Development of in-situ Observation technique for Hydrothermal Deposit using Fluorescent method

2014 Fiscal Year Final Research Report

• Project/Area Number: 24360365
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Naval and maritime engineering
• Research Institution: National Maritime Research Institute
• Principal Investigator: SASANO Masahiko 独立行政法人海上技術安全研究所, その他部局等, 主任研究員 (00392689)
• Co-Investigator(Kenkyū-buntansha): YAMAMOTO Joji 独立行政法人海上技術安全研究所, その他部局, 研究員 (00586703) ; NAKAJIMA Yasuharu 独立行政法人海上技術安全研究所, その他部局, 研究員 (30344237) ; FURUSHIMA Yasuo 独立行政法人海洋研究開発機構, その他部局, 研究員 (90359159)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 深海 / 現場観測 / 蛍光 / レーザー / LED / 生物調査 / 鉱物調査

Outline of Final Research Achievements

Current "in-situ" observation technologies for deep-sea hydrothermal deposits are insufficient, despite these areas are remarkable such as rich deep-sea ecosystems, mineral development sources, etc.
In this study, two prototypes of the "in-situ" observation system have been developed and have been evaluated their performances; (1) a UV-LED light for fluorescent image observation of deep sea bed, (2) a violet laser spectrometer for fluorescent spectrum measurements of deep sea bed.
Additionally, the UV-LED light, (1), has been installed on a ROV and has been used for fluorescent observation successfully in the hydrothermal deposit in depth of roughly 1,000 m. In this "in-situ" observation, it is confirmed that each deep-sea species has inherent fluorescent colors by UV irradiation. It implies that auto-identification of deep-sea species by fluorescent colors is feasible in the future.

Free Research Field

海洋レーザー計測