Cite this paper:
Liu Yu, Zheng Quanan, Li Xiaofeng. Relationship between neon flying squid Ommastrephes bartramii fishery distribution patterns and eddy kinetic energy in Northwest Pacific Ocean[J]. Haiyang Xuebao, 2020, 42(2): 44-51

Relationship between neon flying squid Ommastrephes bartramii fishery distribution patterns and eddy kinetic energy in Northwest Pacific Ocean

Liu Yu1, Zheng Quanan2, Li Xiaofeng1
1. College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China;
2. Department of Atmospheric and Oceanic Science, University of Maryland, College Park 20742, USA
Abstract:
In this study, the eddy kinetic energy (EKE) derived from satellite altimeter data and the fishery data during 2010−2016 obtained from the Chinese Squid-jigging Science and Technology Group, are used to analyze the spatial and temporal relationship between the Kuroshio Extension EKE and fishing ground distribution. The results show that the catch per unit effort (CPUE) is negatively related to the EKE of fishing ground in the range of 0–1 500 cm2/s2, the most suitable EKE is between 25–150 cm2/s2. Furthermore, the Kuroshio Extension EKE decreasing from west to east, is correlated with CPUE with the high correlation coefficient of 0.81. According to the longitudinal range, the Kuroshio Extension is divided into four sub-areas, and the monthly average latitudes of fishing ground centroids respond to the sub-areas with the highest EKE in the same month. When the distance (DIST) from fishing grounds to the Kuroshio Extension in the range of 800–1 000 km, CPUE increases with the DIST, and the most suitable DIST from August to October is between 850−950 km. When the Kuroshio Extension path has complicated meanders, EKE is high, while the CPUE is reduced and the fishing grounds move northward.
Key words:    eddy kinetic energy    Ommasterphes bartramii    fishing ground    CPUE    Kuroshio Extension    Northwest Pacific Ocean   
Received: 2019-01-06   Revised: 2019-05-10
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Articles by Liu Yu
Articles by Zheng Quanan
Articles by Li Xiaofeng
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