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Characteristics of the solar flare effect ( Sqa ) on geomagnetic field at Huancayo (Peru) and at Kakioka (Japan)

1952; American Geophysical Union; Volume: 57; Issue: 1 Linguagem: Inglês

10.1029/jz057i001p00001

2156-2202

Takesi Nagata,

Geomagnetism and Paleomagnetism Studies

Journal of Geophysical Research (1896-1977)Volume 57, Issue 1 p. 1-14 Characteristics of the solar flare effect (Sqa) on geomagnetic field at Huancayo (Peru) and at Kakioka (Japan) Takesi Nagata, Takesi NagataSearch for more papers by this author Takesi Nagata, Takesi NagataSearch for more papers by this author First published: March 1952 https://doi.org/10.1029/JZ057i001p00001Citations: 25AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Abstract The characteristics of solar flare type (s.f.) variations of the geomagnetic field at Huancayo, Kakioka, and Watheroo are statistically examined. The main indicators of these characteristics are the time from beginning of a s.f. variation to its maximum deviation (T1), and the ratio of its maximum deviation to the range of daily variation at the corresponding time (ΔH/RH). With respect to both quantities, the data of the three stations show nearly the same values. The magnitude of the s.f. variations at Huancayo is abnormally large, but T1 and ΔH/RH show normal values. Assuming that the s.f. variation has an abrupt increase, the integrated electrical conductivity of the ionosphere is estimated with the aid of a theoretical calculation of transient dynamo-action. The result shows that the integrated conductivity of the ionosphere amounts to 6×10−8∼7×10−8 emu. over those three places. References McNish, A. G., Terr. Mag., 42, 7, 1937. Imamiti, S., Mem. Kakioka Mag. Obs., 1, 13 (1938), 5, 45 (1943);M. Hirayama, Geophys. Mag.,18,117 (1939);H. W. Newton, Mon. Not. R. Astr. Soc., Geophys. Sup.,5,200 (1948). Cowling, T. G., Proc. R. Soc., A, 183, 453, 1945. Hirono, M., J. Geomag. Geoelectr., 2, 1, 1950. Chapman, S., A. T. Price, Phil. Trans. R. Soc., A, 229, 427, 1930. Rikitake, T., Bull. Earthquake Res. Inst., Tokyo Univ., 28, 219263, 1951. Nagata, T., Rep. Ionosphere Res., Japan, 4, 155, 1950. Shapley, A. H., andR. M. Davis, Science, 110, 159 (1949); M. Oda and T. Takaura, Rep. Ionosphere Res. Japan, 5, 99 (1951). Schuster, A., Phil. Trans. R. Soc., A, 208, 131, 1908. Chapman, S., Phil. Trans. R. Soc., A, 218, 1, 1918. Ashour, A. A., A. T. Price, Proc. R. Soc., A, 195, 198, 1948. Sugiura, M., T. Nagata, Geophys. Notes, Tokyo Univ., 2No. 19, 1949. Chapman, S., and , Private communication. Citing Literature Volume57, Issue1March 1952Pages 1-14 ReferencesRelatedInformation