Acoustic Survey and Research on Fishery Resources in the South Yellow Sea Reef Area

2017.4 The project team conducted an acoustic survey of fishery resources in the fish reef area of the South Yellow Sea using a scientific fish finder (EY60, SIMRAD) to obtain acoustic images of biological resources in the sea area passed by the survey vessel. In data processing, this survey used professional fishery resources acoustic survey data processing software (ECHOVIEW 7.9, MYRIAX, AUSTRIA), in particular, the software has a special background noise processing module, according to De Robertis, Higginbottom's research results of the preparation. The results of this survey showed that the average NASC in the target area of the reef zone was 42.85 m^2/nmi^2, with the largest NASC of 249.47 m^2/nmi^2 in one section, and 28.56 m^2/nmi^2 in the southernmost control area, with the smallest NASC of 25.11 m^2/nmi^2 and the largest of 35.37 m^2/nmi^2.