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| ファイル | 記述 | サイズ | フォーマット | |
|---|---|---|---|---|
| a33b1p02.pdf | 646.54 kB | Adobe PDF | 見る/開く |
| タイトル: | 1989年伊豆半島東方沖噴火後の微動観測 |
| その他のタイトル: | OBSERVATION OF MICROTREMORS AFTER THE 1989 ERUPTION OFF EAST COAST OF IZU PENINSULA |
| 著者: | 竹内, 文朗  渋谷, 拓郎 大倉, 敬宏 渡辺, 邦彦 平野, 憲雄 松村, 一男 西上, 欽也 |
| 著者名の別形: | TAKEUCHI, Fumiaki SHIBUTANI, Takuo OHKURA, Takahiro WATANABE, Kunihiko HIRANO, Norio MATSUMURA, Kazuo NISHIGAMI, Kin'ya |
| 発行日: | 1-Apr-1990 |
| 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: | 33 |
| 号: | B-1 |
| 開始ページ: | 13 |
| 終了ページ: | 21 |
| 抄録: | On July 13th. 1989, a volcanic eruption took place east off Ito City, Izu Peninsula. Micro-tremors of unusually large amplitudes with a frequency of about 1 Hz were associated with theeruption. We carried out a temporary observation of microtremors after the eruption, by twosets of array network.Our observation determined the origins of the microtremors to be near the eruption point(Teisi knoll), which hed been located beneath the sea. However the location of the origins seemedto vary from time to time within an area of several kilometers horizontally. This shows that themagma was also activated after the eruption not only near the Teisi knoll but also in adjacentregions.Besides the major portion of the microtremors (1 Hz), some monochromatic tremors ofabout 20 Hz were also observed. |
| URI: | http://hdl.handle.net/2433/72261 |
| 関連リンク: | http://www.dpri.kyoto-u.ac.jp/nenpo/nenpo.html |
| 出現コレクション: | No.33 B-1 |
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