ダウンロード数: 64
このアイテムのファイル:
ファイル | 記述 | サイズ | フォーマット | |
---|---|---|---|---|
a65b0p09.pdf | 2.88 MB | Adobe PDF | 見る/開く |
タイトル: | 諏訪之瀬島における空振観測から考える噴火ハザード |
その他のタイトル: | Eruption Hazards Evaluated from Infrasound Observation at Suwanosejima Volcano |
著者: | 井口, 正人 ![]() 山田, 大志 ![]() |
著者名の別形: | IGUCHI, Masato YAMADA, Taishi |
キーワード: | 諏訪之瀬島火山 空振 火山岩塊 火山灰 Suwanosejima volcano infrasound volcanic bomb volcanic ash |
発行日: | Dec-2022 |
出版者: | 京都大学防災研究所 |
誌名: | 京都大学防災研究所年報. B |
巻: | 65 |
号: | B |
開始ページ: | 97 |
終了ページ: | 106 |
抄録: | Eruption hazard caused by volcanic bombs and volcanic ash at Suwanosejima volcano is examined using infrasound. The explosive eruption, which ejected volcanic bombs to distances around 1 km, occurred during high explosivity with infrasound larger than 200 Pa. The high explosivity accompanied only a low plume (<1500 m). Smaller (<100 Pa) infrasound pulses are successively recorded prior to the high explosivity. The frequent occurrence of infrasound pulses is classified into Type L: 1-9 days duration and minute order time interval and Type S: 1-4 hours duration and second order time interval, and it is regarded as precursor of increase in hazard due to volcanic bombs. Eruptions with plumes higher than 3000 m sometimes occurred. The amplitudes of infrasound onset pulse were much smaller than the explosive eruptions, but tremor-like vibration continued for a longer time (several minutes). Suwanosejima volcano repeats hazardous states of volcanic bombs and volcanic ash alternatively. |
URI: | http://hdl.handle.net/2433/279419 |
関連リンク: | http://www.dpri.kyoto-u.ac.jp/publications/nenpo/ |
出現コレクション: | Vol.65 B |
![](/dspace/image/articlelinker.gif)
このリポジトリに保管されているアイテムはすべて著作権により保護されています。