Investigation of isolated sand shoals on the inner shelf of Virginia relative to the potential for aggregate mining : report on study of possible wave force alternations on the proposed dredging at Sandbridge Shoal, VA
Virginia Institute of Marine Science
The Virginia Institute of Marine Science, together with other state agencies, has a continuing interest in preserving the coastline of Virginia, particularly, the Atlantic coastline in the vicinity of the resort city of Virginia Beach. Because a well maintained beach can serve several purposes , e.g., ( 1) providing public recreational areas, (2) protecting valuable properties that are located near coastline , and (3) reducing the rate of land loss, a great deal of efforts has been devoted to understand the processes that affect the change of shoreline. Among several erosion forces , waves are especially important elements as they can alter the shoreline significantly.
One may use any of several approaches to maintain a beach properly, and perhaps may use all available approaches in parallel to obtain the best results. In the coastal sector of Virginia Beach, beach nourishment using_material from inland borrow pits has been done constantly during the last two decades . It has become more difficult to find land sources of good beach-quality sand . Sand loss from the beach due to both shore normal and longshore transport creates the need to find a reliable source of good quality sand for future use.
Sandbridge Shoal ( Fig. 1) located approximately 20 miles south of Virginia Beach and 3 miles offshore , has been identified as a potential source of good beach-quality sand (Kimball and Dame , 1989). Use of the sand resources there, however, causes a great deal of concern that dredging may result in severe beach erosion at Sandbridge due to alternation of the wave transformation process .
Ocean waves -- Virginia -- Sandbridge Beach, Dredging -- Environmental aspects -- Virginia -- Sandbridge Beach
Maa, J. Y., & Hobbs, C. H. (1997) Investigation of isolated sand shoals on the inner shelf of Virginia relative to the potential for aggregate mining : report on study of possible wave force alternations on the proposed dredging at Sandbridge Shoal, VA. Virginia Institute of Marine Science, William & Mary. https://scholarworks.wm.edu/reports/2348