Abstract
IN 1957, one of us (H.A.B.) considered the initiation of an earth-magnetic field experiment to detect hydromagnetic waves in the upper ionosphere and exosphere. He suggested the use of very large wire loops (of about 100 km.2 area) as pick-up systems for earth-magnetic field perturbations. A large loop has the advantage of a very high signal-to-noise ratio, since it effectively averages out local magnetic interference.
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References
Berthold, W., Harris, A. K., and Hope, H., J. Geophys. Research (in the press).
Berthold, W., Harris, A. K., and Hope, H., “World-Wide Effects of Hydromagnetic Waves due to Argus”, manuscript in preparation, U.S. Army Signal Research and Development Laboratory, Fort Monmouth, New Jersey, 1959.
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Townsend, J. W., Science, 129, 80 (1959).
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BOMKE, H., RAMM, W., GOLDBLATT, S. et al. Global Hydromagnetic Wave Ducts in the Exosphere. Nature 185, 299–300 (1960). https://doi.org/10.1038/185299a0
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DOI: https://doi.org/10.1038/185299a0
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