Influence of sea condition of the Central and Western Pacific on yellowfin tuna(Thunnus albacores)fishery
SI Wen
YANG Guo
WANG Xuehua
ZHANG Chunling
HU Song
Abstract：The sea condition has a decisive influence on the difficulty of fishery production and the safety of fishing vessels.The meteorological condition is also one of the important inducement for the forma-tion of fishing area and the change of resources.Choosing the yellowfin tuna as the studying object and based on the ten-year meteorological satellite observation and reanalysis data set from 2008 to 2017,in this paper,we systematically analyzed the characteristics of wind and wave in the fishing area.By com-bining with the production data of yellowfin tuna during the same period,we analyzed and evaluated the influence of sea condition on fishery production.The results showed that the average wind speed in the Central and Western Pacific is about 5～6 m/s,the instantaneous wind speed varies between 4 and 6 m/s,the average significant wave height is less than 2 m,and the instantaneous local significant wave height changes from 1 to 3 m.Essentially,the monthly average wind speed and average significant wave height are inversely proportional to the number of fishing operations.The grade of sea condition in most of the fishing area varied between Ⅲ and Ⅳ.And the sea condition of grade Ⅲ in summer and autumn is more suitable for fishing vessel operation than that in winter and spring.
Keywords：wavewindsea conditionYellowfin tunaCentral and Western Pacific
Publication Date：2024-10-28
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：8( 131-138 )