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.
Newman, P., J. Geophys. Research, 64, 923 (1959).
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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