DETECTING WATER-QUALITY PARAMETERS IN THE NORFOLK BROADS, UK, USING LANDSAT IMAGERY

The water quality parameters chlorophyll-a, total phosphorus, Secchi disk depth, suspended solids, salinity and temperature in the Norfolk Broads have been studied using Landsat TM data. An empirical approach of relating TM data with ground referenced data for these parameters through regression analysis was employed. Significant relationships were established between them. These models were used to predict and map these parameters in 27 of the Norfolk Broads. All the predicted values are consistent with the available general knowledge about these Broads.