地磁氣

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概要

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• Repeating geomagnetic dip surveys in Ooshima Island, the writer found out marked changes in the earths magnetic field at the early period of the 1950 eruption of Volcano Mihara, the changes being recognized as the demagnetization in the deep interior of the volcano due to temperature-rise.<BR>In order to study the geomagnetic change in detail, a continuous recording of the change in geomagnetic declination was begun since April this year, while a survey of three geomagnetic components was also made in May.

• 社団法人 東京地学協会の論文

著者

• 力武 常次

  東京大學 (震研)

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• 地磁氣

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