Abstract
To disclose changes of density of fish larva and other marine organisms in an open water channel before the open net interceptor, this acoustic monitoring point was determined in front of the first open net interceptor in the open seawater channel with considerations to monitoring functions of EK80 scientific echometer to various cold-source organism and the marine organism recovery efficiency of open net interceptor. The beam direction was perpendicular downward. Floating marine organism enters into the interceptor after passing through the acoustic beam, while the quantity of swimming fish larva into the interceptor is smaller under normal marine conditions since they have certain swimming ability.
Highlights
There’s near shore aquiculture area in coastal sea areas surrounding the Taishan Nuclear Power Plant of China Guangdong Nuclear Power Company, which is characteristic of small water depth and large coverage of aquiculture facilities
The cold-source water point is set at the Dajin Island at 10km out of the Taishan Nuclear Power Plant and an about 2.8km long open water channel was built along the west side of Dajin Island
The open water channel becomes an ideal place for activities of larva due to the good shelter effect from the wind
Summary
There’s near shore aquiculture area in coastal sea areas surrounding the Taishan Nuclear Power Plant of China Guangdong Nuclear Power Company, which is characteristic of small water depth and large coverage of aquiculture facilities. The open water channel becomes an ideal place for activities of larva due to the good shelter effect from the wind. There are many interceptors in the open water channel, including plane net and standing net (trash holding net bag), the quantity of marine organisms like small fishes (larva) increases in summer[1], which threatens the safety operation of cold-sourced water uptaking[6]. Resources in the South China Sea [J]. Development Status and Prospects of Tuna and Symlectoteuthis oualaniensis Resources in South China Sea [J].
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