Elucidation of Magnetospheric Magnetic Topology Bifurcation by Numerical Simulations
Project/Area Number |
22840032
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Research Category |
Grant-in-Aid for Research Activity Start-up
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Allocation Type | Single-year Grants |
Research Field |
Space and upper atmospheric physics
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Research Institution | Kyushu University |
Principal Investigator |
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Project Period (FY) |
2010 – 2011
|
Project Status |
Completed (Fiscal Year 2011)
|
Budget Amount *help |
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2011: ¥1,495,000 (Direct Cost: ¥1,150,000、Indirect Cost: ¥345,000)
Fiscal Year 2010: ¥1,625,000 (Direct Cost: ¥1,250,000、Indirect Cost: ¥375,000)
|
Keywords | 磁場トポロジー / 地球磁気圏 / 磁気圏対流 / 交換型滋力線再結合 / 交換型磁力線再結合 |
Research Abstract |
We investigated the solar wind-magnetosphere interaction using numerical magnetohydrodynamic simulation and examined the magnetic flux circulation(plasma convection) from a point of view of magnetic topology. We found a new magnetic flux circulation mode operating that is different from the one previously expected. The circulation mode is driven by magnetic re connection between open and closed geomagnetic field lines. There are various appearance patterns depending on the directions of the interplanetary magnetic field and the Earth' s dipole axis. Ionospheric convection patters reported in the past are successfully explained by this new idea of magnetic flux circulation.
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Report
(3 results)
Research Products
(30 results)