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14. 櫻島噴火に伴ふ短週期火山微動
https://doi.org/10.15083/0000034304
https://doi.org/10.15083/0000034304f943a1cf-9cc2-4574-a71c-b621b59753c7
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
ji0241014.pdf (706.1 kB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2008-06-06 | |||||
| タイトル | ||||||
| タイトル | 14. 櫻島噴火に伴ふ短週期火山微動 | |||||
| 言語 | ja | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| 資源タイプ | ||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||
| タイプ | departmental bulletin paper | |||||
| ID登録 | ||||||
| ID登録 | 10.15083/0000034304 | |||||
| ID登録タイプ | JaLC | |||||
| その他のタイトル | ||||||
| その他のタイトル | 14. Volcanic Tremors of Short Periods at the Eruption of Sakura-jima | |||||
| 著者 |
永田, 武
× 永田, 武× 淺田, 敏× 鈴木, 次郎 |
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| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 133374 | |||||
| 姓名 | Nagata, Takesi | |||||
| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 133375 | |||||
| 姓名 | Asada, Tosi | |||||
| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 133376 | |||||
| 姓名 | Suzuki, Ziro | |||||
| 著者所属 | ||||||
| 著者所属 | 地震研究所 | |||||
| 著者所属 | ||||||
| 著者所属 | 地球物理學敎室 | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Durling the eruption of Sakura-jima, we observed volcanic tremors of short periods by means of electromagnetic transducers. The magnification of instruments is about 110,000 times for the vibration of 20 cycles. The results of observation are as follows. (i) The frequency of waves is about 20 cycles and kept constant during the observation. This predominant period seems to be independent upon locality, as far as a few places we are concerned. (ii) The velocity is determined by two methods. The one is the determination of time lag between the arrival of wave group and sound of detonation, and the other the determination of phase difference of waves recorded by two transducers which are set about 7 meters distant from each other in the direction to the crator. The results of two methods fairly coincide with each other, the value of velocity being about 300m/sec. (iii) The waves are dispersive. (iv) We observed also two kinds of waves having the frequency of 5 cycles and about 80 cycles. (v) The variation in amplitude of main waves is also observed. It will be concluded from these results that the main waves are a kind of surface waves generated at the crator by the shock of eruption. | |||||
| 書誌情報 |
東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo 巻 24, 号 1-4, p. 185-192, 発行日 1948-06-30 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 00408972 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AN00162258 | |||||
| フォーマット | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | application/pdf | |||||
| 日本十進分類法 | ||||||
| 主題Scheme | NDC | |||||
| 主題 | 453 | |||||
| 出版者 | ||||||
| 出版者 | 東京大学地震研究所 | |||||
| 出版者別名 | ||||||
| Earthquake Research Institute, University of Tokyo | ||||||
