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Title: Los Angeles and Long Beach Harbors model study. Report 5, Tidal verification and base circulation tests
Authors: United States. Army. Corps of Engineers. Los Angeles District.
McAnally, William H.
Keywords: Harbor oscillations
Long Beach Harbor
Hydraulic models
Los Angeles Harbor
Tidal circulation
Water quality
Issue Date: Sep-1975
Publisher: Hydraulics Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Technical report (U.S. Army Engineer Waterways Experiment Station) ; H-75-4 rept.5.
Description: Technical Report
Abstract: The objectives of the Los Angeles and Long Beach Harbors model studies are to investigate tidal circulation and basin oscillation characteristics of the existing harbors and to evaluate the impact of proposed harbor modifications upon these phenomena. To conduct these studies, a physical hydraulic model has been constructed with linear scales of 1:100 vertically and 1:400 horizontally, which reproduces astronomical tides and tidal currents and is capable of reproducing wastewater discharges. The model has been verified to correctly reproduce tidal elevations, phases, current velocities, and net flows observed in the prototype. Base tests of typical spring tide (7.1- ft diurnal range) and neap tide (3.5-ft diurnal range) conditions have been conducted to establish existing tidal circulation characteristics of the harbors. It is concluded that : (A.) the model can be used to reliably predict the effect of proposed harbor modifications on tidal elevations and tidal circulation within the harbors, (B.) tidal circulation within the harbors is weak for existing conditions, (C.) careful design and model tests of proposed modifications should ensure that the harbor's ability to maintain adequate water quality is not impaired, and (D.) a net flow toward the west in Cerritos Channel and a net flow toward the east in the outer harbor are characteristic for spring range tidal conditions. For neap tidal conditions net flow computations were inconclusive. NOTE: This file is large. Allow your browser several minutes to download the file.
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