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Assessment of geomagnetic storm effects over Ethiopian ionosphere by using GPS measurements

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Title Assessment of geomagnetic storm effects over Ethiopian ionosphere by using GPS measurements
 
Creator Mekonnen, Z Legesse
Endeshaw, T Lake
 
Subject Disturbance storm time (Dst)
Interplanetary magnetic field (IMF Bz)
Solar wind speed (sws)
Total electron content (TEC)
 
Description 197-209
In this paper we have investigated the effects of geomagnetic storm on the variation of interplanetary magnetic field (IMF Bz), disturbance storm time (Dst), solar wind speed and total electron content (TEC) over Ethiopian ionosphere. A total of 17 geomagnetic storms have analysed by using ground based Global Positioning System (GPS) stations at Bahir Dar (11o N, 38o E), Debark(4.32o N, 109.48o E), Armi (3.03o N, 109.29o E), Nazret (8.57o N, 39.29o E), Robe(7.60o N, 40oE), Assosa (1.14o N, 106.16o E), and Ambo( 8.59o N, 37.51o E) from the years 2010 to 2013. The results have revealed that there is a mixed effect of geomagnetic storm on the variation of interplanetary magnetic field (IMF Bz), disturbance storm time (Dst), solar wind speed and total electron content (TEC), however, most of the effects were positive and might be attributed to the prompt penetration electric fields (PPEFs) and disturbed dynamo fields.
 
Date 2021-07-07T06:33:08Z
2021-07-07T06:33:08Z
2020-12
 
Type Article
 
Identifier 0975-105X (Online); 0367-8393 (Print)
http://nopr.niscair.res.in/handle/123456789/57658
 
Language en
 
Publisher CSIR-NISCAIR, India
 
Source IJRSP Vol.49(4) [December 2020]