Construction of the microstructure measurement system using common device used in ocean observations

Research Project

Project/Area Number	23710002
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Multi-year Fund
Research Field	Environmental dynamic analysis
Research Institution	The University of Tokyo
Principal Investigator	NAGASAWA Maki 東京大学, 大気海洋研究所, 技術専門職員 (60447448)
Research Collaborator	YASUDA Ichiro 東京大学, 大気海洋研究所, 教授 (80270792) GOTO Yasutaka 東京大学, 大気海洋研究所
Project Period (FY)	2011-04-28 – 2015-03-31
Project Status	Completed (Fiscal Year 2014)
Budget Amount *help	¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000) Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000) Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000) Fiscal Year 2011: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords	乱流計測
Outline of Final Research Achievements	Since microstructure measurements of velocity shear are very sensitive and fragile to noise from instruments,measurements have been performed with free-fall instruments whose vibrations to generate noise are minimized. Because of the difficulty in microstructure measurements, turbulence observations have been quite limited. In order to efficiently obtain much more turbulence data, we propose a new method in which a microstructure profiler is attached to a CTD-frame, which is a common device used in ocean observations.　Comparing the turbulence intensity measured using this method with which from free-fall instruments, we evaluate the performance of microstructure measurements using instruments attached to a CTD-frame.