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Remote sensing and numerical modeling of suspended sediment in Laguna de terminos, Campeche, Mexico
Abstract and Figures
It is necessary to understand the complex physical processes at work in coastal lagoons in order to manage them effectively. Improved methods of data collection and analysis must be found to provide synoptic, timely hydrodynamic information because of the sheer size of some lagoons and the difficulty of acquiring in situ data (particularly in the tropics). This paper summarizes research to model salinity and suspended sediment distributions in Laguna de Terminos, Mexico, using 1) a coupled hydrodynamic and dispersion model and 2) analysis of two Landsat Thematic Mapper images collected on 25 November 1984 and 24 April 1987. Atmospherically corrected chromaticity data derived from Thematic Mapper data were significantly correlated with modeled total suspended sediment concentrations for the two dates. Comparison between numerically modeled and remotely sensed suspended sediment maps at 1.5× 1.5 km resolution yielded a covariation map useful for identifying areas of discrepancy between the remotely sensed data and model output.
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