書誌事項
- タイトル別名
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- Sequence of the 2000 Eruption, Usu Volcano(Special Section：The 2000 Eruption of Usu Volcano)
- 有珠山2000年噴火の推移
- ウスザン 2000ネン フンカ ノ スイイ
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The 2000 eruption of Usu volcano started at 1 : 07 PM, March 31, 2000 following 3-and-a-half days precursory activities of earthquakes and ground cracking. Initial explosion took place at the western lower slope of the volcanic edifice discharging ash plume. Ballistics were thrown westward at least 1.2 km away from the source. More than 60 explosion craters were formed on the following 3 weeks. Type of the eruption cloud was similar to geyser discharging hot water vapor and smaller amount of ash. Hot lahars were directly discharged from some of the craters. A small-scale and fiat-topped cryptodome was formed during this stage. Graben-like fault swarms were formed above the cryptodome. Explosive activity had gradually declined since the later half of April. Bursting-type explosions with air shock wave frequently occurred at the water-saturated crater floors. Geothermal activity became clear on and around the cryptodome since middle May. Geothermal activity had still continued and water vapor was being discharged from three craters in summer time of 2001.
収録刊行物
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- 火山
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火山 47 (3), 105-117, 2002
特定非営利活動法人 日本火山学会
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詳細情報 詳細情報について
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- CRID
- 1390001204304997888
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- NII論文ID
- 110003041245
- 10009970334
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- NII書誌ID
- AN10512786
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- ISSN
- 21897182
- 04534360
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- NDL書誌ID
- 6214050
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可