1988; Smith, Resio, and Zundel 1999) also includes steepness-limited 

 and depth-limited breaking criteria and the wave-current interaction. 



• Tidal constituent database. This database (Westerink, Luettich, and 

 Scheffher 1993) allows the user to manually generate time series of tidal 

 elevations or to use a program to access the full database to generate the 

 time series of both tide elevations and currents for any location along the 

 U.S. east coast, Gulf of Mexico, Caribbean Sea, or U.S. Pacific coast. 

 This database drives hydrodynamic models such as ADCER.C. 



• Sediment-transport calculator. This utility will calculate sediment- 

 transport rates as an indicator of areas of erosion and accretion. 

 Typically, in DMS applications, it yields indicators of transport potential 

 rather than actual values. 



• Initiation of sediment-movement calculator. This tool indicates areas 

 of sediment movement. Inputs from ADCIRC and wave estimates 

 determine the shear stress on the bed. From a Shield's diagram, the 

 program identifies areas of live bed (sediment motion) or clear water (no 

 sediment movement). 



• Fetch-limited, wind-generated wave model. This tool calculates the 

 wave height and period associated with locally generated wind waves. 

 The sediment-transport calculator accesses this information to determine 

 whether wave-driven sediment transport is a cause of channel shoaling. 



• Ebb jet model. This tool examines the ebb jet issuing forth from an 

 inlet. Based on the work by Ozsoy and Unluata (1982), this program 

 calculates the velocity distribution of an ebb tidal jet. It takes into 

 account lateral mixing and entrainment, bottom friction, one-dimensional 

 bathymetric changes, and ambient currents. Intended for shoaling 

 problems in channels through tidal inlets, this tool provides estimates of 

 velocity magnitudes that will drive sediment-transport calculations. 



The DMS-Analytical Toolbox is not just a collection of programs. It also 

 contains suggestions for display of information generated by these tools. The 

 format for display of information increases the speed of diagnosis and 

 investigation of alternative solutions. 



An ancillary goal of the DMS-Analytical Toolbox is to improve 

 interpretetive capabilities through adopting innovative graphical formats. 

 Typically, graphical display of hydrodynamic information has been limited to 

 2-D plots of flow vectors and time-series plots of elevations or integrated flow 

 across an inlet such as in Figures 13 and 14. Although these plots provide some 

 information about the currents in the area, they do not clearly illustrate how the 

 bathymetry controls the flow pattern. Inclusion of false-color contouring of the 

 bathymetry or the velocity magnitude shown underneath the velocity vectors as 

 in Figures 15 and 16 can greatly enhance the diagnostic utility of these figures. 



Chapter 4 DMS-Analytical Toolbox 33 



