Los Angeles and Long Beach Harbors Model Study. Report 5. Tidal Verification and Base Circulation Tests. Appendix B: Surface-Current Pattern Mosaics
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS
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This appendix contains surface-current pattern mosaics of base tidal circulation tests conducted in the physical model of Los Angeles-Long Beach Harbors. Mosaics are included for each hour of a complete tidal cycle under two tidal conditions--a typical spring range tide 7.1-ft diurnal range and a neap range tide 3.5-ft diurnal range. A plot of tidal elevations for gage LA is shown on the hour 0 mosaic for each tidal condition. These mosaics, reproduced at about 35 percent of the original size, are 10-sec 400 sec prototype time time-exposure photographs of confetti floating on the water surface. Confetti streak lengths may be converted to current speed by subtracting the confetti chip width from the length and then using the speed scale shown on each mosaic. A bright light was flashed just before the camera lens was closed, resulting in a a bright spot or dot at approximately the end of each confetti streak which indicates the direction of flow however, the dot is not discernible on some of the streaks.
- Physical and Dynamic Oceanography
- Civil Engineering