Long-term measurement and research on the flow rate in Zhoushan, China

[摘要] In order to understand the flow rate of the new copper cage to be put into the Zhoushan sea area, this study used a point Doppler flowmeter to measure the flow velocity of the deep-water cage culture in Zhujiajian, Zhoushan, Zhejiang Province for a long time, and measured the sea area as a regular half-day tide, and finally measured the results show that the flow rate shows a significant periodic change. Maximum flow rate is within 3-4 hours before and after the climax, generally between 1.2 m/s and 1.6 m/s, and then the flow rate is rapidly reduced to about 0.2 m/s. At the arrival of the low tide, the flow rate will have a small increase which reached about 0.5 m / s, after the low tide, slightly decreased, until the new climax came. The maximum flow rate during the measurement occurred at the moment when the tide occurred in the month, which was 1.983 m/s (average flow rate of 30 s).

[发布机构] Key Laboratory of Oceanic and Polar Fisheries, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China^1

[学科分类] 环境科学（综合）

[关键词] Average flows;Copper cages;Deep Water;Doppler flowmeters;Long-term measurements;Maximum flow rate;Periodic changes;Zhejiang Province