Identifying a balance between waves dampening and shoreline nourishment should be considered in the design and implementation of these structures. Study results indicated that breakwaters are advantageous for wave breaking to protect shorelines from the wave’s energy, however, they might also be an obstacle for sediment transport, negatively affecting nourishment processes, and, consequently, impeded long-term salt marsh survival. Sediment trapping, defined as the ratio between the volume of sediment housed into the salt marsh behind and away from the breakwater, was found to be less than 1 from most model runs. Shear stress at the beginning of the marsh and the volume of sediment deposited at the end of the simulation (into the marsh behind the breakwater) increased on average between 20–40%, proportional to the slope and distance of the breakwater from the shoreline. Model results suggested breakwaters were responsible for an average wave damping between 10–50%, proportional to the significant wave height across all modeled scenarios. fill rate of a geotube was limited to 30 of the pump rate due to the slurry concentration. Model configurations used the same numerical domain, but scenarios had different sediments, waves, tides, basin slopes and breakwater distances from the shoreline to explore how waves and tidal currents shape coastal margins. Submerged Geotextile Breakwater Construction Modeling Amarjit Singh and Jerre Hansbrough Department of Civil and Environmental Engineering University of Hawaii at Manoa Honolulu, HI 96822, USA. To address this gap, our study quantifies the effects of breakwaters on sediment transport and marsh evolution under different wave regimes using Delft3D-SWAN, a dynamic geomorphodynamic numerical model. Although common, their effects on sediment transport and marsh geomorphology are poorly understood. Breakwaters are a common feature along coastlines, which are used to dampen wave energy and protect shorelines from flash floods or overwash events. Geotube® engineered textiles are fabricated from a high-strength, woven engineered textile with special high-strength seaming techniques to resist pressures during pumping operations.Human encroachment and development on coastlines have led to greater amounts of armoring of shorelines. Geotube® engineered textiles are a cost-effective alternative when compared to traditional marine construction materials and methods. Minimum impact on the environment while providing a beneficial use for dredge material.These coastal and riverine structures are necessary to preserve and reconstruct eroding shorelines. Groynes, Jetties & Dikes Geotube® containers can be used in a variety of applications as groynes, jetties, or dikes. These engineered textile tubes protect rapidly eroding islands that harbor various wildlife, some on the edge of endangerment. Wetland Creation With the use of Geotube® fabricated containers, many bird and wildlife habitats have been reclaimed and restored. While beach and sand in front of the engineered textile tube may be quickly washed out to sea during storm season, any beach or property behind the engineered textile tube will remain in tact. A Geotube® container hidden within a sand dune stops any damage from attacking waves. Sand Dune Cores Geotube® containers are proven effective solutions to coastlines need for protection against storm damage. Islands made with Geotube® engineered textiles are practical for creating a resort atmosphere, or containing dredged sand to clear a harbor. Island Creation Geotube® containers are often used to create artificial islands or to protect eroding islands. ![]() Geotube® engineered textile containers are an economical solution for protecting coastlines. Shoreline Protection Geotube® containers can aid in the reclamation of sand. Geotube® engineered textiles in breakwaters offer an economical solution for protecting coastlines. Each Geotube® container is filled and submerged strategically just off shore to trap sand accumulation for additional beach space. Breakwaters Geotube® containers have been used in a variety of breakwater applications to protect and enhance beachfronts. Geotube® engineered textiles are easy to install beneath the water surface, in difficult conditions, and once in place provide continued performance. Geotube® fabricated containers are used as integral components in the design and construction of a variety of marine & hydraulic engineering structures.
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