桜島火山における繰り返し相対重力測定（2022年10月および2023年2-3月）

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書誌事項

タイトル別名
  • Repeated Relative Gravity Measurements in Sakurajima Volcano (October 2022 and February-March 2023)

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抄録

Relative gravity values were repeatedly measured at 20 gravity points in and around Sakurajima Volcano in October 2022 and February-March 2023, to monitor spatiotemporal mass variations associated with volcanic activity. The gravity values obtained from 1998 to 2023 showed a clear increase of up to +4.3 μGal/yr in the central part of the volcano. The gravity increase can be explained by the point mass increase of 8 × 10⁹ kg/yr under the center of the volcano at a depth of 3.5 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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詳細情報 詳細情報について

  • CRID
    1050298975368597760
  • NII書誌ID
    AN00027784
  • HANDLE
    2433/286666
  • ISSN
    0386412X
  • 本文言語コード
    ja
  • 資料種別
    departmental bulletin paper
  • データソース種別
    • IRDB

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