Water column optical properties influence in satellite-derived bathymetry: Study case in Chrissi Island, Greece

Satellite-derived bathymetry (SDB) has become increasingly recognised for its effectiveness in acquiring bathymetric data in recent decades. This method heavily relies on water properties to estimate depths accurately, assuming minimal backscatter from the water column and focusing mainly on seabed backscatter. In this study, we explore the potential benefits of incorporating water column properties information by calculating the absorption and scattering coefficients of remote sensing reflectance. By doing so, we aim to differentiate between the direct backscatter of the water column and that of the seabed. Our investigation focuses on Chrissi Island in Greece, known for its clear waters and distinctive geological and environmental features. Using SDB, we analyse changes in seabed morphology throughout the year 2022, revealing seasonal variations that influence water properties.