Article
Engineering, Civil
Benjamin Pachev, Prateek Arora, Carlos del-Castillo-Negrete, Eirik Valseth, Clint Dawson
Summary: Storm surge is a significant natural hazard in coastal regions, and accurate models are needed for predicting its impact. Traditional ocean circulation models are computationally expensive, leading to the development of data-driven surrogate models. This study presents a novel surrogate model for predicting peak storm surge, which shows comparable accuracy to traditional models but with much faster computational speed. The model is tested in Texas and Alaska, yielding promising results.
COASTAL ENGINEERING
(2023)
Article
Engineering, Marine
Yutao Chi, Zengrui Rong
Summary: The study utilized a wave-current coupled model to simulate storm surges and waves caused by 98 typhoons affecting the Changjiang River Estuary over the past 32 years. Differences were found in results between ERA reanalysis and synthetic winds, with higher risk identified in Hangzhou Bay and the coast of Zhejiang. Wave effects were found to contribute to 2-12.5% of extreme surge levels.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Engineering, Marine
Dongxue Mo, Ning Wang, Po Hu, Yijun Hou
Summary: This study used a coupled model to analyze the dynamic processes during typhoons and extratropical storms near the Shandong Peninsula. The results showed that the interaction between water level change and waves mainly occurred in the nearshore zone, while wave-current interaction mainly occurred in the offshore zone. The modulations of water level and wave height were strongly dependent on storm characteristics and coastal features.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Civil
Haoxuan Du, Pubing Yu, Lei Zhu, Kai Fei, Liang Gao
Summary: Portraying wind fields is crucial for storm surge simulation, including storm track, wind speed, wind speed radius, and pressure drop. This study evaluates the performances of five parametric wind models in predicting storm surges in the Pearl River Estuary. The synthetic wind fields show that different models produce wind fields with diverse structures, each with its own focus and advantages. The selection of wind models significantly affects wind and surge estimates, with potential surge height errors greater than 1.45m. The study also highlights the uncertainties in storm track parameters and drag coefficient. The proposed model by Emanuel and Rotunno (2011) yields accurate estimates among the selected wind models, while small track changes and drag coefficient variations contribute to significant uncertainty.
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS
(2023)
Article
Computer Science, Interdisciplinary Applications
Eirik Valseth, Clint Dawson, Edward Buskey
Summary: This study examines the potential impact of deepening the Corpus Christi Ship Channel on hurricane storm surge in the region of Corpus Christi and Port Aransas, Texas. Using numerical mathematical models, the study compares the effects of current and proposed future channels on storm surge magnitude. The results indicate that the changes to maximum storm surge are minimal, with some localized areas showing a potential increase of up to 30 centimeters in a synthetic extreme storm scenario.
JOURNAL OF COMPUTATIONAL SCIENCE
(2023)
Article
Environmental Sciences
Nicola Rossi, Mario Bacic, Meho Sasa Kovacevic, Lovorka Libric
Summary: This study focuses on developing fragility curves for levee slope stability and piping as failure mechanisms, providing crucial insights into the vulnerability of levees exposed to rising water levels.
Article
Engineering, Marine
Moleni Tu'uholoaki, Antonio Espejo, Moritz Wandres, Awnesh Singh, Herve Damlamian, Zulfikar Begg
Summary: The South Pacific region is vulnerable to extreme total water levels due to the lack of wide continental shelves that can dissipate waves. This study examined the waves and storm surge induced by severe TC Harold in 2020 on Tongatapu using advanced hydrodynamic and wave models. The contributions of winds, atmospheric pressure, waves, and wave-radiation-stress-induced setup to extreme total water levels were analysed. The suite of models used in this study can support the Tonga Meteorological Service Tropical Cyclone Early Warning System.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Marine
Linoj Vijayan, Wenrui Huang, Mengdi Ma, Eren Ozguven, Mahyar Ghorbanzadeh, Jieya Yang, Zhaoqing Yang
Summary: Dynamically-coupled SWAN and ADCIRC models have been used to improve the prediction of extreme waves and storm surges in the Gulf of Mexico caused by hurricanes and sea level rise. The performance of the models was evaluated using Hurricane Michael as a case study, and the results showed that the dynamically-coupled models significantly increased the accuracy of the simulations compared to the stand-alone SWAN model.
