The use of magnetic data from swarm satellite as an efforts to estimate the potential of iron sand in the south Bawean Island area

This study describes the use of magnetic data obtained through the Swarm satellite and launched by the Europan space agency to estimate iron sand deposits in the southern part of Bawean Island, Gresik Regency. Data processing in this study was carried out using Microsoft Excel and Oasis Montaj software. The interpretation process in this study was carried out in two stages, namely the qualitative interpretation stage using contour residual anomaly maps and quantitative interpretation using 2D and 3D modeling. The interpretation results show that the aeromagnetic data used can be used as initial data in estimating sand deposits in the southern part of Bawean Island, Gresik Regency.