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Author Obayashi, T. ♦ Coroniti, S. C. ♦ Pierce, E. T.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS AND MATHEMATICS ♦ ASTROPHYSICS ♦ ATMOSPHERE ♦ AURORAE ♦ COSMIC RADIATION ♦ DIAGRAMS ♦ DISTURBANCES ♦ GEOPHYSICS ♦ IONOSPHERE ♦ LEVELS ♦ NOISE ♦ NUCLEAR EXPLOSIONS ♦ SIGNALS ♦ SOLAR FLARES ♦ SUN ♦ VARIATIONS
Abstract Geophysical effects of nuclear tests carried out in Augast 1958 at Johnston Island in the Pacific are discussed. These tests were reported to include highaltitude explosions at heights of the order of 100 miles. Observations show that one test coincided with the appearance of an aurora and the occurrence of radio fade-outs at Apia, which lies at the opposite end of a geomagnetic line of force. Variations in time of signals received, atmospheric noises and mean diurnal variation of atmospheric noise are plotted. Observed effects are discussed and are compared to those accompanying the sudden ionospheric disturbance due to solar flare.
Educational Use Research
Learning Resource Type Article
Publisher Date 1959-05-23
Publisher Department Hiraiso Radio Wave Observatory, Radio Research Lab., Japan ♦ AVCO Research and Advanced Development Div., Wilmington, Mass.
Journal Nature
Volume Number 183
Organization Hiraiso Radio Wave Observatory, Radio Research Lab., Japan ♦ AVCO Research and Advanced Development Div., Wilmington, Mass.


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