极盖区等离子体云块所伴随的氧离子上行现象研究

Polar ionosphere is the one of the key region in the solar-terrestrial energy coupling processes. On the one hand, the various dynamic processes, produced by the solar wind-magnetosphere-ionosphere coupling, can directly project into polar ionsphere along the magnetic field lines and generate various irregularities in the polar ionosphere. The polar cap patch is most common. On the other hand, polar ionosphere have amount of upflow ions, which are the important complementary of magnetospheric particles, and affect or modulate the magnetospheric dynamic processes. however, it is still not clear how the polar ionosphere ionization patches relate to the O+ upflow. This project tries to study the O+ upflow associated with the polar cap patches, try to confirm that the polar cap patch is a very important source for O+ upflow, to analyze its acceleration mechanism and to discuss its upward trajectory, by coordinated the GPS TEC, SuperDARN and EISCAT observations, together with the DMSP/e-POP/SWARM/THEMIS/Cluster satellite observations and the relevant models of theory and simulations in the polar ionosphere. This will offer scientific basis for ionospheric modeling.

极区电离层是日地能量耦合过程中关键区域之一。一方面，太阳风-磁层相互作用引起的各类动力学过程也可直接映射到极区电离引起众多的不均匀体结构，其中等离子体块最为常见。另一方面，极区电离层存在大量的上行离子是磁层粒子的重要补充，并影响或者调制磁层动力学过程。然而, 极盖区等离子体云块与氧离子上行的关系和加速机制尚无定论。本项目拟利用极区电离层全域GPS TEC数据和SuperDARN对流数据及EISCAT雷达观测，结合DMSP/e-POP/SWARM等电离层卫星和THEMIS/Cluster等磁层卫星的实地监测，结合理论模型和数值模拟，深入研究极盖区等离子体云块所伴随的O+离子上行现象，证实等离子体云块是否是O+离子上行的源区，研究该离子上行的加速机制，探讨该离子上行的逃逸路径，为极区电离层建模提供科学依据。

极区电离层是日地能量耦合过程中关键区域之一。一方面，太阳风-磁层相互作用引起的各类动力学过程也可直接映射到极区电离引起众多的不均匀体结构，其中等离子体块最为常见。另一方面，极区电离层存在大量的上行离子是磁层粒子的重要补充，并影响或者调制磁层动力学过程。然而, 极盖区等离子体云块与氧离子上行的关系和加速机制尚无定论。本项目拟利用极区电离层全域GPS TEC数据和SuperDARN对流数据及EISCAT雷达观测，结合DMSP/e-POP/SWARM等电离层卫星和THEMIS/Cluster等磁层卫星的实地监测，结合理论模型和数值模拟，深入研究极盖区等离子体云块所伴随的O+离子上行现象，证实等离子体云块是否是O+离子上行的源区，研究该离子上行的加速机制，探讨该离子上行的逃逸路径，为极区电离层建模提供科学依据。