![]() WSP was part of the interdisciplinary team led by SCAPE Landscape Architecture that proposed the selected “Living Breakwaters” concept. cities most vulnerable to intense weather events. The Living Breakwaters project proposes a series of eight detached breakwaters that will reduce risk, restore ecosystems, and connect the public to nature. Department of Housing and Urban Development and the Presidential Hurricane Sandy Rebuilding Task Force launched “Rebuild by Design” to seek community and policy-based solutions to protect U.S. After Hurricane Sandy hit New York in 2012, a federal competition, Rebuild by Design, was launched to prepare the city for tomorrow’s challenges. The need for enhanced erosion protection came into stark relief during recent storm events, including Superstorm Sandy, when the community of Tottenville experienced severe damage from storm surge. Additionally, wave activity, siltation, dredging and pollution have significantly deteriorated the marine ecology of Raritan Bay, including the once abundant oyster population and the rich biodiversity it supported. Above ground biomass contributes to a rough surface that reduces incoming wave energy.The southeastern shoreline of Staten Island, New York has experienced continued erosion over decades due to increasingly intense waves. After 2-3 years of establishment, a dense underground root and rhizome system will help stabilize the beach sand. This beach plant can grow in sand and tolerate occasional overwash and sand burial. Saltmeadow hay ( Spartina patens) is the most common grass planted at offshore breakwater projects. ![]() The artificial sand fill jumpstarts the process of creating stable pocket beaches and provides equipment access for breakwater installation. Duhringīeach nourishment is an essential part of the offshore breakwater system using clean, coarse-grained sand. This photo shows how an experienced operator creates a foundation for the machinery, and then carefully places the stone into the staked design footprint. Offshore breakwaters are constructed using large excavators and dump trucks that haul the stone and sand to the shoreline. The sand fill connected to the stone breakwaters is called a “tombolo”. But students likely harbor the misconception that indirect development is an exception to a general pattern of direct development. This offshore breakwater system at VIMS combines fixed stone structures with beach nourishment to create stable pocket beaches on a moderate energy York River shoreline. Living Breakwaters Life Cycle Cards Living Breakwaters Adult Critter Cards Introduction Students are likely to know that caterpillars metamorphose into butterflies, and perhaps that tadpoles metamorphose into frogs. Time of year restrictions or design modifications may be required for protected species. sea turtles, Northeastern beach tiger beetle). The comprehensive climate change adaptation and community development project Living Breakwaters by Scape / Landscape Architecture has been selected as the. The placement of sand on certain high-energy beaches can impact habitat of protected species (e.g. Allowing the breakwaters to accrete sand naturally steals sand from the longshore drift sand supply and may create or exacerbate erosion on downdrift properties. The potential effects of breakwaters on adjacent shorelines must be carefully considered.īeach nourishment is an inherent component for any breakwater project. Potential breakwater project sites must be surveyed for submerged aquatic vegetation (SAV) habitat. The ratio of maximum bay indentation to gap width is used to predict the future position of the beach shoreline between breakwaters. Proper breakwater design requires advanced knowledge of coastal processes at the site, such as expected wave height, dominant wind directions, and sand movement. Offshore breakwaters are used to create or enhance sand beaches, while marsh sills are usually placed closer to shore to create or enhance tidal marshes. Guidelines for Offshore Breakwater Systems Shallow nearshore water depths with hard sand bottomĪbsence of significant submerged aquatic vegetation (SAV) or shellfish habitat Long beach shorelines where more than one breakwater unit can be installed A wide sand beach provides an erosion buffer as well as valuable estuarine habitat for aquatic and terrestrial wildlife.Įxisting sand beaches at moderate to high energy locations The system includes beach nourishment and planting beach and dune vegetation. Offshore breakwater systems provide shoreline protection by intercepting incoming waves and creating stable pocket beaches between the fixed stone structures, or "headlands". W&M > VIMS > CCRM > Living Shorelines > Design Options > Structural Options Living Shorelines: Design Options - Offshore Breakwater SystemĪ living shoreline approach for sand beach shorelines uses large, gapped stone structures strategically placed offshore.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |