Analysis of Sedimentation Patterns Using Landsat 8 in North and West Part Coastal Area of Madura Island

Abstract

Indonesia is a country with its sea area four times greater than its land area. Indonesia also has many islands. Therefore, Indonesia is known as a maritime and archipelagic country. Due to those conditions, coastal areas become the important part in Indonesia. Coastal area is an area of transition from terrestrial to marine ecosystems. Coastal activities can affect its physical conditions, especially sedimentation. Sedimentation pattern can be represented by Suspended Sediment Concentration (SSC) parameter. Satellite remote sensing is an effective source of information to monitor SSC in the coastal area. This study intends to analyse sedimentation patterns on the north and west coasts of Madura Island by extracting SSC values from Landsat-8 imagery. Modelling of currents and sediment transport is also performed in this study to analyse sedimentation pattern. From the analysis it was found that the value of SSC in the rainy season tended to be higher than in the dry season. The tendency of SSC is to gather in the estuary area of rivers, bays, and beaches which protected by the construction of coastal buildings. Whereas through modelling of current and sediment transport, Arosbaya Sub district is the most dynamic sub district due to the meeting of currents from and into the Madura Strait which carrying sedimentary material.