Abstract. Wind-wave forecasts play a crucial role in the North American Great Lakes region towards ensuring safety of communities, enhancement economy, and protection property. Modeling wind waves closed relatively shallow basins with complex bathymetry like is challenge that successfully tackled part by using variable-resolution triangular unstructured meshes no limits terms computational scalability maximum resolution coastal areas. In this paper, we discuss recent advances developing mesh...

Abstract The resiliency of coastal communities is imperative because these areas experience risk damage from storms as well increasing population pressures and development. severity this hazard compounded by sea level rise a potential increase in storm intensities due to climate change. ability plan for, resist, quickly completely recover severe events flooding critical importance. There growing interest applying complementary redundant approaches reduce the flood vulnerable communities,...

Accurate modeling of wind-generated ocean waves is critical for understanding coastal processes, maritime operations, and management. Recent advances in global wave forecasting have substantially improved large-scale predictions; however, bridging the gap between coarse-scale solutions finer-resolution requirements nearshore environments remains an ongoing challenge. In this study, we present our latest developments numerically downscaling wind-wave fields using WAVEWATCH III (WW3) framework...

Wave–vegetation interaction is implemented in the WAVEWATCH III (WW3) model. The vegetation sink term followed early formulations of Dalrymple et al. (Journal Waterway, Port, Coastal, and Ocean Engineering, 1984, 110, 67–79), which focused on monochromatic waves approximated as an array rigid, vertical cylinders, was later expanded by Mendez Losada (Coastal 2004, 51, 103–118) for random wave transformations over mildly sloping fields under breaking nonbreaking conditions assuming a Rayleigh...

The focus of this paper is on the storm surge modeling effort conducted as part North Atlantic Coast Comprehensive Study (NACCS). At time study, numerical component NACCS was largest civil works high-performance computational by U.S. Army Corps Engineers (USACE), requiring approximately 100 million CPU hours to complete. involved application latest atmospheric, wave, and models extreme value statistical analysis techniques. methodology for computing winds, waves, water levels a suite...

Abstract. Wind-wave forecasts play a crucial role in the Great Lakes region towards ensuring safety of communities, enhancement economy and protection property. Modeling wind waves closed relatively shallow basins with complex bathymetry like is challenge that successfully tackled by using variable-resolution triangular unstructured meshes. In this paper, we discuss recent advances developing unstructured-mesh capabilities as part spectral wave model WAVEWATCH III, context National Oceanic...

Accurate estimation of storm surge along the coasts subject to extreme conditions requires proper wind and pressure forcing quantification waves resulting from local far-field energy sources. This paper summarizes steps involved in accurately representing offshore wave climate for North Atlantic Coast Comprehensive Study (NACCS) domain, defined United States–Canadian border Maine Virginia–North Carolina border. The motivation regional modeling is provide boundary simulation extratropical...

The U.S. Army Corps of Engineers (USACE) recently completed a detailed study to address the coastal storm and flood risk vulnerable population, property, ecosystems, infrastructure affected by Hurricane Sandy. One component North Atlantic Coast Comprehensive Study (NACCS) used suite high-fidelity numerical models produce nearshore water level wave estimates for coast. Nearshore transformation NACCS was accomplished using model Steady-State Spectral Wave (STWAVE). To represent rigorously...

An automated Coastal Model Test Bed has been built for the US Army Corps of Engineers Field Research Facility to evaluate coastal numerical models. In October 2015, test bed was expanded during a multi-investigator experiment, called BathyDuck, two bathymetry sources: traditional survey data and generated through cBathy inversion algorithm using Argus video measurements. Comparisons were made between simulations spectral wave model STWAVE with half-hourly more temporally sparse surveyed...

In 2010, a report, Mapping the Zone, Improving Map Accuracy, was prepared by FEMA flood map committee appointed National Academies' Water Sciences and Technology Board, which discussed theoretical practical issues related to accuracy. The present analysis presents case study, addresses in particular one of their major concerns: use 1-D model solve 2-D problem. Finding #2 report stated: "Coastal maps can be improved significantly through coupled two-dimensional storm surge wave models process...

The performance of an intermediate-scale modular, permeable, floating breakwater comprised array vertical screens is optimized and tested. A distinctive attribute this design its adaptive capacity to fluctuating water levels owing configuration, thereby preserving efficacy during high tide storm scenarios—an advancement over conventional bottom-mounted structures. initial validation the concept was tested in a laboratory wave basin regular waves, which demonstrated promising results for...

The applicability of the wind wave suppression model developed by Chen and Belcher (2000) to irregular environments is investigated in this study. Monochromatic were simulated W2 (Wind/Wave) laboratory at University Maine under varying speeds. accurately predicts reduction energy density waves presence monochromatic as a function steepness, but dissipation for waves. This due consideration single frequency estimation growth rate wave-induced stress same formulations cannot be applied because...

A series of experiments investigating the dissipation wave energy by artificial Spartina alterniflora were completed using a large-scale flume at U.S. Army Engineer Research and Development Center. previous experiment identified trends in attenuation with respect to hydrodynamic plant parameters, changes spectral shape, parameterized bulk drag coefficient. However, height peak period indefinite unexplained behavior coefficient between submerged emergent conditions led subsequent that spanned...

Unstructured wave model grids in the nearshore coastal region provide flexibility and efficiency to resolve complex shorelines high-gradient zones drive circulation, setup wave-driven sediment transport. Recent improvements unstructured version of WAVEWATCH III (WW3) (WW3DG 2016) support application include an implicit solution scheme domain decomposition for multi-scale spatial coverage over approximately three orders magnitude. The hybrid approach parallelization involves spectral...