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ホーム > 刊行物 > 地磁気観測所要報 第06巻 第02号 > 地磁気観測所要報 第06巻 第02号 >On the Earth-Current Potentials at the Memambetsu Magnetic Observatory

地磁気観測所要報 第06巻 第02号, p.114, March, 1953


On the Earth-Current Potentials at the Memambetsu Magnetic Observatory


Banno, N.


Abstract

 By using the data of 1950, the present author investigated the characteristics of earth-current potentials at the Memambetsu magnetic observatory, where the observation of earth-current has been carried out since November, 1949. This observatory is apart from the coast of Okhotck-sea about 15 km. In spite of this pretty large distance, the variation of earth-current potential at this station points mainly normal to the coast-line, as found at the other observatories near the coast. It may be considered that the fact depends on the difference of the conductivity between land and sea, and the electric currents have a tendency to flow toward the sea. Consequently,we must consider the phenomena of earth-current potentials,which are induced by the changes of magnetic field,from the standpoints of both the electric characters in the vicinity of the station and those in fairly large area surroundings it.



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