Revealing spatiotemporal evolution of eddy turbulence in the magnetospheric boundary layer with multi-spacecraft measurements

通过多航天器测量揭示磁层边界层涡流湍流的时空演化

• 批准号: 21740358
• 负责人: HASEGAWA Hiroshi
• 金额: $ 2.08万
• 依托单位: Japan Aerospace Exploration Agency
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21740358/
• 关键词: 地球惑星磁気圏; 宇宙プラズマ; ケルビン・ヘルムホルツ不安定; プラズマ輸送; 磁気圏界面; 低緯度境界層; 地球磁気圏; 朝夕非対称性; 電磁流体力学; 無衝突プラズマ; 磁気圏境界面; 非線形現象; グラッド・シャフラノフ法; データ解析手法; 磁気フラックスロープ; 電流層; 磁気リコネクション; ウェーブレット解析

The nature of eddy turbulence induced in Earth's magnetospheric boundary layer is examined by using data from multi-spacecraft measurements, with a view to revealing the mechanism by which collisionless solar wind plasma is transported into the magnetosphere. The methods have been established for identification from in situ measurements of Kelvin-Helmholtz vortices developed to the nonlinear phase, and new insights have been obtained regarding the excitation and nonlinear evolution of the vortices and their consequences. The vortices may not be the major player in the solar wind entry itself.

利用多航天器测量数据来研究地球磁层边界层引起的涡流湍流的性质，以揭示无碰撞太阳风等离子体传输到磁层的机制。已经建立了从开尔文-亥姆霍兹涡发展到非线性阶段的原位测量识别方法，并且对涡的激发和非线性演化及其后果获得了新的见解。漩涡可能不是太阳风入口本身的主要参与者。

项目成果

Magnetopause reconnection across wide local time

• DOI: 10.5194/angeo-29-1683-2011
• 发表时间: 2011-01-01
• 期刊: ANNALES GEOPHYSICAE
• 影响因子: 1.9
• 作者: Dunlop, M. W.;Zhang, Q. -H.;Carr, C.
• 通讯作者: Carr, C.