史料からみた桜島火山安永噴火の推移 Reconstruction of the Sequence of the An-ei Eruption of Sakurajima Volcano (A.D. 1779-1782) Using the Historical Records

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著者

    • 井村 隆介 IMURA Ryusuke
    • 鹿児島大学理学部地球環境科学教室 Department of Earth and Environmental Sciences, Faculty of Science, Kagoshima University

抄録

The eruptive sequence of the An-ei eruption of Sakurajima volcano (1779-1782) is revealed by historical records. From the evening of November 7, 1779 (the 29th day of the 9th month in the 8th year of An-ei), Kagoshima and its environs were shaken frequently. At 11 a.m. of the next day, the water in the wells in the island boiled up, spouting at several points and the color of sea became purple. On the noon of the same day, minor white plumes rose up from the Minamidake summit crater. At about 2 p.m., plinian eruption oecurred at the southern upper slope of Minamidake, and several tens of minutes later, at the northeastern flank of Kitadake. The height of eruption column reached about 12000 meters. It is estimated that a pyroclastic flow was generated at 5 p.m. The plinian eruption climaxed from the evening of November 8, to the morning of next day, and later was followed by emission of lava flows. The activity of the southern craters ceased within a few days, but lava emission from northeastern craters lasted for a long period. On November 11, the lava flow from northeastern craters entered into the sea. Since then, submarine explosions occurred repeatedly off the northeastern coast, and it continued to January 18, 1782. Nine small islands produced by this submarine volcanic activity during a year. Submarine explosions caused small tsunamis on August 6 and 15, September 9, October 3 1, November 9, 1780 and April 11, 1781.

収録刊行物

  • 火山

    火山 43(5), 373-383, 1998

    特定非営利活動法人 日本火山学会

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被引用文献:  6件中 1-6件 を表示

各種コード

  • NII論文ID(NAID)
    110003041143
  • NII書誌ID(NCID)
    AN10512786
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    0453-4360
  • NDL 記事登録ID
    4605253
  • NDL 雑誌分類
    ZM44(科学技術--地球科学--海洋・陸水・火山)
  • NDL 請求記号
    Z15-101
  • データ提供元
    CJP書誌  CJP引用  NDL  NII-ELS  J-STAGE 
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