Estimation of shallow water depth using satellite imagery : generalization of estimation formula with increased number of bands

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Bathymetry information is lacking domestically and internationally, and waterdepthmapping techniqueusingsatellite imagery is countedon asacomplementary bathymetrymethod. However, the accuracy was notenough because the traditionalsatellite images used for the purpose were observing in no more than 4 wavelength bands(colors). In 2010, a new imagery called WorldView-2, which observes in 8 bands, became available. In this study, we analyzed a number of WorldView-2 images and found that the doubling of bands enhanced the accuracy of water depth mapping and the generality of the water depth estimation formula.