著者

Rikitake Tsuneji

出版者

東京大学地震研究所

雑誌

東京大學地震研究所彙報 (ISSN:00408972)

巻号頁・発行日

vol.34, no.4, pp.283-289, 1957-01-30

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Magneto-hydrodynamic oscillations of a simple mode are studied in relation to the stability condition of the earth's dynamo. The influence of the Coriolis force is found to be considerable. The previous result, that the toroidal magnetic field would not be large in order to have a stable dynamo, should be abandoned when we take the earth's rotation into account. It seems acceptable that strong magnetic fields which have been suggested by E. C. Bullard exist in the earth's core.