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Effect of intense geomagnetic storms on low-latitude TEC during the ascending phase of the solar cycle 24
The results presented in this paper are obtained from low-latitude ionospheric total electron content (TEC) variation during the chosen geomagnetic storm events happening during the solar cycle 24. We include the four intense geomagnetic storms that occurred on 26 September 2011, 15 July 2012, 19 February 2014 and 20 December 2015, depending upon the availability of TEC data. For this, we have used the TEC data from low-latitude station Varanasi (geographic latitude 25°, 16′N, geographic longitude 82°, 59′E and geomagn ...
Singh, Abha; Rathore, Vishnu; Kumar, Sanjay; Rao, S.; Singh, Sudesh; Singh, A.;
Published by: Journal of Astrophysics and Astronomy Published on: aug
YEAR: 2021   DOI: 10.1007/s12036-021-09774-8
geomagnetic storm; Global positioning system; low latitude; total electron contents
Prestorm enhancements in NmF2 and total electron content at low latitudes
The enhancement of electron concentrations in the ionosphere before geomagnetic storms is one of the open questions. Using ionosonde observations and total electron content (TEC) from Global Positioning System (GPS) measurements along longitude 120°E, we analyzed three low latitude pre-storm enhancement events that occurred on 21 April (day 111) 2001, 29 May (day 149) 2003, and 22 September (day 265) 2001, respectively, in the Asia/Australia sector. All three events (and other two cases on 9 August 2000 and 10 May 2002) sho ...
Liu, Libo; Wan, Weixing; Zhang, Man-Lian; Zhao, Biqiang; Ning, Baiqi;
Published by: Journal of Geophysical Research: Space Physics Published on:
YEAR: 2008   DOI: https://doi.org/10.1029/2007JA012832