Abstract
THE successful operation of the flux-gate magnetometer on board. Explorer XII (launched on August 16, 1961) made possible the undertaking of a correlation investigation of geomagnetic field observations of ground-based magnetometers with the satellite observations at (geocentric) altitudes ranging from about three to thirteen Earth radii (RE). The Explorer XII magnetometer recorded the field approximately three times per second. Satellite data (points) discussed here have been obtained by averaging over 10 sec. Errors in the averages are estimated less than ± 7γ. Presented here are two examples of Explorer XII magnetic records around the times of world-wide sudden impulses on the ground.
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References
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Jensen, D. C., and Cain, J. C., unpublished, presented at April 1962 meeting of A.G.U., Washington, D. C.
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NISHIDA, A., YOUNG, J. Explorer XII Observations of Magnetic Sudden Impulses in the Earth's Magnetosphere. Nature 201, 1113–1114 (1964). https://doi.org/10.1038/2011113a0
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DOI: https://doi.org/10.1038/2011113a0
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