Please use this identifier to cite or link to this item:
|Title:||Lake Erie International Jetport model feasibility investigation. Report 17-5, The wind-driven currents and contaminant dispersion in the near-shore of large lakes|
|Authors:||Case Western Reserve University. Department of Earth Sciences.|
Lake Erie Regional Transportation Authority.
Sheng, Yea-Yi Peter.
|Publisher:||Hydraulics Laboratory (U.S.)|
Engineer Research and Development Center (U.S.)
|Series/Report no.:||Contract report (U.S. Army Engineer Waterways Experiment Station) ; H-75-1 rept.5.|
Abstract: The wind-driven circulation and dispersion of contaminants in a near-shore region of Lake Erie have been studied by means of numerical models. The first problem studied was that of the thickness of the coastal boundary layer in a large lake. In this study, the non-linear acceleration and Coriolis force terms were included in the equations of motion. Next, a major study of the steady-state and time-dependent currents in the near-shore Cleveland area of Lake Erie, under present conditions and as modified by large man-made structures islands, e .g., a jetport in the lake, was made. The effects of (1.) a jetport island approximately 6 miles offshore of Cleveland, and (2.) a land-fill extension of this island to shore, were examined in detail. The island was found not to affect the flow appreciably while the extension to the shore modified the flow significantly. The calculations generally require a fine near-shore grid coupled with a coarser off-shore grid. In time-dependent calculations, a small time step was used in the near-shore while a larger one was used in the off- shore. The proper coupling procedure was studied in detail. The three-dimensional, time-dependent dispersion equation has been solved for various conditions. A vertically stretched coordinate system was used to incorporate the variable bottom topography. The flow and dispersion of a contaminant from a point source (the Cuyahoga River) in the near-shore were studied using the velocities obtained from the numerical hydrodynamic models. Effects of horizontal diffusion, gravitational settling, and bottom boundary condition were examined. With some modification, the numerical models developed in this report can be applied to study the near-shore regions of other large lakes and the ocean.
|Rights:||Approved for public release; distribution is unlimited.|
|Appears in Collections:||Contract Report|
Files in This Item:
|CR-H-75-1-Report-17-5.pdf||23.83 MB||Adobe PDF|