the sun colliding with gas particles in the earth s atmosphere , producing a glow in different colours
极光通常在高纬度的地区出现，它们与太阳风引致的地磁活动有关。当来自太阳的带电荷粒子（主要是电子）与地球大气层的空气粒子碰撞，产生不同颜色的光，这便是极光。 |
| 6. | More recently , david hathaway , a solar physicist at the marshall space flight center nasa and his colleagues predict the peak of solar activity will take place around the middle of the year 2000 . their prediction is based on the recent sunspot number and geomagnetic activity
最近，美国太空总署马歇尔飞行中心的太阳物理学家大伟哈法威及其同事根据太阳黑子的数目和地磁活动，预测太阳活动在2000年中会到达高峰期。 |
| 7. | Characteristics of variation and disturbances in low - latitude ionosphere were investigated based on the data observed in hainan under different magnetic activities and solar activities including variations and disturbances of parameters in different ionospheric layers , behaviors of plasma drift and a comparison with other low - latitude ionospheric station . the disturbance propagations from high to low latitude region during magnetic storm time are also investigated with analyzing the data obtained from the east - asian high - middle latitude stations
本文在观测数据分析的基础上研究了不同地磁活动和太阳活动条件下低纬电离层的变化和扰动特性，包括海南电离层各分层的参数变化和扰动特性，电离层漂移的变化特性，并与低纬度地区其他台站进行了对比分析，还对暴时东亚地区高中纬度地区台站的观测资料进行了分析，研究了电离层扰动从高纬到低纬的响应过程。 |
