Scientists at the Coastal Studies Institute (CSI) and the Nature Conservancy (TNC) recently worked with local contractor, Total Marine Services Inc, to install four 100’ breakwater sills in front of the CSI property as part of a shoreline stabilization project. The materials—633 tons of class C, or watermelon-sized, limestone riprap—were transported by barge from Wanchese and placed in 4-foot deep water. Monitoring of the site is ongoing and will provide important insight on the effectiveness of this type of nonvertical, ecosystem-friendly shoreline stabilization method.
Baseline data collection on the study control site was also completed this week. To begin data collection, the designated control area was divided into three transects spanning from the vegetation line to approximately 5-ft depth, or roughly 25 meters offshore. Sediment samples were collected at 5-meter intervals along each transect and location and elevation data were collected at each sample point using a highly accurate real time kinematic global positioning system (RTK-GPS). Over the course of this study, researchers will use these and a timeseries of sediment samples plus benthic, ecological, and shoreline data to better understand the impacts and effectiveness of the breakwater structure.
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