Association study between thermal front phenomena and bali sardinella fishing areas in bali strait

Abstract

Thermal front has been widely used as a parameter for determining fishing zones. This study aimed to determine the thermal front distribution and to analyze its association with the Bali Sardinella fishing zones in the Bali Strait. Thermal front generated using sea surface temperature (SST) from Aqua MODIS imagery. Meanwhile, the fishing point data of Bali Sardinella were collected to validate our analysis results. The data were analyzed into Spatio-temporal information. The main facts that stand out are that the thermal front was predominantly found in the peak of first (April) and second (September) transitional season, which was the peak season for the thermal front to occur in a year. The least of the thermal front occurred in the South-west monsoon. The linear relationship was found when the peak of thermal front occurrence compared to the number of catch yields. Based on matching distance analysis, the maximum distance used (twenty kilometres buffer) show 36 matching points from 101 data compared or at range 35.6%. In conclusion, there is a linear relationship between the thermal front parameter and catch yield. It is still used to predict the fishing zone, even though the correlation is not significantly found.