Quasi-Steady Magnetotail Reconnection

准稳态磁尾重联

• 批准号: 0004365
• 负责人: Thomas Sotirelis
• 金额: $ 13万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-09-01 至 2005-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0004365&HistoricalAwards=false
• 关键词: Quasi; Steady; Magnetotail; Reconnection

The investigators will study the role played by quasi-steady magnetotail reconnection in magnetospheric dynamics. Time-of-flight effects can produce distinctive particle signatures during reconnection, when plasma is introduced onto previously unpopulated field lines. Such indications of reconnection in the magnetotail are seen as velocity dispersed ion structures in data obtained by the Defense Meteorological Satellite Program satellites in low Earth orbit. There are three goals to the study. The first goal is to learn what controls quasi-steady reconnection in the magnetotail. The second goal is to examine the magnetosphere-ionosphere coupling associated with velocity dispersed ion structures by characterizing their association with field-aligned currents. The third goal is to ascertain any correlation with bursty bulk flows in the magnetotail. The study will lead to a better understanding of how plasma enters the magnetosphere and how the entry process is manifested in ionospheric signatures.

调查人员将研究准稳定磁尾重联在磁层动力学中所起的作用。 当等离子体被引入到先前未被填充的场线上时，飞行时间效应可以在重连期间产生独特的粒子特征。 磁尾重连的这种迹象被认为是低地球轨道上国防气象卫星计划卫星获得的数据中的速度分散离子结构。 这项研究有三个目标。 第一个目标是了解是什么控制着磁尾的准稳态重联。 第二个目标是研究磁层电离层耦合与速度分散离子结构的特征与场向电流。 第三个目标是确定与磁尾中突发整体流动的任何相关性。 这项研究将有助于更好地了解等离子体如何进入磁层以及进入过程如何体现在电离层特征中。