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Electron-Density Profiles of the Ionosphere Observed Near Washington, DC during the Spring of 1971
NAVAL RESEARCH LAB WASHINGTON DC
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Radar Thomson scatter observations of the midday ionosphere over Randle Cliff have been made during March-May 1971. The correlation between various ionospheric parameters has been determined. Emphasis has been placed on the effect that magnetic activity has on the shape of the electron-density distribution. In general, following a magnetic impulse, the F2 maximum height is initially raised in proportion to the amount of magnetic activity, is subsequently lowered, and eventually returns to the equilibrium position. Also the F2 maximum density and the total electron content below 600 km decrease as the length of time between the magnetic-activity impulse and the measurement increases. This situation exists for at least a day thereafter the diminution is reduced, and the profile gradually assumes its average shape.
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