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Shallow Water depth is one of the important factors in science and coastal environmental management. However, in-situ measurement is quite costly and time-consuming. Past research efforts have provided a number of optically-based methods to estimate shallow water depth distribution from satellite image, but they cannot handle with the heterogeneity in bottom sediment distribution without the help of image-specific assumptions or additional information on bottom reflectivity. It is indispensable to develop a method that can be applied to water areas with inhomogeneous bottom material. In this paper, we present a generalized method over the previous methodologies by using remote sensing-based bottom feature information. The new method is applied to three coral reef areas, and as a result, is found to have improved accuracy and stability.

A GENERALIZED SATELLITE-BASED METHOD OF WATER DEPTH MAPPING CONSIDERING THE NONUNIFORMITY OF BOTTOM MATERIAL