The Design of Ocean Turbulence Measurement with a Free Fall Vertical Profiler

3rd International Conference on Energy Equipment Science and Engineering

Luan, Xin^1 ; Xin, Jia^1 ; Zhu, Tieyi^2 ; Yang, Hua^1 ; Teng, Yuru^1 ; Song, Dalei^3

College of Information Science and Engineering, Ocean University of China, Qingdao

266100, China^1

Qingdao Media Group Ltd., Qingdao

266073, China^2

College of Engineering, Ocean University of China, Qingdao

266100, China^3

关键词: Flow tracking;    Mechanical design;    Noise correction;    Ocean turbulence;    Turbulence dissipation;    Turbulence measurements;    Vertical profilers;    Western Pacific;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/128/1/012125/pdf
DOI  :  10.1088/1755-1315/128/1/012125

来源: IOP

【 摘 要 】

The newly designed instrument Free Fall Vertical Profiler (FFVP) developed by Ocean University of China (OUC) had been deployed in the Western Pacific in March 08, 2017 and succeed to collect turbulence signals about 350-m-deep water. According to the requirements of turbulence measurement, the mechanical design was developed for turbulence platform to achieve stability and good flow tracking. By analysing the Heading, Pitch and Roll, the results suggested that the platform satisfies the requirements of stability. The power spectrum of the cleaned shear signals using the noise correction algorithm match well with the theoretical Nasmyth spectrum and the rate of turbulence dissipation are approximately 10-8W/kg. In general, the FFVP was rationally designed and provided a good measurement platform for turbulence observation.