Investigation of Ionospheric Response to Geomagnetic Storms over a Low Latitude Station, Ile-Ife, Nigeria

• Autorzy: Jimoh O. E. , Yesufu T. K. , Ariyibi E. A.

Identyfikatory

DOI

10.1515/acgeo-2016-0013

• Języki publikacji: EN

Abstrakty

EN

Due to several complexities associated with the equatorial ionosphere, and the significant role which the total electron content (TEC) variability plays in GPS signal transmission, there is the need to monitor irregularities in TEC during storm events. The GPS SCINDA receiver data at Ile-Ife, Nigeria, was analysed with a view to characterizing the ionospheric response to geomagnetic storms on 9 March and 1 October 2012. Presently, positive storm effects, peaks in TEC which were associated with prompt penetration of electric fields and changes in neutral gas composition were observed for the storms. The maximum percentage deviation in TEC of about 120 and 45% were observed for 9 March and 1 October 2012, respectively. An obvious negative percentage TEC deviation subsequent to sudden storm commencement (SSC) was observed and besides a geomagnetic storm does not necessarily suggest a high scintillation intensity (S4) index. The present results show that magnetic storm events at low latitude regions may have an adverse effect on navigation and communication systems.

Słowa kluczowe

EN

geomagnetic storm; electric field; scintillation; percentage deviation; total electron content

PL

burza magnetyczna; pole elektryczne; scyntylacja; odchylenie procentowe

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2016
• Tom: Vol. 64, no. 3
• Strony: 772--795
• Opis fizyczny: Bibliogr. 45 poz.

Twórcy

autor

Jimoh O. E.

• Department of Physics, Obafemi Awolowo University, Ile-Ife, Nigeria

autor

Yesufu T. K.

• Department of Electronic and Electrical Engineering, Obafemi Awolowo University, Ile-Ife, Nigeria

autor

Ariyibi E. A.

• Department of Physics, Obafemi Awolowo University, Ile-Ife, Nigeria

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę