Solar Wind Driven Magnetospheric-Ionospheric Complex Dynamics Model

太阳风驱动的磁层-电离层复杂动力学模型

• 批准号: 0229863
• 负责人: Wendell Horton
• 金额: --
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-04-01 至 2007-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0229863&HistoricalAwards=false
• 关键词: Solar; Wind; Driven; Magnetospheric; Ionospheric

This project will extend the WINDMI model of magnetospheric substorms. A new, spatially-resolved nonlinear dynamics model of the coupled magnetosphere-ionosphere system will be developed. That coupled system is driven by inputs from the solar wind. The model is derived from Maxwell's equations and nonlinear plasma dynamics. It has numerous feedback and feed-forward loops that provide a low-dimensional dynamic system that can capture most of the important physical processes that lead to substorms. The method of treating the magnetosphere-ionosphere system as a low-dimensional, nonlinear dynamical system is very different from, but complementary to, the global scale simulations that are being done by a number of other research groups. The project will examine the differences in the power flow and energy releases that give rise to different types of substorms and intensifications. Because the model can be driven by information on the state of the solar wind that can be obtained either from observations at the L1 point or from solar observations in conjunction with solar-wind modeling, the model has predictive capabilities that are useful for space weather forecasting.

该项目将扩展磁层亚暴的WINDIGE模型。 将建立一个新的磁层-电离层耦合系统的空间分辨非线性动力学模型。 这个耦合系统由太阳风的输入驱动。 该模型是从麦克斯韦方程组和非线性等离子体动力学导出的。 它有许多反馈和前馈回路，提供了一个低维的动力学系统，可以捕获导致亚暴的大多数重要物理过程。 将磁层-电离层系统视为低维非线性动力系统的方法与其他一些研究小组正在进行的全球尺度模拟非常不同，但却是互补的。 该项目将研究引起不同类型亚暴和增强的能量流和能量释放的差异。 由于该模型可以由关于太阳风状态的信息驱动，而这些信息可以从L1点的观测中获得，也可以从结合太阳风建模的太阳观测中获得，因此该模型具有对空间天气预报有用的预测能力。