GEOPHYSICAL INVESTIGATION OF KUCHI-NO-ERABU VOLCANO

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Other Title
  • 口永良部島の地球物理学的調査

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Abstract

Kuchi-no-Erabu-Jima is an active volcano island, which belongs to Kirishima volca-mc belt in Sonthern Kyushu.To obtain the foundamental geophysical data for this active volcano island, thefirst seismic observation and geomagnetic survey were carried out for about three weeksin Aug. 1966.On the 22th of Nov. 1966, the volcanic eruption happened at the top of Shindakein this island. Then, the same observation and survey were repeated from Nov. to Dec.1966, in order to examine the variations of geomagnetic anormaly and of the seismicitiesbefore and after the eruption.The main results are as follows.1. The significant difference between the results of the first and the second geomag-netic surveys could not be found out at all measured points except near the crater, where a great deal of volcanic ejecta was newly deposited.2. B-type earthquakes, which were not detected in the first observation at all, werefairy observed after eruption. It was confirmed by the tripatite seismic observation thatthese earthquakes originated around Shindake crater.

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Details 詳細情報について

  • CRID
    1050282677274663552
  • NII Article ID
    120001076757
  • NII Book ID
    AN00027809
  • ISSN
    0386412X
  • HANDLE
    2433/69408
  • Text Lang
    ja
  • Article Type
    departmental bulletin paper
  • Data Source
    • IRDB
    • CiNii Articles

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