Energetic Particles in the Inner Magnetosphere

该项目的目标是创建一个全面的内部磁层模型，其中包括等离子体层、环电流和辐射带的相互作用。该模型将是对综合环流模型(CRCM)和辐射带环境(RBE)模型的改进。耦合模型将包括粒子加速的过程、损失和传输过程，并将包括对电场和磁场的自洽描述。该项目将研究内部磁层如何对太阳风驱动因素做出动态响应，以及对外部驱动因素的响应如何受到内部过程的调制。具体的问题是：(1)电磁离子回旋波与粒子降水造成的环流离子损失有什么关系；(2)径向输运、波粒相互作用和感应电场对地磁风暴不同阶段辐射带内相对论电子通量变化的作用是什么；(3)是什么决定了内外辐射带之间的缝隙区域有时部分、有时完全充满。理解太阳风驱动力之间的相互作用，环流与辐射带之间的相互作用对我们理解空间天气有重要影响。包括对天基技术系统的辐射危害和对地面的地磁效应。

The goal of this project is to create a comprehensive model of the inner magnetosphere that includes the interactions of the plasmasphere, the ring current and the radiation belts. The model will be an enhancement of the Comprehensive Ring Current Model (CRCM) and the Radiation Belt Environment (RBE) model. The coupled model will include the processes by which particles are accelerated, the loss and transport processes and will include a self-consistent description of the electric and magnetic fields.The project will examine how the inner magnetosphere responds dynamically to the solar wind drivers and how the response to the external drivers is modulated by internal processes. Specific questions that will be addressed are: (1) what is the relationship between EMIC (electromagnetic ion-cyclotron)waves and the loss of ring current ions via particle precipitation, (2) what are the roles of radial transport, wave-particle interactions, and induced electric fields on the variations in relativistic electron fluxes in the radiation belt during different phases of geomagnetic storms, and (3) what determines the sometimes partial, sometimes complete filling of the slot region between the inner and outer radiation belts.Understanding the interactions between the solar wind drivers, the ring current and the radiation belts has important impacts on our understanding of space weather, including radiation hazards to space-based technological systems and geomagnetic effects on the ground.