羅臼岳火山における最近2200年間の噴火史 Eruptive History of Rausudake Volcano during the Last 2200 Years

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著者

    • 中川 光弘 NAKAGAWA Mitsuhiro
    • 北海道大学大学院理学研究科地球惑星物質科学専攻 Department of Earth and Planetary Sciences, Graduate School of Science, Hokkaido Universit
    • 吉田 真理夫 YOSHIDA Mario
    • 北海道大学大学院理学研究科地球惑星物質科学専攻:(現)ダイヤコンサルタント(株) Department of Earth and Planetary Sciences, Graduate School of Science, Hokkaido University:(Present)Dia Consultants Co., Ltd.

抄録

Recent eruptive episodes since the last 2200 years of Rausudake volcano, east Hokkaido, are revealed by tephrochronology, geological survey of volcanic edifice and petrology of eruptive products. Eruptive ages of these episodes are estimated by <sup>14</sup>C age dating, presence of wide spread tephras, Ma-b from Mashu volcano (about 1 ka) and Ta-a from Tarumai volcano (AD 1739), and thickness of soil between tephra. We identify three major eruption episodes occurring in ca. 2200, ca. 1400 and 500-700 y. B. P. In each episode, plinian eruption associated with generation of pyroclastic flows and possibly with effusion of lava flows and domes had occurred from the summit area. Volcanic explosive index (VEI) of each eruption is 2-4. Tephra identified as the deposits of ca. 1400 y. B. P, eruption had spread widely and has been found in Kunashiri Island which locates about 60 km east of Rausudake volcano. In Shiretoko Peninsula, east Hokkaido, Mt. Shiretoko-Iouzan has been recognized to be an active volcano. We should note that Mt. Rausudake is also active volcano that repeated its magmatic eruptions at intervals of ca. 800 years.

収録刊行物

  • 火山

    火山 45(2), 75-85, 2000

    特定非営利活動法人 日本火山学会

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被引用文献:  8件中 1-8件 を表示

各種コード

  • NII論文ID(NAID)
    110003041183
  • 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
    5342880
  • 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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