ダウンロード数: 74
このアイテムのファイル:
ファイル | 記述 | サイズ | フォーマット | |
---|---|---|---|---|
2019ja026998.pdf | 10.98 MB | Adobe PDF | 見る/開く |
完全メタデータレコード
DCフィールド | 値 | 言語 |
---|---|---|
dc.contributor.author | Ebihara, Yusuke | en |
dc.contributor.author | Lee, Lou‐Chuang | en |
dc.contributor.author | Tanaka, Takashi | en |
dc.contributor.alternative | 海老原, 祐輔 | ja |
dc.date.accessioned | 2022-02-02T00:36:26Z | - |
dc.date.available | 2022-02-02T00:36:26Z | - |
dc.date.issued | 2020-02 | - |
dc.identifier.uri | http://hdl.handle.net/2433/267743 | - |
dc.description.abstract | We investigated energy flow in the inner magnetosphere on the basis of the results obtained by a global magnetohydrodynamic simulation. When the magnetosphere is exposed to a southward interplanetary magnetic field, the magnetosphere undergoes quasi-steady convection. Downward (earthward) Poynting flux is found in the polar cap, which is consistent with previous observations. However, Poynting flux appears to be upward (antiearthward) in the equatorward region of the auroral oval. The Region 2 field-aligned current (FAC) is embedded in the upward Poynting flux region. The upward Poynting flux is closely associated with space charge deposited by the ionospheric Hall current under inhomogeneous ionospheric conductivity. The space charge gives rise to shear flow of plasma, which is transmitted upward to the magnetosphere. The shear flow generates additional Region 2 FAC, at least, in the low-altitude magnetosphere. Spatial distribution of the Region 2 FAC appears to depend on altitude, suggesting the significant influence of the ionosphere in the Region 2 FAC region. We traced integral curves of Poynting flux (S curves) backward from a magnetic field line in the Region 2 FAC region and found that the S curves originate either in the solar wind and in the earthward-most boundary of the simulation. These simulation results suggest that the ionosphere participates in the generation of the Region 2 FAC, and the ionosphere is a mediator to feed energy to the inner magnetosphere under the quasi-steady convection. | en |
dc.language.iso | eng | - |
dc.publisher | American Geophysical Union (AGU) | en |
dc.rights | ©2020. American Geophysical Union. All Rights Reserved. | en |
dc.rights | The full-text file will be made open to the public on 31 May 2021 in accordance with publisher's 'Terms and Conditions for Self-Archiving'. | en |
dc.subject | inner magnetosphere | en |
dc.subject | energy | en |
dc.subject | Region 2 field-aligned current | en |
dc.subject | MHD simulation | en |
dc.subject | convection | en |
dc.subject | magnetosphere-ionosphere coupling | en |
dc.title | Energy Flow in the Region 2 Field‐Aligned Current Region Under Quasi‐steady Convection | en |
dc.type | journal article | - |
dc.type.niitype | Journal Article | - |
dc.identifier.jtitle | Journal of Geophysical Research: Space Physics | en |
dc.identifier.volume | 125 | - |
dc.identifier.issue | 2 | - |
dc.relation.doi | 10.1029/2019ja026998 | - |
dc.textversion | publisher | - |
dc.identifier.artnum | e2019JA026998 | - |
dcterms.accessRights | open access | - |
datacite.date.available | 2021-05-31 | - |
datacite.awardNumber | 15H03732 | - |
datacite.awardNumber | 15H05815 | - |
datacite.awardNumber.uri | https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15H03732/ | - |
datacite.awardNumber.uri | https://kaken.nii.ac.jp/grant/KAKENHI-PLANNED-15H05815/ | - |
dc.identifier.pissn | 2169-9380 | - |
dc.identifier.eissn | 2169-9402 | - |
jpcoar.funderName | 日本学術振興会 | ja |
jpcoar.funderName | 日本学術振興会 | ja |
jpcoar.awardTitle | 非線形波動粒子相互作用・非拡散的粒子輸送に基づく地球放射線帯グローバル変動の研究 | ja |
jpcoar.awardTitle | 地球電磁気圏擾乱現象の発生機構の解明と予測 | ja |
出現コレクション: | 学術雑誌掲載論文等 |
![](/dspace/image/articlelinker.gif)
このリポジトリに保管されているアイテムはすべて著作権により保護されています。