Feeding herring schools do not react to seismic air gun surveys
Feeding herring schools do not react to seismic air gun surveys
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鲱鱼饲养学校对地震气枪调查没有反应
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
E. Ona
中科院分区：
文献类型：
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作者：
Héctor Peña;N. Handegard;E. Ona
实时行为的鲱鱼群暴露于一个全面的三维地震勘测Vesteralen，挪威北部，使用全向渔业声纳观察。在整个研究期间，青鱼缓慢地逆着主要的东北流游动，并随着水流沿着有一个净位移。减去漂移速度后的平均游泳速度为0.35 m/s，远离气枪阵列方向的平均响应速度为0.22 m/s。没有观察到的变化，游泳速度，游泳方向，或学校的大小，可以归因于传输地震船，因为它接近从27公里的距离，在6小时内。对地震调查的意外缺乏反应被解释为强烈的进食动机、缺乏气枪刺激的突然性以及对地震射击的耐受性增加。
The real-time behaviour of herring schools exposed to a full-scale 3D seismic survey off Vesteralen, northernNorway, was observed using an omnidirectional fisheries sonar. Throughout the study period, the herring swam slowly against the predominant northeast current, with a net displacement along with the current. The mean swimming speed after subtracting the drift velocities was 0.35 m s, and the mean response speed in the direction away from the air gun array was 0.22 m s. No changes were observed in swimming speed, swimming direction, or school size that could be attributed to the transmitting seismic vessel as it approached from a distance of 27 to 2 km, over a 6 h period. The unexpected lack of a response to the seismic survey was interpreted as a combination of a strong motivation for feeding, a lack of suddenness of the air gun stimulus, and an increased level of tolerance to the seismic shooting.