11 research outputs found
Abstracts of the 6th Annual Scientific Meeting of the Hong Kong Neurosurgical Society 4 December 1999
Equatorial TEC variations during the Geomagnetic Storm of July 15â17, 2000
This paper studies the Malaysian ionospheric response to
the major geomagnetic storm during July 15-17, 2000, using
nationwide network of GPS receivers. In this study we focus on the relative variations in TEC at Malaysia region with
respect to a quiet period. Results indicate that the relative variations in TEC are variable during the storm time rangingabout â20 to 25%. There were positive phase exceeds 25% TECenhancement during the main phase of the storm.However there is clearly negative phaseduring the recovery phase of the storm, whose change ratio exceeds â20% TEC depression