著者

石川 甲子男

出版者

日本測地学会

雑誌

測地学会誌 (ISSN:00380830)

巻号頁・発行日

vol.26, no.1, pp.50-58, 1980

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The problem of geomagnetic secular variation at Kanozan has been reported already by the author. In this report, the geomagnetic monthly mean values of Kanozan Geodetic Observatory were compared with those of the other observatories (Memanbetsu, Mizusawa, Kakioka and Kanoya), during the period from Jan . 1961 to Dec. 1979. From the results, it seems that the secular variations of differences of the geomagnetic field between Kanozan and other observatories are larger than its normal values .