Chieh-Cheng J. Yen

Determinations of suspended sediment concentrations from multiple day landsat and AVHRR data

Abstract A combination of satellite data, on-site sampling, and hydrodynamic and water quality model simulations was used to evaluate surface sediment concentrations in Sandusky Bay, Lake Erie. Both satellite brightness values and categorizations of total suspended sediment concentrations from Landsat and AVHRR data were evaluated for the period of 10–28 June 1981. The satellite data products displayed many of the trends in concentration recorded by the on-site data, and were similar to the results of hydrodynamic and water quality (HWQ) model simulations reported elsewhere.

A three-dimensional/stereoscopic display and model control system for Great Lakes forecasts

A forecasting system for the Great Lakes in which the data generated by a three-dimensional numerical model is visualized by a 3-D/stereoscopic display module is discussed. The module consists of a control panel and a display window with the capability of interactively rendering the results. The event scheduling for scenario testing to steer the 3-D numerical model is achieved by a similar panel. These panels set up the simulation and control the data flow between the graphics workstation and supercomputer. Rendering methods, stereo imagery, and animation are incorporated to display the results. Interaction between the user, the workstation, and the supercomputer allows steering of the simulation and tracing of the simulation output. Distributed software for postprocessing and volume rendering are used to enhance the representation.<<ETX>>