Ionospheric F2 layer responses to total solar eclipses at low and mid-latitude

摘要: Abstract In this article, we presented ionospheric F2 responses to total solar eclipses on the basis of data obtained from five (5) equatorial/low-latitude and twenty-seven (27) mid-latitude ionosonde stations, which are within obscuration percentage 50–100% path progression. Statistically, diurnal changes in layer peak height hmF2 electron density NmF2, as well latitudinal hemispheric dependence contribution both magnetic activities during eclipse window were investigated. The estimation ionizing radiation that remains unmasked was carried out. Plasma diffusion processes dominate region plasma, determine at formed mid-latitude. decreased window, closely following variation local However, equatorial/low-latitude, plasma distribution depends combine effect background nighttime irregularities mechanism. uncertainty level estimated E ( t ) justifies relationship. increase deviation increases with latitude delay time (∆ T northern hemisphere Conversely, southern decreases an ∆ latitude. influence combined activity disturbances cannot overlooked eclipse. At shadow, decreasing activity. During quiet conditions maximum NmF2/hmF2 day more decrease/increase than control overturned disturbed condition.