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Australian Journal of Physics Australian Journal of Physics Society
A journal for the publication of original research in all branches of physics
RESEARCH ARTICLE

The Phase Speed of a Travelling Disturbance in the F Region of the Ionosphere and its Comparison with Group Velocity

LH Heisler and JD Whitehead

Australian Journal of Physics 14(4) 481 - 488
Published: 1961

Abstract

Three methods of measuring the phase speed of a disturbance in the F region, that is, the speed of a peak or trough in the isoionic contours, are given using ionograms records from one station. The analysis has been applied to one such disturbance whose group velocity was known to be 10 km/min. All three methods gave the phase speed to be about half of this. The theoretical explanation of this observation is discussed.

https://doi.org/10.1071/PH610481

© CSIRO 1961

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