Analysis of Sea Surface Temperature and Chlorophyll-a Distribution Using Remote Sensing Application in Coastal Bulukumba Regency

Abstract

Bulukumba regency has water rich in biological resources, especially types of marine fish that have the potential for export, such a large pelagic fish, namely tuna, skipjack, mackerel, etc. pelagic fish habitat is generally influenced by oceanographic parameters such a sea sueface temperature and chlorophyll-a coccentration (Laevastu and Hayes, 1981; Gunarso,198). This study aims to analyze the distribution of sea surface temperature (SST) and chlorophyll-a in Bulukumba waters using remote sensing technology. As primary indicators for detecting potential pelagic fishing areas, SST and chlorophyll-a parameters were analyzed using Aqua MODIS satellite imagery data. The imagery data was processed using SeaDas and ArcGIS software to produce maps of temperature distribution and chlorophyll-a concentration during the study period. The analysis results show that the sea surface temperature distribution pattern ranges between 28–31°C, and chlorophyll-a concentration varies between 0.2–0.8 mg/m³. Zones with suitable temperature and chlorophyll-a tend to indicate the presence of pelagic fisheries potential. Validation with field data shows a high agreement between actual fishing locations by fishermen and the results of image interpretation. These findings demonstrate that remote sensing is highly effective in providing marine spatial information to support efficient and sustainable fishing activities in coastal areas.