Sea Experiments of the Underway Conductivity-Temperature-Depth Prototype Made in China  

作　　者：SONG Xiangzhou LI Hui LIN Xiaopei CHEN Xueen GUO Xinshun TIAN Jiwei 

机构地区：[1]Physical Oceanography Laboratory, Ocean University of China, Qingdao 266100, P. R. China [2]National Ocean Technology Center, Tianjin 300112, P. R. China [3]Research Vessel Centre, Ocean University of China, Qingdao 266100, P. R. China

出　　处：《Journal of Ocean University of China》2009年第4期409-415,共7页中国海洋大学学报（英文版）

基　　金：support of the National High Technology Research and Development Program of China (Nos.2006AA09A314 and 2006AA09A307);the National Natural Science Fund (40706006);China’s Na-tional Basic Research Priorities Programmer (2005CB- 422303 and 2007CB411804);the key project of the In-ternational Science and Technology Cooperation Program of China (2006DFB21250);the Ministry of Educa-tion’s 111 Project (B07036)

摘　　要：A new instrument for upper ocean survey, namely the UCTD （Underway Conductivity-Temperature- Depth）, which combines some of the advantages of other underway instruments, is introduced in this paper. The Introduction section presents a description of the construction and function of the UCTD, and the experiments conducted in the South China Sea on board the R/V Dong Fang Hong 2 in July 2007 and August 2008. The UCTD system, with pressure and temperature sensors in the probe, is con- veniently portable, cost-effective and environment-friendly. It is hopefully suitable for future cruises. An intercomparison based on regressing with the experiment temperature data from both SeaBird plus911 CTD and the UCTD showed that the standard deviation is 0.88~C and the correlation coefficient is 0.96, achieving the goals set for the current oceanography uses. In the hydrodynamic experiments, the descending velocities and depths were calculated for different ship speeds. A pulling test was designed with a tensiorneter to measure the magnitude of the pull. The maximal tension of the line was found to be 66.2 kg, which is far lower than the bearing limit of the Hollow Spectra line. Finally, some improvement suggestions are put forward for future experiments and production.A new instrument for upper ocean survey, namely the UCTD (Underway Conductivity-Temperature-Depth), which combines some of the advantages of other underway instruments, is introduced in this paper. The Introduction section presents a description of the construction and function of the UCTD, and the experiments conducted in the South China Sea on board the R/V Dong Fang Hong 2 in July 2007 and August 2008. The UCTD system, with pressure and temperature sensors in the probe, is con- veniently portable, cost-effective and environment-friendly. It is hopefully suitable for future cruises. An intercomparison based on regressing with the experiment temperature data from both SeaBird plus911 CTD and the UCTD showed that the standard deviation is 0.88℃ and the correlation coefficient is 0.96, achieving the goals set for the current oceanography uses. In the hydrodynamic experiments, the descending velocities and depths were calculated for different ship speeds. A pulling test was designed with a tensiometer to measure the magnitude of the pull. The maximal tension of the line was found to be 66.2 kg, which is far lower than the bearing limit of the Hollow Spectra line. Finally, some improvement suggestions are put forward for future experiments and production.

关 键 词：UCTD intercomparison hydrodynamic experiment pulling test 

分 类 号：O35[理学—流体力学] TM911.4[理学—力学]