Study of Equatorial ULF and Electrojet
Grant-in-Aid International Scientific Research
|Allocation Type||Single-year Grants|
|Research Institution||Kyushu University|
KITAMURA Tai-ichi Kyushu University, Faculty of Science, Professor, 理学部, 教授 (40037239)
STUART W. F. British Geological Survey, Director, 部長
FRASER B. J. University of New Castle, Associate Professor, 助教授
TRIVEDI N. B. Institute of Space Science of Brazil, Director, 部長
WATANABE Tomiya University of British Columbia, Professor, 教授
SHIMOIZUMI Masashi Kitakyushu Polytechnic College, Lecturer, 講師
ITONAGA Masahiro Kyushu University, Faculty of Technology, Lecturer, 工学部, 講師 (60213104)
SAKA Ousuke Kyushu University, Faculty of Science, Associate Professor, 理学部, 助教授 (80108638)
|Project Period (FY)
1989 – 1990
Completed(Fiscal Year 1990)
|Budget Amount *help
¥8,600,000 (Direct Cost : ¥8,600,000)
Fiscal Year 1990 : ¥4,500,000 (Direct Cost : ¥4,500,000)
Fiscal Year 1989 : ¥4,100,000 (Direct Cost : ¥4,100,000)
|Keywords||Equatorial electrojet / Equatorial geomagnetic pulsation / Magnetometer network / Magnetospheric ULF|
Observations aimed to the investigations on 2-dimensional structure of equatorial electrojet and also on propagation of magnetospheric ULF waves in the equatorial region were executed from Oct. 1990 to Mar. 1991. These observations covered five countries with cooperation of academic organizations which were Brazilian Institute of Space Science in Brazil, Cameroonian Geological Survey in Cameroon, British Geological Survey in U. K., University of New Castle in Australia and University of British Columbia in Canada.
Five of sixteen magnetometers were set up across geomagnetic equator in Brazil in order to examine the detail of North-South structure of equatorial electrojet, and two in Cameroon and three in Pacific Ocean (Palau, Yap and Guam) examining its East-West structure. At the same time, other magnetometers were set up in middle latitude regions, where were U. K., Australia, Canada and Japan to investigate the global propagation of magnetospheric ULF waves.
The present investigations thus covered a half of the equator longitudinally and also covered lower and middle latitude regions. The present network observation in such large equatorial region has never been tried so far in the world, and will contribute to revelation of the behavior of equatorial electrojet and also to explain the propagation of the magnetospheric ULF waves in the equatorial region. The data are now under processing.
Research Output (11results)