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Detection of potential fishing ground for albacore tuna using synoptic measurements of ocean color and thermal remote sensing in the northwestern North Pacific
Zainuddin M.
Geophysical Research Letters
Q1Abstract
To describe potential fishing ground of albacore in relation to dynamics of bio‐physical of their environments, and to clarify impact of El Niño 1998 and La Niña 1999 on tuna fishery, satellite images of SST (TRMM/TMI and NOAA/AVHRR) and SSC (SeaWiFS) together with catch data were used. The 20°C SST and the 0.3 mg m −3 SSC were considered as good indicators of the productive fishing ground. Results showed that a small distance between latitudinal mean position of the SST and the SSC during winter term tended to significantly increase CPUEs. We suggest that albacore fishing grounds highly associated with the confluence of these proxy indicators where the fronts may well develop. These represent the meeting of optimum combination of chlorophyll and temperature fronts which capable of creating potential fishing ground. The proxy indicators appeared to well meet in La Niña 1999 in comparison to El Niño period in 1998.