Quantifying the EEJ current with ground-based ionosonde inferred vertical E × B drifts in the morning hours over Ilorin, West Africa

Adeniyi, Jacob and Adimula, Isaac and Adebesin, Babatunde and Reinisch, Bodo and Oladipo, Olusola and Olawepo, Olayinka and Yumoto, Kiyohumi (2014) Quantifying the EEJ current with ground-based ionosonde inferred vertical E × B drifts in the morning hours over Ilorin, West Africa. Acta Geophysica, 62 (3). pp. 658-678. ISSN 1895-7455

Full text not available from this repository.
Official URL: http://dx.doi.org/10.2478/s11600-014-0202-0

Abstract

The relationship between the ground-based inferred vertical E x B drifts (Vz) and the magnetic equatorial electrojet current during year of solar minima was presented. Both the diurnal and seasonal Vz variations are positively directed during the daytime and negative at nighttime. The evening time Pre-reversal enhancement occur around 1900 LT. The fairly strong linear relationship between the electrojet current strength and Vz recorded higher correlations during the daytime (0600-1600 LT). The maximum morning time proxy parameter described by E = [d(ΔHILR)/dt]max in the morning hours, indicating the east-west electric field in EEJ corresponds reasonably well with the E x B drift and hence, can be used as a proxy parameter for representing Vz in the morning hours. The daytime EEJ magnitude seasonal changes are connected with a change in conductivity emerging from the action of turbulence and divergence of momentum flux. These waves above the dynamo region are suggested to lead to partial counter electrojet during the equinoctial months.

Item Type: Article
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Depositing User: DR. B. OLUFEMI ADEBESIN
Date Deposited: 12 Jun 2015 20:24
Last Modified: 12 Jun 2015 20:24
URI: http://eprints.lmu.edu.ng/id/eprint/217

Actions (login required)

View Item View Item