Multi-Purpose Breakwaters

Manson, Todd; Gilman, Jena F.; Perkol-Finkel, Shimrit; Sella, Ido; Marrone, Joseph F.

doi:10.1680/cmsb.63174.0449

Cited by 2 publications

(1 citation statement)

References 7 publications

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“…Multipurpose breakwaters, which are designed to provide additional environmental or social benefits, or both, in addition to structural benefits, play an important role in harbor and coastal resiliency efforts (Fredette et al 2016;Manson et al 2018;Hardaway et al 2020).…”

Section: Detached Breakwaters and Jettiesmentioning

confidence: 99%

Embracing biodiversity on engineered coastal infrastructure through structured decision-making and Engineering With Nature®

Dolatowski,

Suedel,

Calabria

et al. 2024

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Extreme weather variation, natural disasters, and anthropogenic actions negatively impact coastal communities through flooding and erosion. To safeguard coastal settlements, shorelines are frequently reinforced with seawalls and bulkheads. Hardened shorelines, however, result in biodiversity loss and environmental deterioration. The creation of sustainable solutions that engineer with nature is required to lessen natural and anthropogenic pressures. Nature-based solutions (NbS) are a means to enhance biodiversity and improve the environment while meeting engineering goals. To address this urgent need, the US Army Corps of Engineers (USACE) Engineering With Nature® (EWN) program balances economic, environmental, and social benefits through collaboration. This report presents how design and engineering practice can be enhanced through organized decision-making and landscape architectural renderings that integrate engineering, science, and NbS to increase biodiversity in coastal marine habitats. When developing new infrastructure or updating or repairing existing infrastructure, such integration can be greatly beneficial. Further, drawings and renderings exhibiting EWN concepts can assist in decision-making by aiding in the communication of NbS designs. Our practical experiences with the application of EWN have shown that involving landscape architects can play a critical role in effective collaboration and result in solutions that safeguard coastal communities while maintaining or enhancing biodiversity.

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Section: Detached Breakwaters and Jettiesmentioning

confidence: 99%

Embracing biodiversity on engineered coastal infrastructure through structured decision-making and Engineering With Nature®

Dolatowski,

Suedel,

Calabria

et al. 2024

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Assessing Wave Attenuation With Rising Sea Levels for Sustainable Oyster Reef-Based Living Shorelines

Salatin

Wang

Chen

et al. 2022

Front. Built Environ.

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In densely populated coastal areas with sea-level rise (SLR), protecting the shorelines against erosion due to the wave impact is crucial. Along with many engineered structures like seawalls and breakwaters, there are also green structures like constructed oyster reefs (CORs) that can not only attenuate the incident waves but also grow and maintain pace with SLR. However, there is a lack of data and understanding of the long-term wave attenuation capacity of the living shoreline structures under SLR. In this study, we used the phase-resolving Boussinesq model, FUNWAVE-TVD, to examine the hydrodynamics including wave height and wave-induced currents around the CORs in the Gandys Beach living shoreline project area in the upper Delaware Bay, United States. Waves were measured at six locations (offshore to onshore, with and without CORs) in the Gandys Beach living shoreline project area for two winter months, during which four nor’easters occurred. We selected three cases that represent prevailing wind, wave, and tide conditions to examine the fine spatial and temporal changes in wave height and current velocity by the construction of the reefs. Wave heights and wave energy spectra generated from FUNWAVE-TVD were then validated with field observations. It is found that FUNWAVE-TVD is capable of simulating waves and associated hydrodynamic processes that interact with CORs. The model results show that wave attenuation rates vary with the incident wave properties and water depth, and wave-induced circulation patterns are affected by the CORs. The wave attenuation capacity of CORs over the next 100 years was simulated with the incorporation of the oyster reef optimal growth zone. Our study found that sustainable wave attenuation capacity can only be achieved when suitable habitat for COR is provided, thus it can vertically grow with SLR. Suitable habitat includes optimal intertidal inundation duration, current velocity for larval transport and settlement, on-reef oyster survival and growth, and other environmental conditions including salinity, temperature, and nutrient availability. Furthermore, the model results suggest that it would take CORs approximately 9 years after construction to reach and maintain the maximum wave attenuation capacity in sustainable living shorelines.

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Multi-Purpose Breakwaters

Cited by 2 publications

References 7 publications

Embracing biodiversity on engineered coastal infrastructure through structured decision-making and Engineering With Nature®

Embracing biodiversity on engineered coastal infrastructure through structured decision-making and Engineering With Nature®

Assessing Wave Attenuation With Rising Sea Levels for Sustainable Oyster Reef-Based Living Shorelines

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