NUMERICAL ANALYSIS OF TIDAL CIRCULATION FOR LONG BEACH OUTER HARBOR PROPOSED LANDFILL

A study was conducted for Long Beach Harbor to numerically investigate tidal circulation in existing basins and to define and evaluate the impact of a proposed oil terminal adjacent to pier J on existing harbor circulation. A two-dimensional depth-averaged formulation of the hydrodynamic equations was used in the model and an implicit-explicit finite difference scheme was used to numerically solve the equations. The numerical model had been verified in a previous study using tide and velocity data from the prototype and from physical model tests conducted at WES. Two landfill configurations for the oil terminal along with a channel dredging project in the Port of Los Angeles were considered in the study. Tidal currents were relatively unaffected by the proposed plans except near the oil terminal and the dredging project. Net discharges through the harbor entrances and through Cerritos Channel in the inner harbor were not changed significantly. (Author)