WEKO3
アイテム
15. 移動觀測用水平動微動計
https://doi.org/10.15083/0000034387
https://doi.org/10.15083/00000343877ff15b02-2f33-4361-8ec0-bd0921cc751d
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
ji0201015.pdf (611.5 kB)
|
|
| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2008-06-06 | |||||
| タイトル | ||||||
| タイトル | 15. 移動觀測用水平動微動計 | |||||
| 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 | 10.15083/0000034387 | |||||
| ID登録タイプ | JaLC | |||||
| その他のタイトル | ||||||
| その他のタイトル | 15. A Portable Horizontal Tromometer | |||||
| 著者 |
岸上, 冬彦
× 岸上, 冬彦 |
|||||
| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 133579 | |||||
| 姓名 | Kishinouye, Fuyuhiko | |||||
| 著者所属 | ||||||
| 著者所属 | 地震研究所 | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | This tromometer constructed with the object of observing with it microseisms of 4sec period at three or more places simultaneously in order to enable investigation into the nature of microseisms. It consists of a horizontal pendulum, suspended with two flat springs, and an optical recording device. The pendulum bob weighs 1550g, the length of the pendulum arm being 20cm. A copper plate, attached to the end of the pendulum, which swings the poles of an MK magnet, serves as an electromagnetic damper. In order to avoid the resonance of the pendulum to microseisms of 4 sec period, the period of free vibration of the pendulum can be made to exceed ten seconds. The geometrical magnification is about 400 when lens of 50cm focal length is used in the optical recording system, and about 800 when the focal length is 100cm. For recording, in place of the recording drum, a sheet of bromide paper, about 56×11.5cm, is wound directly round two wheels which are fixed on an axis of rotation, the rate of rotation being once in ten minutes, the driving power being an AC 100V synchronous motor. The pendulum and the recording apparatus are placed each in a separate wooden box. The sizes of the two boxes are 58×33×27cm and 42×22×25cm and their weights 7 and 4.5kg. respectively. | |||||
| 書誌情報 |
東京帝國大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, Tokyo Imperial University 巻 20, 号 1, p. 215-219, 発行日 1942-03-30 |
|||||
| 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 | AN00029699 | |||||
| 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 | 東京帝国大学地震研究所 | |||||
| 出版者別名 | ||||||
| Earthquake Research Institute, Tokyo Imperial University | ||||||
