Distribution and oceanography characteristic of light fishing in the Java Sea

Abstract

Light fishing location obtained from visible infrared imaging radiometer suite (viirs) boat detection (VBD) and satellite-based oceanographic data of chlorophyll-a concentration (chl-a), sea-surface temperature (SST), salinity, and sea-surface height (SSH) were used to evaluate the distribution and characteristic of oceanographic conditions on the light fishing location in the Java Sea. The objectives of this study were to monitor the distribution of light fishing vessels from VBD and to evaluate the oceanographic characteristic on light fishing position. VBD data were prepared by national oceanic and atmospheric administration website and oceanographic data was provided by ocean color and copernicus marine environment monitoring service website. Overlaid process between light fishing position and oceanographic data was used to extract the oceanographic value in the light fishing location. The result showed most of light fishing occurred during southeast monsoon. In general, most of light fishing appeared in position of 107 - 114 °E and 4 - 5.30 °S. In addition, light fishing located in oceanographic condition for SST of 28.1 - 31.1 °C, chl-a of 0.26 - 0.60 mg/m3, salinity of 32 - 35.5 psu and SSH of 0. 5 - 0.62 m. The VBD data opens up a number of potential future applications for more computable fisheries data analysis.