Carbon Dioxide Degassing by Advective Flow from Usu Volcano, Japan

DOI Web Site PubMed 被引用文献16件
  • P. A. Hernández
    Laboratory for Earthquake Chemistry, Graduate School of Science, University of Tokyo, Bunkyo-Ku 113-0033, Tokyo, Japan.
  • K. Notsu
    Laboratory for Earthquake Chemistry, Graduate School of Science, University of Tokyo, Bunkyo-Ku 113-0033, Tokyo, Japan.
  • J. M. Salazar
    Environmental Research Division, Instituto Tecnológico y de Energı́as Renovables, 38611 Granadilla de Abona, Santa Cruz de Tenerife, Spain.
  • T. Mori
    Laboratory for Earthquake Chemistry, Graduate School of Science, University of Tokyo, Bunkyo-Ku 113-0033, Tokyo, Japan.
  • G. Natale
    Laboratory for Earthquake Chemistry, Graduate School of Science, University of Tokyo, Bunkyo-Ku 113-0033, Tokyo, Japan.
  • H. Okada
    Usu Volcano Observatory, Hokkaido University, Sohbetsu-cho, Hokkaido 052-0103, Hokkaido, Japan.
  • G. Virgili
    WEST Systems, Via Molise 3, 56025 Pontedera (PI), Italy.
  • Y. Shimoike
    Laboratory for Earthquake Chemistry, Graduate School of Science, University of Tokyo, Bunkyo-Ku 113-0033, Tokyo, Japan.
  • M. Sato
    Laboratory for Earthquake Chemistry, Graduate School of Science, University of Tokyo, Bunkyo-Ku 113-0033, Tokyo, Japan.
  • N. M. Pérez
    Environmental Research Division, Instituto Tecnológico y de Energı́as Renovables, 38611 Granadilla de Abona, Santa Cruz de Tenerife, Spain.

書誌事項

公開日
2001-04-06
DOI
  • 10.1126/science.1058450
公開者
American Association for the Advancement of Science (AAAS)

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説明

<jats:p> Magmatic carbon dioxide (CO <jats:sub>2</jats:sub> ) degassing has been documented before the 31 March 2000 eruption of Usu volcano, Hokkaido, Japan. Six months before the eruption, an increase in CO <jats:sub>2</jats:sub> flux was detected on the summit caldera, from 120 (September 1998) to 340 metric tons per day (September 1999), followed by a sudden decrease to 39 metric tons per day in June 2000, 3 months after the eruption. The change in CO <jats:sub>2</jats:sub> flux and seismic observations suggests that before the eruption, advective processes controlled gas migration toward the surface. The decrease in flux after the eruption at the summit caldera could be due to a rapid release of CO <jats:sub>2</jats:sub> during the eruption from ascending dacitic dikes spreading away from the magma chamber beneath the caldera. </jats:p>

収録刊行物

  • Science

    Science 292 (5514), 83-86, 2001-04-06

    American Association for the Advancement of Science (AAAS)

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