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<p>Low latitude ionospheric variations during geomagnetic storms measured using ROCSAT-1 satellite observations</p>

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Title Statement <p>Low latitude ionospheric variations during geomagnetic storms measured using ROCSAT-1 satellite observations</p>
 
Added Entry - Uncontrolled Name Rana, Geeta ; J. C. Bose University of Science and Technology, YMCA,
Bardhan, Ananna ; Department of Physics, Manav Rachna University,
Sharma, D K ; Department of Physics, Manav Rachna University,
Yadav, M K ; J. C. Bose University of Science and Technology, YMCA
 
Uncontrolled Index Term Geomagnetic storm, ionospheric parameters, F2 region ionosphere, low latitude, satellite measurements, IRI-model.
 
Summary, etc. <p>This paper studies the response of ionospheric parameters- ion densities (O<sup>+</sup> and H<sup>+</sup>) and ion temperature (Ti) to a moderate (30 July 1999) and a strong (13 November 1999)  geomagnetic storm (GS) at low latitude Indian region using observations and modelling. The analysis has been carried out by using ROCSAT-1 satellite data over the region encompassed between 5-35º geog N and 65-95º geog E at an average altitude ~ 600 km. This study of the effect of these geomagnetic storms over the low-latitude F2 region ionosphere has been compared with the estimated values of IRI-2016 model. The ionospheric plasma parameters show anomalous behaviour during disturbed days compared to the quiet days. For the moderate GS, both the average O<sup>+</sup> and H<sup>+</sup> density are found to increase by a factor of around1.8 during disturbed and quiet days respectively as calculated by ROCSAT-1. For the strong GS, the average O<sup>+</sup>/H<sup>+</sup> density is found to increase by a factor of around 2.7/ 6.3 respectively during disturbed/quiet days as calculated by ROCSAT-1. And the Ti is observed showing the least or negligible variation both by measured and modelled values during moderate and strong GS.</p>
 
Publication, Distribution, Etc. Indian Journal of Radio & Space Physics (IJRSP)
2021-08-23 16:59:39
 
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http://op.niscair.res.in/index.php/IJRSP/article/view/32421
 
Data Source Entry Indian Journal of Radio & Space Physics (IJRSP); ##issue.vol## 49, ##issue.no## 4 (2020): Indian Journal of Radio & Space Physics
 
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Nonspecific Relationship Entry http://op.niscair.res.in/index.php/IJRSP/article/download/32421/465500186
http://op.niscair.res.in/index.php/IJRSP/article/download/32421/465543750
 
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