R. Selvakumaran

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In the present work tweeks recorded at Indian low latitude ground station Allahabad (Geomag. lat. 16.05° N) during April 2007 to March 2008 have been used to study the occurrence characteristics, distance & reflection height in the Earth Ionospheric waveguide. Results shows that summer seasons has highest tweek occurrence ∼63% and lowest(More)
[1] Interplanetary (IP) shocks are mainly responsible for the sudden compression of the magnetosphere, causing storm sudden commencement (SC) and sudden impulses (SIs) which are detected by ground-based magnetometers. On the basis of the list of 222 IP shocks compiled by Gopalswamy et al. (2010), we have investigated the dependence of SC/SIs amplitudes on(More)
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