Role of electromagnetic coupling between mid-latitude ionosphere and inner magnetosphere during geomagnetic disturbances.

地磁扰动期间中纬度电离层和内磁层之间电磁耦合的作用。

• 批准号: 22540461
• 负责人: HASHIMOTO Kumiko
• 金额: $ 2.41万
• 依托单位: Kibi International University (2011-2012)Kyushu University of Health and Welfare (2010)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22540461/
• 关键词: 磁気嵐; サブストーム; 磁気圏対流; 過遮蔽電場; 領域II型沿磁力線電流; 中緯度 電離圏; 対流電場; 赤道カウンタージェット電流; 領域2型沿磁力線電流; 領域1型沿磁力線電流

We showed that the overshielding electric field develops together with the convection electric field during the substorm expansion phase by using data from global magnetometer networks and SuperDARN radars. Based on the HF Doppler measurements, the overshielding electric field at mid latitude was found to be 2 mV/m, comparable tothe storm time convection electric field. Our results suggest that the overshielding electric field plays an important role in the geomagnetic and ionospheric disturbances at mid-equatorial latitudes and would contribute to the growth/decay of magnetospheric disturbances.

利用全球磁强计网络和SuperDARN雷达的数据，我们发现在亚暴扩展阶段，过屏蔽电场与对流电场一起发展。根据高频多普勒测量，中纬度地区的过屏蔽电场为2 mV/m，与风暴时的对流电场相当。结果表明，过屏蔽电场在中赤道地区的地磁扰动和电离层扰动中起着重要作用，并对磁层扰动的增长/衰减有贡献。

项目成果

Substorm convection and current system deduced from the global simulation

从全球模拟推导出的亚暴对流和洋流系统

• DOI: 10.1029/2009ja014676
• 发表时间: 2010
• 期刊: J. Geophys. Res
• 作者: Tanaka T.;A. Nakamizo;A. Yoshikawa;S. Fujita;H. Shinagawa;H. Shimazu;T. Kikuchi;K. Hashimoto
• 通讯作者: K. Hashimoto

Generation and transmission of electric currents in the magnetosphere Global ionospheric currents driven by the Region-2 field-aligned currents during substorms

磁层中电流的产生和传输 亚暴期间由区域 2 场对准电流驱动的全球电离层电流

• 发表时间: 2011
• 作者: T.Kikuchi;K.K.Hashimoto;Nagatsuma
• 通讯作者: Nagatsuma

Relation of substorm onset arc to large-scale field-aligned current distribution 2: Post-onset

亚暴爆发弧与大范围场一致电流分布的关系2：爆发后

• 发表时间: 2013
• 期刊: Journal of Geophysical Research
• 作者: Sugiura;Konosuke;杉浦幸之助;村田功,佐藤薫,冨川喜弘,野口克行,橋本優希;村田功,佐藤薫,冨川喜弘,岡野章一;村田功,佐藤薫,冨川喜弘,野口克行,橋本優希;村田功,佐藤薫,冨川喜弘,岡野章一;Y. Nishimura
• 通讯作者: Y. Nishimura

Electric field and currents associated with the Region-2 field- aligned currents at auroral-to- equatorial latitudes during substorms

亚暴期间极光至赤道纬度与 Region-2 场对准电流相关的电场和电流

• 发表时间: 2012
• 作者: T. Kikuchi;K. K. Hashimoto;Y.Nishimura;T. Tanaka;N. Nishitani;T. Nagatsuma
• 通讯作者: T. Nagatsuma

Substorm Currents in the Global Ionosphere as Deduced from Ground Magnetometers

从地面磁力计推断出的全球电离层中的亚暴流

• 发表时间: 2010
• 作者: T. Kikuchi;K. K. Hashimoto,T.Tanaka;S. Fujita
• 通讯作者: S. Fujita