Oil Spill Identification and Prediction of Their Distribution Based On Interpretation Sentinel-1A Imagery In Karawang Water West Java

Abstract

Oil spills in the sea are a type of pollution of crude oil in waters which often becomes an environmental issue that can be a threat to the surrounding area and can even cause cross- border pollution. During this time oil spills in the sea have continued to increase in number and frequency, resulting in damage to a large number of coastal and marine areas. To minimize environmental pollution in a wider area, a method is needed to overcome it. One of them is mapping technology using remote sensing. The purpose of this study was to detect oil spills using Sentinel-1 imagery, to determine the area of the detection results and the estimated affected area. The method used for oil spill detection is the automatic method (adaptive threshold) which includes three parameters (background window, threshold shift, and cluster) and semi-automatic (difference threshold) the difference in the value of backscattering before and after the oil spill and the threshold value between oil and water. The results of these two methods provide fairly good results in the detection of oil spills for a fairly thick oil area with an estimated area of 3,548,600 km² in the automatic method and 2,903,900 km² in the semi-automatic method. Based on the dominant wind pattern directed to the West and Northwest, it can be estimated that the distribution of the oil spill have a major impact in the coastal areas around the Karawang district. Including Mekarpohaci, Sungai Buntu, Pantai Cemara, and Sedari. This wind pattern is likelyto spread the oil spill to the coast around Seribu Island if it is not responsive in its control