Figure 4.8 - Surface elevation and bottom shear stress in the 



enclosed basin. Results from three models 64 



Figure 4.9 - Simplified geometry and topography for the Mississippi 



Sound and adjacent coastal waters 65 



Figure 4.10- Tidal currents and bottom shear stress within the 



Mississippi Sound and nearby waters after a four day 



simulation: (a) vertically-integrated velocities, 



(b) velocities at o =-0.1, (c) velocities at o =-0.9, 



and (d) bottom shear stress 67 



Figure 4.11- Horizontal velocities near the bottom (j=-0.9) as a 



function of time for three locations 69 



Figure 4.12- Horizontal velocities near the bottom Ip =-0.9) as a 



function of time for three locations. Wind-driven currents 



due to southerly wind 71 



Figure 4.13- Wind-driven currents and bottom shear stress due to 



a westerly wind 71 



Figure 5.1 - Lateral numerical grid used for dynamic simulation of 



coastal currents within the Mississippi coastal waters .... 73 



Figure 5.2 - Bottom topography of the Mississippi coastal waters 74 



Figure 5.3 - Lateral numerical grid used in the tidal simulation of 



entire Gulf of Mexico 75 



Figure 5.4 - Transient variation of surface displacements at four stations 



within the Mississippi Sound from 9/20/80 to 9/25/80 77 



Figure 5.5 - Surface displacement contours within the Mississippi coastal 



waters at hr, 9/23/80 78 



Figure 5.6 - Transient variation of mid-depth velocities at two stations 



within the Mississippi Sound from 9/20/80 to 9/25/80 80 



Figure 5.7 - Horizontal velocity field at hr, 9/23/80: 



(a) 1 m depth; (b) 10 m depth 81 



Figure 5.8 - Velocity field within a transect across the Mobile Bay 



Entrance at hr, 9/23/80 82 



Figure 5.9 - Vertical turbulent eddy viscosity field within a transect 



across the Horn Island Pass at hr, 9/23/80 83 



Figure 5,10- Transient variation of surface displacements at four stations 



from 6/12/80 to 6/16/80 85 



Figure 5,11- Surface displacement contours within the Mississippi coastal 



waters at hr, 6/16/80 87 



Figure 5.12- Transient variation of mid-depth velocity at two stations 



from 6/12/80 to 6/16/80 88 



VI 



