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Analysis on 29 March 2006 eclipse effect on the ionosphere over Ilorin, Nigeria
Physics Department, University of Ilorin, Ilorin, Nigeria
Aeronomy and Radio Propagation Laboratory, Abdus Salam International Centre for Theoretical Physics, Trieste, Italy
Physics Department, University of Ilorin, Ilorin, Nigeria
Aeronomy and Radio Propagation Laboratory, Abdus Salam International Centre for Theoretical Physics, Trieste, Italy
Aeronomy and Radio Propagation Laboratory, Abdus Salam International Centre for Theoretical Physics, Trieste, Italy
Physics Department, University of Ilorin, Ilorin, Nigeria
Physics Department, University of Ilorin, Ilorin, Nigeria
Ionospheric measurements obtained during the 29 March 2006 eclipse period over Ilorin, Nigeria (longitude 4.57°E, latitude 8.53°N, dip 4.1°S), an equatorial station, are used for this study. The data are used in the determination of photoionisation rates (q) and loss coefficients at various heights. It was found that the transition height between the regions where the linear (β) and quadratic (α) loss coefficients hold is around 200 km. Some form of validations of the parameters q and α were carried out. A comparison of the results of production rates, vertical velocities and loss coefficients obtained for the F region from our study with those obtained at high solar activity for a previous eclipse at a station close to Ilorin indicates solar activity effects.
Received 30 April 2009; accepted 11 August 2009; published 7 November 2009.
Citation: (2009), Analysis on 29 March 2006 eclipse effect on the ionosphere over Ilorin, Nigeria, J. Geophys. Res., 114, A11303, doi:10.1029/2009JA014416.
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