Landsat Reflectivities Versus Secchi Disc Depths

摘要

A simple theory is developed relating Secchi disc depth to reflectivity, justbelow the surface, in the green band. The theory contains one adjustable constant, B, the ratio of backscattering to total scattering coefficients for suspended particles. A method is then outlined for correcting the satellite data for atmosphere effects. Secchi depths are then compared with reflectivities, in the green in two Landsat Multi-spectral Scanner (MSS) scenes. It is found that for Secchi depths< 16m, the theory provides a good fit to the data with B = 0.0077. (MM).