火山地域における火山泥流，泥流，土石流の表現方法に関する考察

DOI
  • 西本 晴男
    筑波大学大学院生命環境科学研究科持続環境学専攻

書誌事項

タイトル別名
  • Discussion on the method of expressing flow of volcanic materials in volcanic areas

抄録

Volcanic disasters take diverse forms and volcanic eruptions are difficult to predict. In order to utilize information to prevent volcanic disasters it is undoubtedly important for inhabitants, local authorities and disaster professionals to have a good understanding of each other. To advance this mutual understanding, volcanic phenomena should be described in a unified manner. The terms “volcanic mudflow”,“mudflow” and “debris flow ” all refer to phenomena in which a flow with densely mixed pyroclastic materials and water runs down on a mountainside. However, these three terms are still controversial in their meanings. In this paper the author abstracts descriptions on “volcanic mudflow”,“mudflow” and “debris flow” from historical literature of volcanology, Sabo engineering, and related fields in order to clarify the history of usage of these terms. Their appropriate usages are discussed from the viewpoint of social demands for volcanic disaster prevention while considering the present efforts actually being made in Japan. As a result, it is proposed that the phenomenon directly caused by volcanic eruptions should be called “volcanic mudflow” and that the phenomenon caused by rainfall after eruptions should be called “debris flow” or “mudflow”, when these terms are used in the field of volcanic disaster prevention. However, the way of defining volcanic eruptions or volcanic activities with tangible expressions still needs further discussion. The phenomena triggered by the direct extrusion of muddy materials from a crater should also be discussed so that they can be categorized depending on the type of volcanic mudflow involved.

収録刊行物

キーワード

詳細情報 詳細情報について

  • CRID
    1390001205479183744
  • NII論文ID
    130004716576
  • DOI
    10.11475/sabo.63.2_26
  • ISSN
    21874654
    02868385
  • 本文言語コード
    ja
  • データソース種別
    • JaLC
    • CiNii Articles
  • 抄録ライセンスフラグ
    使用不可

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