论文信息 - A Statistical Analysis of Spread F Occurrence During Minimum and Maximum Solar Activities in Low Latitude Region

A Statistical Analysis of Spread F Occurrence During Minimum and Maximum Solar Activities in Low Latitude Region

This research presents an annual and seasonal variations of spread F observed by Ionosonde. The comparative study equatorial Spread F (ESF) occurrences during minimum and maximum solar activity (2008-2011) has been analyzed using two ionosondes networks at Kototabang (0.2ºS, 100.3ºE, -10.4º magnetic latitude) and Tanjungsari (0.3°S, 100.35 ° E, 6.15 ° S, 108.4 ° E magnetic latitude), Indonesia. The occurrence of ESF was analyzed with solar F10.7 cm flux and Sunspot Number (SSN). The analysis shows annual and seasonal variation of ESFs, the maximum of percentages ESF shows during September Equinox and the minimum of percentages ESF during December solstice during 2008-2011 in Kototabang and Tanjungsari. The occurrences of ESF in post-midnight were more dominant than post-sunset in June solstice and December Solstice during solar activity minimum (2008-2010).

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