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THE TEC VARIATIONS DURING SUDDEN MAGNETIC STORM IN WUHAN

Li Li-bin, Wu Zhen-hua, Wang Bing-kang   

  1. Wuhan Institute of Physcis, Academia Sinica, 430071
  • Received:1994-12-21 Revised:1900-01-01 Online:1996-04-24 Published:1996-04-24

Abstract: In this paper, 136 sets of Faraday rotation data obtained by observation of Japanese Geostationary satellite ETS--Ⅱ radio beacon during April 1980 to December 1990 at Wuhan are analysed to study the response of TEC to SC Geomagnetic storm. It was found that TEC generally enhances during geomagnetic storm. The behavior of △TEC shows much disparity from that observed at mid--and high--latitude. Another interesting fact was that if SC starts in daytime, △TEC will get maximum 36 hours later. Otherwise, no maximum of △TEC appears. This fact exists all the time regardless of sunspot number or season.

Key words: Filament ascending, HF Doppler, Total electron content