Potential impact of noise from underwater tunnel during metros operation on aquatic organisms
QIAN Jinyu, LIN Danqing, XING Binbin, GONG Dehua, GUO Jianlei1, LIU Yingtai, LI Ziming,YIN Leiming
1.College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China; 2.Experimental Station of Fishery Resources and Environment Science in the Lower Reaches of the Yangtze River, Ministry of Agriculture and Rural Affairs, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China
Abstract: To study the potential impact of metro noise in the underwater tunnel on aquatic animals, Nanjing Yangtze Finless Porpoise Provincial Nature Reserve was select as the research object to measure the underwater noise by anchoring boat.The hydro-acoustic measuring system(20-100 000 Hz)was used to record the underwater sounds during the operation of Nanjing Metro Line 10.The acoustic signals were collected by AQH hydrophone(sensitivity：-206 dB re 1 V/μPa, Japan), and the data ware analysis by spectrum and sound pressure level(SPL，dB re 1 μPa).The results showed that in 5 m underwater, background noise was primarily composition of 100 Hz water noise and 1 000 Hzwind-dependent noise without metro train passing by; SPL was found to be(131.48±0.91)dB re 1 μPa and increased to 12.18 dB in real-time with one metro train passing by; the SPL of(136.82±2.63)dB re 1 μPa and increased to 12.20 dB in real-time with two metros train passing by.The metro noise frequency was shown to be concentrated from 20 Hz to 5 000 Hz, and the 1/3 octave analysis showed that the metro noise main peak frequency was concentrated at 63 Hz and 80 Hz.The findings indicate that the metro noise frequency is concentrated at 20 Hz to 5 000 Hz and the metro noise main peak frequency is concentrated at 63 Hz and 80 Hz, the low frequency width band is covering the hearing range of fish, and that metros noise frequency may have a potential impact on freshwater fish.
钱金玉, 蔺丹清, 邢彬彬, 龚德华, 郭建磊, 刘英泰, 李子铭, 殷雷明. 江底隧道地铁运营期水下噪声及其对水生生物的影响[J]. 大连海洋大学学报, 2022, 37(2): 329-337.
QIAN Jinyu, LIN Danqing, XING Binbin, GONG Dehua, GUO Jianlei, LIU Yingtai, LI Ziming, YIN Leiming. Potential impact of noise from underwater tunnel during metros operation on aquatic organisms. Journal of Dalian Ocean University, 2022, 37(2): 329-337.
2022, Vol. 37 
