ANALYSIS OF DOC CONCENTRATION IN THE COASTAL OF SAMBAS, WEST BORNEO AND SARAWAK, MALAYSIA WITH SENTINEL 2-A SATELLITE

• Main Author: Joan Soetanto, Nicolas
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/82497
• Institution: Institut Teknologi Bandung

Dissolved Organic Carbon (DOC) is a component of Dissolved Organic Matter (DOM) that can enhance primary productivity, thereby improving the economy, especially in coastal areas. DOC is examined in the context of the interaction between Sarawak, Malaysia with Sambas, West Borneo through the South China Sea to assess the economic potential of Sambas in each month. Results of Sentinel 2-A Satellite imagery, namely remote sensing reflectance (Rrs) band 2 and band 3, is used to acquire Colored Dissolved Organic Matter (CDOM) and DOC using the equations CDOM = ln (R/2,61) / (-2,71), DOC = 173,54 × CDOM + 15,77. The concentration of DOC in Kuching, Sarawak is influenced by rainfall (R2 = 0,4). The concentration of DOC in Pemangkat, West Borneo is not influenced by rainfall (R2 = 0,09). Rainfall does not affect Pemangkat, West Borneo, because sources of DOC concentration in the coastal area of Sambas originate from human activities along the coast. The distribution of DOC concentration in the coastal waters of Sambas is influenced by the season, which affects the direction of the South China Sea currents. The direction of the South China Sea currents towards Sambas and passing through Sarawak during the west and east monsoon seasons increases the distribution of DOC in Sambas, increasing the distribution of DOC concentration in Sambas. The weakening of the South China Sea currents along the coast of Sambas can lead to an increase in DOC concentration, especially in areas that are major sources of DOC production.