Energy transport in the auroral ionosphere and magnetosphere

极光电离层和磁层的能量传输

• 批准号: 8286-2008
• 负责人: Samson, John
• 金额: $ 1.47万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2010
• 资助国家: 加拿大
• 起止时间: 2010-01-01 至 2011-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=450266
• 关键词: Energy; transport; auroral; ionosphere; magnetosphere

The flow of the solar wind around the Earth's magnetosphere leads to the storage of energy in the hot ionized gas or plasma and the magnetic fields surrounding the Earth. This plasma regime starts about 100 km above the Earth in the ionosphere and extends many tens of Earth radii into space. The region dominated by Earth's magnetic field is called the magnetosphere. Auroral displays are one of the examples of the release of this stored energy into the upper regions of the Earth's atmosphere and ionosphere. The research program focuses on two auroral phenomena, the auroral arc and the auroral or magnetic substorm. Projects in the program include experimental, theoretical, and computational studies of the energy transport in these space plasmas, with major thrusts in three directions, including the sources of ultralow frequency (ULF, 1-10 mHz, 100-1000 s period) shear Alfven, field line resonances (FLRs), the physics of FLRs and auroral arcs, and the physics of substorms in the magnetosphere and ionosphere.

地球磁层周围太阳风的流动导致能量储存在热电离气体或等离子体和地球周围的磁场中。这种等离子体状态始于距地球100公里的电离层，并向太空延伸几十个地球半径。受地球磁场支配的区域称为磁层。极光现象是将这种储存的能量释放到地球大气层和电离层的上层区域的一个例子。该研究计划集中于两种极光现象，即极光弧和极光或磁亚暴。项目包括空间等离子体能量输运的实验、理论和计算研究，主要研究方向为三个方向，包括超低频（ULF, 1-10 mHz， 100-1000 s周期）剪切阿尔芬源、场线共振（FLRs）、FLRs和极光弧的物理特性以及磁层和电离层亚暴的物理特性。