A MEASUREMENT AT OTTAWA OF THE CHANGE IN HEIGHT WITH LUNAR TIME OF THE E REGION OF THE IONOSPHERE

Abstract
The method used by Appleton and Weekes to detect the lunar variation of height of the E region of the ionosphere has been used to determine the amplitude and phase of the lunar height variation at Ottawa. Observations were made from October to December, 1952. A sinusoidal variation of height of 1.5 km. amplitude and 12 hr. period was observed. The maximum height occurred about six hours after lunar transit. This result differs in phase by six hours from that observed in Cambridge in 1938.
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