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Vertical variance analysis of geomagnetic disturbance during solar cycle 23<br />

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Title Statement Vertical variance analysis of geomagnetic disturbance during solar cycle 23<br />
 
Added Entry - Uncontrolled Name Abraham, Abraham ; Department of Physics, Christian College, Chengannur, Kerala 689 122, India
Gangadhran, Renuka ; Department of Physics, University of Kerala, Trivandrum, Kerala 695 581, India
Cherian, Ligi ; Department of Physics, Christian College, Chengannur, Kerala 689 122, India
Varghese, Asha Anie; Department of Physics, Christian College, Chengannur, Kerala 689 122, India
Chandran, Rakesh ; Department of Physics, University of Kerala, Trivandrum, Kerala 695 581, India
Mathew, Tiju Joseph; Department of Physics, Christian College, Chengannur, Kerala 689 122, India
Chacko, Jim ; Department of Physics, Christian College, Chengannur, Kerala 689 122, India
Varghese, Blessy ; Department of Physics, Christian College, Chengannur, Kerala 689 122, India
Vijayan, Gopika Sreela; Department of Physics, Christian College, Chengannur, Kerala 689 122, India
Nandakumar, Ankitha ; Department of Physics, Christian College, Chengannur, Kerala 689 122, India
Sankarapillai, Lekshmi ; Department of Physics, SD College, Alleppey, Kerala 688 003, India
Prasannan, Syamily ; Department of Physics, Christian College, Chengannur, Kerala 689 122, India
 
Uncontrolled Index Term Space physics; Geomagnetism;
Geomagnetic disturbance, Solar wind–magnetosphere interactions, Magnetic storms
 
Summary, etc. <p>The geomagnetic field consists of temporal variations induced primarily by the variations in the solar wind and embedded interplanetary magnetic field. 34 stations across the Earth have been categorized in this paper on the basis of their geomagnetic disturbance during solar cycle 23 (1997-2008). The Vertical Variance (VV) disturbance quantifier has been used to develop such profile. The latitude profile of geomagnetic disturbance has been found to exhibit a typical 'Knee' behaviour, with the fluctuation content seen to rise sharply beyond this critical latitude determined near 52° latitude. The increasing trend in geomagnetic fluctuation content however is seen to end around the auroral oval beyond where abrupt variations has been observed indicating the transition from closed to open magnetic field lines. The physical mechanism behind this trend has also been explored. The VV analysis of geomagnetic disturbance has revealed prominent features of solar wind – magnetosphere coupling.</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/23997
 
Data Source Entry Indian Journal of Radio & Space Physics (IJRSP); ##issue.vol## 49, ##issue.no## 4 (2020): Indian Journal of Radio & Space Physics
 
Language Note en
 
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