| Item type |
紀要論文 / Departmental Bulletin Paper(1) |
| 公開日 |
2021-08-18 |
| タイトル |
|
|
タイトル |
自律型新方式海底地震計の開発試験に向けた : 深海用小型ビデオカメラの開発 |
|
言語 |
ja |
| タイトル |
|
|
タイトル |
Development of a Compact Deepsea Video Camera for Testing the New Autonomous Ocean Bottom Seismometer Development |
|
言語 |
en |
| 言語 |
|
|
言語 |
jpn |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Broadband ocean bottom seismometer |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Penetrator |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Video camera |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
High pressure test |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Sapphire crystal glass |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
LED |
| 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 |
10.15083/0002000512 |
|
ID登録タイプ |
JaLC |
| 著者 |
塩原, 肇
杉岡, 裕子
太田, 豊宣
大西, 信人
|
| 著者所属 |
|
|
言語 |
ja |
|
著者所属 |
東京大学地震研究所海半球観測研究センター |
| 著者所属 |
|
|
言語 |
ja |
|
著者所属 |
神戸大学海洋底探査センター |
| 著者所属 |
|
|
言語 |
ja |
|
著者所属 |
有限会社テラテクニカ |
| 著者所属 |
|
|
言語 |
en |
|
著者所属 |
Ocean Hemisphere Research Center, Earthquake Research Institute, The University of Tokyo |
| 著者所属 |
|
|
言語 |
en |
|
著者所属 |
Kobe Ocean-Bottom Exploration Center, Kobe University |
| 著者所属 |
|
|
言語 |
en |
|
著者所属 |
TIERRA TECNICA Ltd. |
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
The ERI’s broadband ocean bottom seismometer (BBOBS) of a free-fall and self pop-up type has been used since 1999. As the BBOBS is located on the seafloor, the large BBOBS housing is affected by the bottom current, the noise level of horizontal component is higher than that of the land stations. To avoid this problem, a BBOBS with a penetrator sensor (BBOBS-NX) was developed in 2009, which requires the aid of a remotely operated vehicle (ROV) in deployment and recovery. Although the data quality becomes better, the chance of observations is less. Therefore, the new type, autonomous type BBOBS-NX is expected. But there was a problem of large tilt at landing on the seafloor in about 50 % of trials, which exceeded the acceptable limit of the broadband sensor used. At the start of the development for the new autonomous type BBOBS-NX (NX-2 G), it is necessary to understand how and when the tilt at landing of the BBOBS-NX occurred without disturbing its behavior. For this purpose, we made two small underwater instruments that can be attached outside of the BBOBS-NX to enable the retrieval during its deployment by using the ROV. One of them is the deep-sea video camera (DSCAM) that can be used to watch the landing of the BBOBS-NX, and another is the Micro-Electro-Mechanical-System (MEMS) acceleration logger to measure the tilting of the BBOBS-NX during its descent in the water. In this paper, we focused on the development and results of the DSCAM. It has been used three times already in real operations and played the original role. Moreover, it also worked to monitor operations of the autonomous deployment of the NX-2 G. |
|
言語 |
en |
| 内容記述 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
＜論説＞ |
|
言語 |
ja |
| 書誌情報 |
ja : 技術研究報告
巻 26,
p. 1-9,
発行日 2020
|
| ISSN |
|
|
収録物識別子タイプ |
PISSN |
|
収録物識別子 |
13426486 |
| 書誌レコードID |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA11602838 |
| 出版者 |
|
|
出版者 |
東京大学地震研究所 |
|
言語 |
ja |
| 出版者別名 |
|
|
|
en |
|
|
Earthquake Research Institute, the University of Tokyo |
26_001-009.pdf (9.4 MB)
