The Original Study of Fishing Ground Formation by Satellite Remote Sensing

Abstract

At present, Japan Fisheries Information Service Center (JAFIC) makes the Satellite Aided Oceanographic Condition Charts with NOAA AVHRR data and sends these charts to fishing boats in ocean. Making of the Satellite Aided Oceanographic Condition Charts significantly depends on human experts knowledges and experiences. It was turned out that the expert system is useful and effective for extraction of ocean conditions from sea surface temperature data.
The JAFIC developed a discriminant prediction system of fishing ground formation using the NOAA AVHRR data (1982-1985). The discriminant prediction formula is as follows:
F=0.32X₁ +0.36X₂ +0.88X₃
If F>0, the fishing ground will be formed and F<0, the fishing ground will be not formed. Then the JAFIC applied this discriminant formula to the MOS-1 VTIR data.
Besides, we investigated the relationship between fine structure of warm eddy and fishing ground using the MOS-1 VTIR data with assistance of aircraft data. We obtained interesting results as follows.
(1) By use the simultaneous aircraft data, we know that many schools of sardine are distributed at the head of warm streamer.
(2) It seems that the warm streamer is useful for the transfer of schools toward for the north.