Kuboki, T., Kurusu, K.
Supplementary Report on Intercomparison Observation at Kakioka and Memambetsu by Means of QHM Magnetometer During 1952-1953
Memoirs of Kakioka Magnetic Observatory, Vol. 9, No. 1, pp. 1-1, March, 1959
Kondo, G.
The Recent Status of Secular Varlation of the Atmospheric Electric Elements and their Relation to the Nuclear Explosions
Memoirs of Kakioka Magnetic Observatory, Vol. 9, No. 1, pp. 2-6, March, 1959
要旨
柿岡に於ける気象電気要素の最近の変比には次のような異状がみられる．
1．電位傾度の減少
2，電気伝導度の増加
3．空地電流の増加
4．空間電荷には異常が認められない
このような変化は人工放射能の最近の増加と関係があると思われる．
Yokouchi, Y.
Earth-Current Observation at Kanoya
Memoirs of Kakioka Magnetic Observatory, Vol. 9, No. 1, pp. 7-20, March, 1959
要旨
鹿昼の地電流観測の資料1950～1953の四ヵ年聞のものにつき太場日変化及び太陰日変化を統計調査した．太陽日変化は柿岡の変化と多少異るが，地磁気の赤道型変化の日が相当多く入つて来るためであろう．又太陰日変化は非常に大きく，これは大部分潮汐の影響によるものであることが諸種の統計結果から推察できるが，その物理的機構についてはまだ決断されてない．
Yoshimatsu, T.
A Note on the Distribution of Dst of the Geomagntic-north Component
Memoirs of Kakioka Magnetic Observatory, Vol. 9, No. 1, pp. 21-26, March, 1959
要旨
最近 S.Chapman と杉浦教授は磁気嵐の分類につき立派な労作を発表さされつゝある．この小文はこれにもとずき Dst の分布に関連して若干の意見をのべた．
Yoshimatsu, T.
On the Frequency of Geomagnetic Pulsations Observed in Japan during the IGY ( I )
Memoirs of Kakioka Magnetic Observatory, Vol. 9, No. 1, pp. 27-32, March, 1959
要旨
IAGA 第10委員会に出している国際報告等にもとずき，毎月の脈動出現頻度，季節変化についてしらべた。Pt と pc では頻度分布においてだいぶん異るところがみられる。各観測所どうしも差異が区々である。使用する器機の差異についてもふれ，国際規約の形式えの希望（脈動指数）も併せ述べた。
Yama,guchi, Y., Banno, N., Oshima, H. Araki, T.
Effect of the Solar Eclipse, 19th April,1958 on the Geomagnetic Field and Earth-Current
Memoirs of Kakioka Magnetic Observatory, Vol. 9, No. 1, pp. 33-40, March, 1959
要旨
1958年4月19日の日食に際し，女満別，柿岡，鹿屋の三地磁気観測所に於いて，地磁気，地電流に対する日食の影響を観測した．不幸にして，当日は磁気的には稍あれた状況であつた為に，地磁気，地電流の日変化に対する影響の量を決定的に見出すことはできず，再び次回の観測を待たねばならなくなつた．
Yamaguchi, Y.
A Note of the Effect on the Geomagnetic Field of the Solar Eclipse
Memoirs of Kakioka Magnetic Observatory, Vol. 9, No. 1, pp. 41-46, March, 1959
要旨
地磁気静穏日，日変化に及ぼす日食の影響は，従来一様な日変化磁場を仮定して評価されてきたが，この近似は稍々粗雑すぎるので，通常の日変化磁場を採用してより一般的に影響の量を評価する方法を述べた．
河村まこと, 近藤五郎
日食時における空中電気要素の変化について
地磁気観測所要報, 第9巻, 第1号, pp. 47-56, 1959年3月
要旨
During the solar eclipse of April 19, 1958, the potential gradient and the conductivity were measured at Kanoya Magnetic Observatory. In this paper, the results of above observation are described, together with the variations of atmospheric electric elements at Kakioka Magnetic Observatory. According to the results it seems that the potential gradient decrease and conductivity increase at the eclipse time.
吉松隆三郎
鹿屋における地電流の変化と桜島火山活動について(Ⅱ)－昭和30～31年における活動－
地磁気観測所要報, 第9巻, 第1号, pp. 57-64, 1959年3月
要旨
Abnormal changes of the monthly mean values of earth-current potentlals observed at Kanoya，Kagoshima Prefecture, were examined in studying the relation to the activity of the volcano Sakurajima, about 27 km apart northwest of Kanoya, of which latest moderate eruption occurred on October 13, 1955 and was followed by many minor volcanic eruptions and microtremors up to the middle of March in 1957.
It was found that the deduced value of earth potentials, f(t)＝△N - △N + αP, shows an intimate connection with the volcanic activity which may be responsible for the changes of the state of magma in deeper part of the volcano, where △N is the deviation for each month from the general linear trend assumed of the monthly mean values, △N the mean value of △N in the calm period of the volcanic activity 1952-54, P the monthly total number of microtremors and α a constant.
柳原一夫
大地の分極と地電流
地磁気観測所要報, 第9巻, 第1号, pp. 65-74, 1959年3月
要旨
At the first and finl times of introducing the direct current into the earth through two electrodes, a transient decaying potential differrence is found sometimes between another pair of electrodes(Fig.1). This induced polarization was noticed by H.Note at 1930, and has been applied to electrical prospecting for ground water. (M.Iwasa, 1942).
Dielectric absorption of the layered earth for interpreting the phenomena became meaningless because the relaxation time by the theory was the order of ε/4πσ, that was less than lO-3 sec (T.Kiyono, 1949). An alternative is proposed in this paper. That is the concentration cell at the effective membrane formed by the capillary of clay particles.
Distribution of these concentration cells in the ground determines the magnitude of the induced polarization voltage of which observed value reaches sometimes to some tenths of the voltage measured between the electrodes at the stationary state. (Figs 5-8). These large observed values were not discussed in the paper by Vacquier et al (1957) who proposed the concentration cell earlier. But their cells are formed at the capillary between sand particles to which clay adheres, and clay plays the role in the source of ions.
The relaxation time of growth or decay of concentration cells at the capillary between clay particles in our theory is accounted as severl seconds to some minutes : that is observed decay times.
Kakioka Magnetic Observatory
Geomagnetlc Indices Ｋ and Ｃ for 1957 at Kakioka
Memoirs of Kakioka Magnetic Observatory, Vol. 9, No. 1, pp. 75-77, March, 1959
