scholarly journals Long-duration geomagnetic storm effects on theDregion of the ionosphere: Some case studies using VLF signal

2015 ◽  
Vol 120 (1) ◽  
pp. 778-787 ◽  
Author(s):  
Abhijit Choudhury ◽  
Barin Kumar De ◽  
Anirban Guha ◽  
Rakesh Roy
Keyword(s):  
Case Studies ◽  
Geomagnetic Storm ◽  
Storm Effects ◽  
Long Duration

scholarly journals Ionospheric observations during the geomagnetic storm events on 24-27 July 2004: Long-duration positive storm effects

2012 ◽  
Vol 117 (A9) ◽  
pp. n/a-n/a ◽  
Author(s):  
Chigomezyo M. Ngwira ◽  
Lee-Anne McKinnell ◽  
Pierre J. Cilliers ◽  
Anthea J. Coster
Keyword(s):  
Geomagnetic Storm ◽  
Storm Events ◽  
Storm Effects ◽  
Long Duration

scholarly journals Evaluation of geomagnetic storm effects on the GPS derived Total Electron Content (TEC)

2015 ◽  
Vol 640 ◽  
pp. 012072 ◽  
Author(s):  
P K Purohit ◽  
Azad A Mansoori ◽  
Parvaiz A Khan ◽  
Roshni Atulkar ◽  
Purushottam Bhawre ◽  
...  
Keyword(s):  
Total Electron Content ◽  
Geomagnetic Storm ◽  
Electron Content ◽  
Total Electron ◽  
Storm Effects

scholarly journals Geomagnetic storm and equatorial spread-F

2004 ◽  
Vol 22 (9) ◽  
pp. 3231-3239 ◽  
Author(s):  
F. Becker-Guedes ◽  
Y. Sahai ◽  
P. R. Fagundes ◽  
W. L. C. Lima ◽  
V. G. Pillat ◽  
...  
Keyword(s):  
Case Studies ◽  
Geomagnetic Storm ◽  
Geomagnetic Storms ◽  
Equatorial Spread F ◽  
University Center ◽  
Different Seasons ◽  
Spread F ◽  
Salient Features ◽  
The University ◽  
Ionospheric Sounding

Abstract. In August 2000, a new ionospheric sounding station was established at Sao Jose dos Campos (23.2° S, 45.9° W; dip latitude 17.6° S), Brazil, by the University of Vale do Paraiba (UNIVAP). Another ionospheric sounding station was established at Palmas (10.2° S, 48.2° W; dip latitude 5.5° S), Brazil, in April 2002, by UNIVAP in collaboration with the Lutheran University Center of Palmas (CEULP), Lutheran University of Brazil (ULBRA). Both the stations are equipped with digital ionosonde of the type known as Canadian Advanced Digital Ionosonde (CADI). In order to study the effects of geomagnetic storms on equatorial spread-F, we present and discuss three case studies, two from the ionospheric sounding observations at Sao Jose dos Campos (September and November 2000) and one from the simultaneous ionospheric sounding observations at Sao Jose dos Campos and Palmas (July 2003). Salient features from these ionospheric observations are presented and discussed in this paper. It has been observed that sometimes (e.g. 4-5 November 2000) the geomagnetic storm acts as an inhibitor (high strong spread-F season), whereas at other times (e.g. 11-12 July 2003) they act as an initiator (low strong spread-F season), possibly due to corresponding changes in the quiet and disturbed drift patterns during different seasons.

The long-duration positive storm effects in the equatorial ionosphere over Jicamarca

2015 ◽  
Vol 120 (2) ◽  
pp. 1311-1324 ◽  
Author(s):  
Jiawei Kuai ◽  
Libo Liu ◽  
Jing Liu ◽  
Biqiang Zhao ◽  
Yiding Chen ◽  
...  
Keyword(s):  
Equatorial Ionosphere ◽  
Storm Effects ◽  
Long Duration
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