Backscatter Response on Electrical Conductivity (EC) for Source Tracing of Sea Surface Salinity (SSS) in Cimanuk River-Indramayu: A Preliminary Study

The retrieval of sea surface salinity (SSS) information based on the observation satellite remote sensing is available only at the coarse spatial resolution, which covers the global and regional extent. The SSS is the primary source of salt concentration in the river and influences the occurrence of seawater intrusion inland. This study aims to retrieve and map the variation and distribution of SSS along the Cimanuk River based on the characteristics of Sentinel 1 data. In order to map the SSS, some of the extracted salt concentration is represented by the electrical conductivity (EC) ds/m required. It is used to understand the correlation of radar backscatter. The mapping process is done by implementing the selected linear regression model. This model gives an estimated EC value range from 10.085 to 21.314 (dS/m) with an accuracy of about 0.3984. The EC values in the area near the coast are seen to continue to decrease inland as the distance from the coast increases