Abstract
IT is important to glean information on ways in which cosmic rays are influenced in interplanetary space. If it were possible to find world-wide distributions of cosmic rays and their variations with time, one might be able to obtain information on modulation of cosmic rays by magnetic clouds in interplanetary space. As it is impossible, however, to normalize the cosmic-ray intensities at every station in the world at present, I investigated the world-wide distributions of local times of maximum intensity in the diurnal variations and their variations with time during the period of the International Geophysical Year, and the following results were obtained:
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References
Cosmic-Ray Intensity during the International Geophysical Year No. 1, No. 2 and No. 3 (Science Council of Japan, Tokyo).
Simpson, J. A., Fenton, K. B., Katzman, J., and Rose, D. C., Phys. Rev., 102, 1648 (1956).
Oguchi, T., and Kodama, M., Nature, 183, 103 (1959). Kodama, M., J. Geomag. Geoelect, (Kyoto), 10, 37 (1959).
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KANNO, T. World-wide Distribution of Diurnal Variation of the Neutron Intensity of Cosmic Rays. Nature 192, 250–251 (1961). https://doi.org/10.1038/192250a0
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DOI: https://doi.org/10.1038/192250a0
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