Abstract
A hierarchical cluster analysis has been made on the geomagnetic and geoelectric data of Nagoya (ϕ=21. 1°), Japan (1978–1981, 1985, 1987) and geomagnetic data of Wuchang (ϕ=19. 1°), China (1985–1995). From the cluster diagram it is seen that the monthly mean occurrence of Pc3–4 observed at these two sites can be best grouped into 3 clusters.
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Supported by the National Natural Science Foundation of China
Zhao Zhengyu: born in 1952, Doctor, Associate professor
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Zhengyu, Z., Xinqing, S. & Shuguo, X. A hierarchical cluster analysis of low-latitude Pc3—4 MHD waves. Wuhan Univ. J. Nat. Sci. 4, 61–63 (1999). https://doi.org/10.1007/BF02827622
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DOI: https://doi.org/10.1007/BF02827622