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アイテム
底層流による海底地震計周囲の渦の発生の実験的観察
https://doi.org/10.15083/0000033087
https://doi.org/10.15083/0000033087ab62999e-e722-4ae8-9576-349d86031836
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
ji0551008.pdf (1.8 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2008-05-30 | |||||
| タイトル | ||||||
| タイトル | 底層流による海底地震計周囲の渦の発生の実験的観察 | |||||
| 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 | 10.15083/0000033087 | |||||
| ID登録タイプ | JaLC | |||||
| その他のタイトル | ||||||
| その他のタイトル | Experimental Results of Vortex Generation around Ocean-Bottom Seismograph due to Bottom Current | |||||
| 著者 |
笠原, 順三
× 笠原, 順三× 南雲, 昭三郎× 是沢, 定之× 大工原, 保× 宮田, 秀明 |
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| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 129037 | |||||
| 姓名 | Kasahara, Junzo | |||||
| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 129038 | |||||
| 姓名 | Nagumo, Shozaburo | |||||
| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 129039 | |||||
| 姓名 | Koresawa, Sadayuki | |||||
| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 129040 | |||||
| 姓名 | Daikuhara, Tamotsu | |||||
| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 129041 | |||||
| 姓名 | Miyata, Hideaki | |||||
| 著者所属 | ||||||
| 著者所属 | 地震研究所 | |||||
| 著者所属 | ||||||
| 著者所属 | 東大工学部船舶工学科 | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Oscillational noise has frequently been observed by pop-up ocean bottom seismometers (OBS). The major cause of the noise is supposed to be bottom currents. When the relationship between current speed and shape of the OBS was examined experimentally, Karman vortexes were found to develop about the L-shaped frames, the pressure case of the radio transmitter and the antenna of the transmitter when the current exceeded 20 cm/sec. The Karman vortexes which formed about the antenna were found to be the most undesirable. The frequency of the antenna oscillation was from 3.20 to 3.70 Hz for current speeds of 18 cm/sec and 30 cm/sec, and the amplitude was large enough to saturate the seismometers in the OBS. The frequency was nearly equal to the resonance frequency of the antenna in air and half of the excitation frequency of the Karman vortex. This suggests that the oscillation is the result of resonance in the antenna due to an external force. The use of a fin was effective in reducing the oscillation. | |||||
| 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 55, 号 1, p. 169-182, 発行日 1980-08-25 |
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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 | ||||||
