Repeated Relative Gravity Measurements in Sakurajima Volcano (May 2018-February 2019)

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Other Title
  • 桜島火山における繰り返し相対重力測定 (2018年5月-2019年2月)

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Abstract

Relative gravity values were repeatedly measured at 19 gravity points in and around Sakurajima Volcano in May 2018, August-October 2018 and January-February 2019, to monitor spatiotemporal mass variations associated with volcanism. The relative gravity values measured from 2006 to 2019 showed a clear increase in the central part of the volcano by up to +4.7μGal/yr. The gravity increase can be explained by the point mass increase of 1.9×10¹ºkg/yr under the Kita-dake summit at the depth of 3 km below sea level. This result implies that volcanic mass continuously increases under Sakurajima Volcano, even during the quiet period of eruptive activities at the Minami-dake crater.

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Details 詳細情報について

  • CRID
    1050845763870262144
  • NII Article ID
    120006770314
  • NII Book ID
    AN00027784
  • ISSN
    0386412X
  • HANDLE
    2433/244965
  • Text Lang
    ja
  • Article Type
    departmental bulletin paper
  • Data Source
    • IRDB
    • CiNii Articles

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