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Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/4544

Title: Blanketing sporadic E layer near the magnetic equator
Authors: Chandra, H
Rastogi, R. G
Keywords: Equatorial Electrojet
Ionograms
Ionospheric Drift
Magnetic Equator
Metal Ions
Sporadic E Layer
Diurnal Variations
Ion Temperature
Magnetic Variations
Periodic Variations
Solar Activity
Solar Cycles
Vertical Distribution
Issue Date: Jan-1975
Publisher: American Geophysical Union
Citation: Journal of Geophysical Research, Vol. 80, pp. 149 - 153
Abstract: A study of the ionograms obtained at Kodaikanal (dip latitude 1.7 N) during the period 1954-1966 has shown that the daily variation of the occurrence of the blanketing type of sporadic E has a major peak around 1700 LT in the evening and a minor peak around 0800 LT in the morning and is practically inhibited around midday hours when the electrojet currents are maximum. Further, blanketing sporadic E is most frequent during local summer months and in years of minimum solar activity. In individual cases, blanketing sporadic E occurs during the period of very weak or reversed electrojet currents. The ionospheric drifts during these occasions show predominantly a north-south component. It is suggested that the equatorial blanketing sporadic E is due to the transport and accumulation of long-lived metallic ions from tropical latitudes to the magnetic equator by equatorward winds during the period when the electrojet currents are very weak and the upward Hall polarization field is thus absent.
URI: http://hdl.handle.net/2248/4544
ISSN: 0148-0227
Alternative Location: http://dx.doi.org/10.1029/JA080i001p00149
http://adsabs.harvard.edu/abs/1975JGR....80..149C
Copyright: © American Geophysical Union
Appears in Collections:IIAP Publications

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