核安全2025，Vol.24Issue(1)：73-85,13.
某核电厂取水口海域声学散射特征及其应用研究
Research on Acoustic Scattering Characteristics and Their Applications in the Marine Environment of the Nuclear Power Plant's Intake Area
鲁超 1孙伟 2王洪波 2郑腾飞 3郭玉臣 1程宏 1郑碧琪 1刘炜1
作者信息
- 1. 自然资源部宁德海洋中心,宁德 352000||自然资源部海洋生态监测与修复技术重点实验室,上海 200137
- 2. 自然资源部海洋生态监测与修复技术重点实验室,上海 200137||福建宁德核电有限公司,福鼎 355200
- 3. 福建宁德核电有限公司,福鼎 355200
- 折叠
摘要
Abstract
In order to proactively respond to the problem of water intake blockage by marine organisms,a fixed-point acoustic monitoring of marine organisms was conducted in the marine environment of the nuclear power plant's intake area using the digital echo sounder.Through analyzing the characteristics of acoustic scattering changes and combining with interception and salvage data,research on marine organism monitoring and early warning was conducted.The monitoring results indicated that the acoustic scattering presented a Gaussian normal distribution with changes in target strength(TS),and the reverse volume scattering coefficient(Sv)exhibited obvious seasonal and vertical changes.In spring,Sv increased rapidly,reaching its maximum value in May(average 4.37×10-6 m2·m-3);in summer,Sv fluctuated at a high level,with the second-highest Sv occurring in July(average 3.55×10-6 m2·m-3);in autumn and winter,Sv was lower.Sv peaked at the surface and decreased exponentially towards the bottom,with three waves of Sv peaks in May and one batch of Sv peaks in July.After analysis,it is concluded that the timing of the invasion of small,risk-posing marine organisms can be determined by considering the three-dimensional variation trend of Sv.Specifically,the late May and late July periods are identified as the main risk periods during the monitoring period in this study.To improve the accuracy of marine biological monitoring and early warning,it is recommended to increase the use of underwater optical cameras,high-frequency imaging sonar,and to fully utilize dB-differencing method and wide band technology.关键词
核电厂取水口海域/海洋生物/定点声学监测/声学散射特征/声学预警Key words
marine environment of the nuclear power plant's intake area/marine organisms/fixed-point acoustic monitoring/acoustic scattering characteristics/acoustic warning分类
数理科学引用本文复制引用
鲁超,孙伟,王洪波,郑腾飞,郭玉臣,程宏,郑碧琪,刘炜..某核电厂取水口海域声学散射特征及其应用研究[J].核安全,2025,24(1):73-85,13.
