Accession Number : AD0654409

Title :   BEHAVIOR OF VLF RAY PATHS IN THE IONOSPHERE,

Corporate Author : IOWA UNIV IOWA CITY DEPT OF PHYSICS AND ASTRONOMY

Personal Author(s) : Shawhan,Stanley D.

Report Date : MAY 1967

Pagination or Media Count : 77

Abstract : Two dimensional VLF ray paths have been computed for a model ionosphere with a centered dipole magnetic field and a diffusive equilibrium distribution of electrons and H+, He+ and O+ ions. The behavior of these ray paths are illustrated for variations with wave frequency, initial latitude, initial wave normal angle, initial altitude and the particular model. The behavior of VLF ray paths are used to qualitatively explain non-ducted whistlers, MR whistlers, SP whistlers, ion cyclotron whistlers, hook whistlers and quasi-trapped whistler mode energy.

Descriptors :   (*ELECTROMAGNETIC RADIATION, *IONOSPHERIC PROPAGATION), (*WHISTLERS, IONOSPHERIC DISTURBANCES), VERY LOW FREQUENCY, ELECTRONS, MAGNETOSPHERE, GEOMAGNETISM, ATMOSPHERE MODELS, NOISE

Subject Categories : Atmospheric Physics
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE