The comparison of bathymetric estimation from three high resolution satellite imagery

Abstract

This study was using three high resolution satellite imagery to estimate bathymetric condition at shallow water coral reef environment around Pulau Panggang, Jakarta. The Worldview 2 supply 2 m spasial resolution with 8 spectral band, whereas Quickbird 2 produce 2.44 m spatial resolution in 4 spectral band and ALOS produce 10 m spasial resolution with also 4 spectral band. Red band of ALOS and Quickbird have high correlation with sand depth and the lowest are blue bands. Among this bands, Quickbird red band is the highest and its blue band is the lowest. Worldview visible bands may have low sand depth correlation because of noise from ripple wave during acquisition. This study shown that, Quickbird image is proven able to map water depth variation up to 8 metre at reef flat and lagoon area of Panggang island, Jakarta with RMSe is 1.1 metre. The result also shown an opportunity to implement this approach to bathymetric mapping of shallow water area at remote small islands.