Browsing by Author "Harper, Robert M"

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    Improved observational programs for the Arecibo ionospheric observatory
    (1969) Harper, Robert M; Gordon, William E.
    A new set of ionospheric data taking programs have been completed for the Arecibo Ionospheric Observatory. One will cover the 200-2000 km range and measure electron number densities, temperatures and composition with a time resolution of 25 min. at low altitudes and 1 and one-fourth hrs. at high altitudes. The other program will measure number densities, temperatures, and photo-electron fluxes in the 250-500 km region (i.e., pure 0+ region) with a time resolution of approximately 5 min. By increasing the efficiency of the CDC-3300 computer system, these programs increase the capabilities of the Observatory and improve the value of the data for geophysical studies.