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<strong>Extensibility of External Magnetic Potential at High Latitudes - Antarctica</strong>

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Title Statement <strong>Extensibility of External Magnetic Potential at High Latitudes - Antarctica</strong>
 
Added Entry - Uncontrolled Name KUMAR, ANIL ; INDIAN INSTITUTE OF GEOMAGNETISM NEW PANVEL NAVI MUMBAI
Akhila, J C K
Sherin A, Ann
 
Uncontrolled Index Term Antarctica; External magnetic potential; Electrodynamics; Global electric circuit; Spherical cap harmonicanalysis
 
Summary, etc. <p>We investigated the external magnetic potential due to solar forcing, with nine years of data during 2001-2009, coveringthe deep solar minimum (2006-2009), at two stations: one is in the polar cap -Vostok (78º27'S, 106º52’E; mag. lat 83<sup>o</sup>S) andanother is in the subauroral region - Maitri (70º45'S, 11º43'E: mag. lat 67<sup>o</sup>S) in Antarctica. The significance of the work isassociated with space weather prediction and its impact on planet Earth. We used Advance Composition Explorer (ACE)satellite data for the aforesaid period for a thorough understanding of influences due to solar wind origin and to compare theparameter observed in these regions. We used the spherical cap harmonic analysis (SCHA) function as a tool. The inferenceindicates that at Vostok the magnitude is enhanced throughout and depicts a broad ambient external magnetic potential. Itseems to be essentially the intensification of the region 1 currents whereas at Maitri intense electric fields are producedduring geomagnetic perturbations which drive a system of disturbed time Region 2 currents over the quiet time currents.During this scenario in Maitri there are noticeable peaks or enhancements in the magnetic potential that can be observedmainly during geomagnetic disturbances. Hence the regression relation developed for external magnetic potentialcalculation, in terms of solar wind parameters agrees well with polar cap region and the area is relatively less exploredearlier, the present investigation can be expected to add knowledge about that regime.</p>
 
Publication, Distribution, Etc. Indian Journal of Pure & Applied Physics (IJPAP)
2023-01-12 11:57:29
 
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http://op.niscair.res.in/index.php/IJPAP/article/view/68529
 
Data Source Entry Indian Journal of Pure & Applied Physics (IJPAP); ##issue.vol## 61, ##issue.no## 01 (2023): Indian Journal of Pure & Applied Physics
 
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Nonspecific Relationship Entry http://op.niscair.res.in/index.php/IJPAP/article/download/68529/465624607
http://op.niscair.res.in/index.php/IJPAP/article/download/68529/465624608
http://op.niscair.res.in/index.php/IJPAP/article/download/68529/465624609
 
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