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Stabilization of the Kelvin‐Helmholtz instability by the transverse magnetic field in the Magnetosphere‐Ionosphere Coupling System
http://hdl.handle.net/2261/38127
http://hdl.handle.net/2261/3812776e616ce-b57d-421b-b291-5eac361f641c
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
GRL_023_007_00761.pdf (378.3 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2010-11-18 | |||||
| タイトル | ||||||
| タイトル | Stabilization of the Kelvin‐Helmholtz instability by the transverse magnetic field in the Magnetosphere‐Ionosphere Coupling System | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||
| タイプ | journal article | |||||
| 著者 |
Miura, Akira
× Miura, Akira |
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| 著者所属 | ||||||
| 著者所属 | Department of Earth and Planetary Physics, University of Tokyo | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | A sheared flow equilibrium in the magnetosphere‐ionosphere (M‐I) coupling system and its stability against the Kelvin‐Helmholtz (K‐H) instability are investigated within the ideal MHD by using a box‐shaped magnetospheric model. Without forcing, the unperturbed transverse (convection) electric field responsible for the E×B drift declines exponentially with time due to the ionospheric Joule dissipation and the decay (e‐folding) time is larger than one‐half of the Alfvén bounce period. The restoring force due to the line bending associated with the transverse magnetic field is responsible for the existence of a critical height‐integrated Pedersen conductivity ΣPc∼(µoVA)−1, where VA is the average Alfvén velocity along the field line, above which the K‐H instability in the magnetosphere is suppressed completely | |||||
| 書誌情報 |
Geophysical research letters 巻 23, 号 7, p. 761-764, 発行日 1996-04 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 00948276 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA00657102 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | info:doi/10.1029/96GL00598 | |||||
| 権利 | ||||||
| 権利情報 | copyright 1996 by the American Geophysical Union | |||||
| 日本十進分類法 | ||||||
| 主題Scheme | NDC | |||||
| 主題 | 450 | |||||
| 出版者 | ||||||
| 出版者 | American Geophysical Union | |||||
