Memoirs of the Kakioka Magnetic Observatory Vol.18 No.02， p.1, November, 1979
The Lunar and Solar Daily Geomagnetic Variations at Kakioka, Japan，1913-1976
Hourly values of declination, horizontal intensity and vertical intensity of the geomagnetic field at Kakioka for the period 1913-1976 have been analysed to determine their lunar and solar daily variations, by dividing these data in several ways according to season, sunspot number and magnetic activity. The results are tabulated by the first four harmonic coefficients determined by the Chapman-Miller method and are illustrated by daygraphs, vector diagrams and harmonic dials. Some characteristic points of the results are described and discussed.