2015 Fiscal Year Final Research Report
Magnetosphere-ionosphere-Earth coupling based on magnetic pulsations
| Project/Area Number |
25800277
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Space and upper atmospheric physics
|
|---|
| Research Institution | Kagoshima National College of Technology |
|---|
Principal Investigator |
Ikeda Akihiro 鹿児島工業高等専門学校, 一般教育科, 講師 (90582833)
|
|---|
| Project Period (FY) |
2013-04-01 – 2016-03-31
|
| Keywords | 磁気圏 / 電離圏 / 脈動 / 大気電場 / 太陽活動 |
|---|
| Outline of Final Research Achievements |
We focused on the magnetosphere-ionosphere- Earth (MIE) electromagnetically coupled system by using geomagnetic pulsations. We found scores of Pc 4 magnetic pulsations which show high correlation between the magnetosphere (geosynchronous orbit) and the ground. The phase relation of the high-correlation events was poorly characterized.
We further expanded regions of study and the atmospheric electric field, which is a part of the global circuit between the ionosphere and the ground, was included in our analysis. By comparing the atmospheric electric field and solar activities, we found that the solar activity and geomagnetic phenomena affect the atmospheric electric field. It implies the coupling of the magnetosphere, ionosphere, atmosphere and ground.
|
| Free Research Field |
超高層大気
|
