Native beach sediment and sediment from nine potential borrow sites were investigated at Ocean City, MD, during 1986 to 1987 for design of a beach nourishment project. The project, as finally completed, constructed a beach 8 miles long with a 100-ft-wide berm. A total of 2.7 million yd3 was removed from two borrow sites and placed on the beach. This report discusses the methodology used in sampling and analyzing sediment from the native beach and each borrow site. Beach samples were collected at periodic intervals along 36 profile lines perpendicular to the beach. Samples extended from the upper berm to -30 ft National Geodetic Vertical Datum. Grain size was computed for each sample, and a grand composite sample was computed for the entire beach. Results suggest that this technique collected and analyzed more samples than were necessary. Sampling schemes should be closely tied to local profile closure depth and take advantage of natural alongshore consistency in grain size. A streamlined sampling plan could also benefit the final calculated composite and improve the chance of nourishment success. Temporal changes in sediment were examined through a one-time beach coring program that sampled the entire active envelope of sediment.
Beach and Borrow Site Sediment Investigation for a Beach Nourishment at Ocean City, Maryland
Technical Report ; CERC-90-5
1990
3832597
Report
Elektronische Ressource
Englisch
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