| Project/Area Number |
25550002
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | Hokkaido University |
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Principal Investigator |
Aoki Shigeru 北海道大学, 低温科学研究所, 准教授 (80281583)
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| Co-Investigator(Renkei-kenkyūsha) |
ONO Kazuya 北海道大学, 低温科学研究所, 技術専門職員 (40396320)
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| Research Collaborator |
ICHIKAWA Masaaki
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 環境分析 / 海洋機器開発 / 極域海洋 / 環境変動 / モニタリング / 極地 / モニタリング（ﾘﾓｰﾄｾﾝｼﾝｸﾞ以外） / 海洋観測ブイシステム / 南極海 |
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| Outline of Final Research Achievements |
Based on state-of-the-art technologies like buoyancy control and satellite communication, this study aims to develop a tethered-buoy system for monitoring vertical profiles of oceanic environmental variables, which can be available in the ice-covered oceans. Field experiments of a prototype buoy were conducted for the total period of seven months off Shiretoko, Okhotsk Sea. The sensor buoy worked successfully for the programmed operations such as ascending/descending motions, controlling parking depths, data transfer through satellite system, endurance over half year period, and stop ascending near the surface in the ice covered condition. Current measurements clarified the limit of ambient current speed that allows a buoy to ascend to the surface. With these conditions surveyed and confirmed, we have established the technological basis for further variable conditions in the real ice oceans.
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