Research on Prediction of Volcanic Eruptions by Seismic Method

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  • 地震学的手法による噴火予知研究
  • ジシンガクテキ シュホウ ニヨル フンカ ヨチ ケンキュウ

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Abstract

History of instrumental observation of volcanic earthquakes was initiated in the middle of 19th Century by L.Palmieri at Vesuvio Observatory. F. 0mori’s vigorous observation was made by Omori tromometer deviced by himself firstly at Usu Volcano in 1910 and at Asama and Sakura-zima successively. T.A. Jaggar's observation at Kilauea started also in 1912 and was found the continuous vibration of volcanic origin. Following to these vanguards, with the advancement of instrumental technique, relationship between volcanic earthquakes/volcanic tremors and eruptive activity has been investigated precisely by T.Minakami and S.Sassa. National project of the prediction of volcanic eruptions started since 1949 and modernized seismic equipments with telemetering system and data processing units were introduced at university’s volcano observatories. Plan of installation of seismographs at several active volcanoes are in progress by Japan Meteorological Agency as well as the replacement of the old seismographs at the existed volcano observatories.

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