During a survey of Bering Sea pollock resources from June to August,1993,a large concentration of age zero pollock was discovered in the Aleutian Basin by using echointegration/midwater trawl survey method.

• 1993年夏季白令海狭鳕资源调查期间，作者等应用声学/拖网评估调查方法，首次发现阿留申海盆区有大量当年生狭鳕幼鱼分布。