Indian Journal of Physics

, Volume 86, Issue 11, pp 947–950 | Cite as

A theoretical study of diurnal shift in reflection height of VLF waves using IRI electron density model

  • T. Madhavi Latha
  • P. Peddi Naidu
  • D. N. Madhusudhana Rao
  • M. Indira Devi
Original Paper
First Online:
Received:
Accepted:

Abstract

Electron density profiles for the International Reference Ionosphere (IRI) 2001 and 2007 models have been utilized in evaluating the D-region conductivity parameter in earth ionosphere wave guide calculations. The day to night shift in reflection height of very low frequency (VLF) waves has been calculated using D-region conductivities derived from IRI models and the results are compared with those obtained from phase variation measurements of VLF transmissions from Rugby (England) made at Visakhapatnam (India). The values derived from the models are found to be much lower than those obtained from the experimental measurements. The values derived from the IRI models are in good agreement with those obtained from exponential conductivity model.

Keywords

D-region Earth–ionosphere wave-guide Radio wave propagation IRI model 

PACS Nos.

94.20.Vv 94.30.Va 95.85.Bh 
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Copyright information

© Indian Association for the Cultivation of Science 2012

Authors and Affiliations

  • T. Madhavi Latha
    • 1
  • P. Peddi Naidu
    • 2
  • D. N. Madhusudhana Rao
    • 3
  • M. Indira Devi
    • 2
  1. 1.Department of PhysicsM.R.P.G. CollegeVizianagaramIndia
  2. 2.Department of PhysicsAndhra UniversityVisakhapatnamIndia
  3. 3.G.V.P. College of Engineering for WomenVisakhapatnamIndia

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