Storm time response of GPS-derived total electron content (TEC) during low solar active period at Indian low latitude station Varanasi

被引：28
|
作者：
Kumar, Sanjay [1 ]
Singh, A. K. [1 ]
机构：
[1] Banaras Hindu Univ, Dept Phys, Atmospher Res Lab, Varanasi 221005, Uttar Pradesh, India
来源：
ASTROPHYSICS AND SPACE SCIENCE | 2011年 / 331卷 / 02期
关键词：
Global positioning system; Ionospheric total electron contents; Geomagnetic storm; MAGNETICALLY DISTURBED CONDITIONS; GEOMAGNETIC STORM; LONGITUDE; 120-DEGREES-E; IONOSPHERIC RESPONSE; BRAZILIAN SECTOR; NOVEMBER; 2003; JANUARY; 10; EQUATORIAL; FIELDS; PENETRATION;
D O I：
10.1007/s10509-010-0459-y
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The present paper analyzes the dual frequency signals from GPS satellites recorded at Varanasi (Geographic latitude 25A degrees, 16'A N, longitude 82A degrees, 59' E) near the equatorial ionization anomaly (EIA) crest in India, to study the effect of geomagnetic storm on the variation of TEC, during the low solar active period of May 2007 to April 2008. Three most intense-but still moderate class-storms having a rapid decrease of Dst-index observed during the GPS recorded data have been analyzed, which occurred on 20 November 2007, 9 March 2008 and 11 October 2008 were selected and storm induced features in the vertical TEC (VTEC) have been studied considering the mean VTEC value of quiet days as reference level. The possible reasons for storm time effects on VTEC have been discussed in terms of local time dependence, storm wind effect as well as dawn-dusk component of interplanetary electric field (IEF) Ey intensity dependence.
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页码：447 / 458
页数：12
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