メラピ型火砕流の発生過程 : 雲仙普賢岳第6ドームでの観測結果  [in Japanese] Generation of Merapi-type Pyroclastic Flows : Observations of the 6th Dome of Unzen volcano, Japan  [in Japanese]

Access this Article

Search this Article

Author(s)

Abstract

Small-scale pyroclastic flows due to the collapse of the lava dome have been frequently generated during the 1991-93 eruption of Unzen Volcano. We have recorded video footages which show the generation of pyroclastic flows during January-March 1992. Two types of phenomena have been observed : deformation of the lava dome due to flowage ; and a sudden discharge of gas and ash through fractures and peeling-off of rock fragments from the surface of cooling lava blocks. Pyroclastic flows were generated only in places on the lava dome where these precursory phenomena were frequently observed.

Journal

  • BULLETIN OF THE VOLCANOLOGICAL SOCIETY OF JAPAN

    BULLETIN OF THE VOLCANOLOGICAL SOCIETY OF JAPAN 38(2), 45-52, 1993

    The Volcanological Society of Japan

References:  5

Cited by:  2

Codes

  • NII Article ID (NAID)
    110003041573
  • NII NACSIS-CAT ID (NCID)
    AN10512786
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    0453-4360
  • NDL Article ID
    3834922
  • NDL Source Classification
    ME41(火山・岩石)
  • NDL Source Classification
    ZM44(科学技術--地球科学--海洋・陸水・火山)
  • NDL Call No.
    Z15-101
  • Data Source
    CJP  CJPref  NDL  NII-ELS  J-STAGE 
Page Top