MISC

1991年

Profiles of Electron Density in the Lower Ionosphere Observed by the MU Radar.

J. Geomag. Geoelectr
  • ZHANG X‐J
  • ,
  • RUAN X‐Q
  • ,
  • SATO T
  • ,
  • KIMURA I
  • ,
  • FUKAO S
  • ,
  • KATO S

43
3
開始ページ
179
終了ページ
187
記述言語
英語
掲載種別
DOI
10.5636/jgg.43.179
出版者・発行元
Society of Geomagnetism and Earth, Planetary and Space Sciences

The middle and upper atmosphere radar of Japan is a 46.5MHz, monostatic pulse-Doppler radar with an active phased-array antenna which consists of 475 crossed Yagis. Since 1983, observations of irregularities in the troposphere, stratosphere, mesosphere, and ionospheric F-region have been conducted. Here we will show that the MU radar can be used to get the electron densities of the ionospheric E-region of 90 to 160km height as well. Preliminary results are presented. We compared variations of electron density at different heights for a normal day on September 22, 1987 and for a partial eclipse on September 23, 1987. For the partial eclipse day, the electron densities in the whole E-region began to decrease at around 1030 JST. The duration was about 3 hours, and the decrease of electron density was about 20% relative to a normal day. These results showed that electron densities directly reflect the variation of the solar UV flux.

リンク情報
DOI
https://doi.org/10.5636/jgg.43.179
CiNii Articles
http://ci.nii.ac.jp/naid/80005793757
URL
https://jlc.jst.go.jp/DN/JALC/00008351616?from=CiNii
ID情報
  • DOI : 10.5636/jgg.43.179
  • ISSN : 0022-1392
  • CiNii Articles ID : 80005793757

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