Abstract
IT is generally agreed that the absorption of radio waves in the ionosphere occurs at heights below about 100 km. In a particular instance it is usually possible to deduce the approximate height by indirect reasoning. For example, Hultquist1 has used indirect evidence to place the abnormal absorption which follows intense solar flares at heights as low as 50 km. As yet there are too few direct measurements (using rockets) to provide a complete and consistent picture. This communication suggests a new method of estimating the height of the regions responsible for abnormal absorption of the kind associated with auroral disturbances.
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References
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Ziauddin, S., and Forsyth, P. A., J. Geophys. Res., 66, 2315 (1961).
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ZIAUDDIN, S. A Method of Estimating Ionospheric Absorption Heights from Recovery Times. Nature 191, 1084–1085 (1961). https://doi.org/10.1038/1911084a0
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DOI: https://doi.org/10.1038/1911084a0
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