with the sand measured in the traps to calculate longshore sediment transport
rates.
Summary
The process of building the beach to straight and parallel contours is labor-
intensive, but necessary to obtain an accurate rate of longshore sediment
transport. The use of a tractor and elevation indicators have been an effective and
efficient method of accomplishing this goal. The masonry brick boundaries allow
adjustment of the updrift and downdrift beach elevations to represent the average
beach profile elevation. Beach uniformity is monitored from bathymetric surveys
that follow each experiment segment. Additionally, the surveys monitor the
existence of a shoal that may form at the downdrift boundary for mild or
moderate longshore currents. The quantity of excess sand in the shoal is included
in calculations of longshore sediment transport.
53
Chapter 5
Beach Morphology Control
Previous Page
