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基于2011年度夏秋季中国南极磷虾渔业科学观察员在大型拖网加工船“开欣轮”上收集的影像资料(作业水域为南奥克尼群岛周边海域,时间为2011年3月6日—4月21日),对该水域南极磷虾集群的时空分布特征进行了分析。结果表明:南极磷虾群在南奥克尼群岛西北部海域出现的次数较为集中,主要出现在60°00’S—60°15’S,45°30’W—46°30’W区域内;不同水层中,磷虾群主要呈块状分布,0～50m和50～100m水层集群类型极为相似(PSI=92.3),散点状、块状和带状磷虾群在0～50m水层出现比例最高,且块状磷虾群和带状磷虾群在各水层中的分布极为相似(PSI=94.4);1:00—18:00南极磷虾群出现频率较高,随后比例开始下降,19:00—20:00出现频率最低。
Based on the image data collected by the scientific observers of the Chinese Antarctic krill fisheries in the large trawling ship Kai Takin in the summer and autumn of 2011 (the waters around South Orkney Islands were collected from March 6, 2011 - April 21), analyzed the temporal and spatial distribution of Antarctic krill assemblages in this area. The results showed that the Antarctic krill population appeared more concentrated in the northwestern South Orkney Islands, mainly in the region of 60 ° 00’S-60 ° 15’S, 45 ° 30’W-46 ° 30’W; different aquifers (Ps = 92.3). The proportions of scattered, massive and zonal krill populations in the 0-50 m water layer ranged from 0 to 50 m and from 50 to 100 m. (PSI = 94.4). The occurrence frequency of Antarctic krill was high at 1: 00-18: 00 and then began to decline. 19: 00-20: 00 The lowest frequency of occurrence.