渔业科学进展2011，Vol.32Issue(2)：47-52,6.
大黄鱼和许氏平鱼由声反射特征与体重和体长关系的研究
The relationship between acoustic backscattering property and weight and body length of big yellow croaker and black rockfish
摘要
Abstract
The aim of this study was to establish the relationship between target strength (TS), dorsal-aspect reflections section and weight, body length of yellow croaker Pseudosciaena crocea (Pc) and black rockfish Sebastes schlegeli (Ss). The results showed that both the weight and body length had the quantitative relationship with the target strength. At 50 kHz, the target strength of different body parts of Pc was between -32. 85 and -58. 01 dB; at 200 kHz, it was -29.3～56. 99 dB. For the Ss, it was -31.74～-75.87 dB, and -31. 74～-74. 75 dB, respectively. At both 50 kHz and 200 kHz, the TS of the fish belly was maximal and that of the fish tail was minimal. The correlation between the mean lateral TS and the length was positive, for both 50kHz and 200 kHz. At 50 kHz： TSPc=24.8 logL (cm) -73.9(side direction) ; at 200 kHz：TSPc=23.9 logL (cm)-71.3(side direction), and at 50 kHz: TSs =25.7 logL (cm) -69.16 (side direction) ; at 200 kHz: TSSs=26. 4 logL (cm)-70.8 (side direction). The results of the experiments are expected to provide data support for the design of underwater acoustic monitoring instruments.关键词
目标强度/反射声截面/深水网箱/许氏平鲉/大黄鱼Key words
Target strength/ Reflecting acoustic pressure/ Deepwater net-cage/Big yellow croaker/ Black rockfish分类
农业科技引用本文复制引用
栾洋,关长涛,石晓天,谌志新..大黄鱼和许氏平鱼由声反射特征与体重和体长关系的研究[J].渔业科学进展,2011,32(2):47-52,6.基金项目
国家863计划课题(2006AA100302)和国家科技支撑计划课题(2006BAD09A13)共同资助 （2006AA100302）