Article
Geosciences, Multidisciplinary
Yuxing Wang, Zhixing Guo, Shuxian Zheng, Min Zhang, Xiejun Shu, Jun Luo, Liguo Qiu, Ting Gao
Summary: A risk assessment approach for typhoon-induced storm surge disasters is introduced in this study, with detailed simulation, vulnerability assessment, and risk mapping conducted for the coastal areas of Wenchang City in Hainan Province. The results indicate high risks of typhoon-induced storm surge in the northeast and east coastal areas of Wenchang.
GEOMATICS NATURAL HAZARDS & RISK
(2021)
Article
Geosciences, Multidisciplinary
Linoj Vijayan, Wenrui Huang, Kai Yin, Eren Ozguven, Simone Burns, Mahyar Ghorbanzadeh
Summary: A numerical modeling study was conducted to simulate storm surge during Hurricane Michael in 2018, using the ADCIRC hydrodynamic model with high-resolution mesh. Two parametric wind models, Holland 1980 and Holland 2010, were evaluated for their accuracy in predicting storm surge, with results showing errors between 1% and 3.7% for maximum water levels in Mexico Beach. The study suggests that the Holland 1980 wind model with a 64-knot wind speed radius for parameter estimation produced the lowest error of 1%.
Article
Environmental Sciences
Abram Musinguzi, Lokesh Reddy, Muhammad K. Akbar
Summary: This study evaluates the contribution of waves to storm surges predicted in Hurricane Irma hindcast, using ADCIRC+SWAN and ADCIRC models. Waves were found to have the largest contribution to total water levels on the south and northeast coasts, while the continental shelf on Florida's west coast plays a critical role in decreasing significant wave heights and sheltering coastal areas from large wave effects.
Article
Geosciences, Multidisciplinary
Benjamin Pachev, L. Ruby Leung, Tian Zhou, Clint Dawson
Summary: Tropical cyclones pose a major threat to coastal communities and cause significant economic damage. Flooding due to storm surge and heavy rainfall is the main cause of damage. Accurate modeling of flooding hazards requires considering all relevant factors.
Article
Meteorology & Atmospheric Sciences
Johnathan L. Woodruff, J. C. Dietrich, D. Wirasaet, A. B. Kennedy, D. Bolster, Z. Silver, S. D. Medlin, R. L. Kolar
Summary: Coastal flooding models are used to predict inundation during storms, and the need for faster flooding predictions that also represent flow pathways and barriers can be addressed through subgrid corrections. Recent studies have shown a significant decrease in run time by implementing subgrid corrections in a finite-element-based shallow water model, improving accuracy and efficiency of inundation predictions by increasing model speed by 10 to 50 times.
Article
Green & Sustainable Science & Technology
Niklas Schwiersch, Juergen Stamm
Summary: Holistic flood risk management aims to minimize flood risk in an entire river basin by considering flooding probability and its consequences in planning flood risk management measures. This study quantifies the variability of landside slope failure probability on homogeneous river levees using Monte Carlo simulation for the first time, providing insights for adjusting local failure probability to limit flood risk. The methodology presented may be expanded to include structured cross-sections or additional failure mechanisms in the future for a more comprehensive understanding of landward slope failure.
Article
Chemistry, Multidisciplinary
Kelin Hu, Ehab Meselhe, Rachel Rhode, Natalie Snider, Alisha Renfro
Summary: The study found that levee openings in coastal Louisiana have limited impact on reducing storm surge in adjacent basins, mainly due to complex interactions between the surge and the flow of the Mississippi River. The openings were not effective in reducing storm surge during Hurricane Isaac due to diversion of river water into adjacent basins, essentially defeating their intended purpose.
APPLIED SCIENCES-BASEL
(2022)
Article
Meteorology & Atmospheric Sciences
Ajimon Thomas, J. C. Dietrich, T. G. Asher, M. Bell, B. O. Blanton, J. H. Copeland, A. T. Cox, C. N. Dawson, J. G. Fleming, R. A. Luettich
Article
Engineering, Civil
Alireza Gharagozlou, Joel Casey Dietrich, Ayse Karanci, Richard A. Luettich, Margery F. Overton
COASTAL ENGINEERING
(2020)
Article
Ecology
R. Cyriac, J. C. Dietrich, C. A. Blain, C. N. Dawson, K. M. Dresback, A. Fathi, M. Bilskie, H. C. Graber, S. C. Hagen, R. L. Kolar
REGIONAL STUDIES IN MARINE SCIENCE
(2020)
Article
Construction & Building Technology
Carol C. Massarra, Carol J. Friedland, Brian D. Marx, J. Casey Dietrich
JOURNAL OF PERFORMANCE OF CONSTRUCTED FACILITIES
(2020)
Article
Geosciences, Multidisciplinary
C. A. Rucker, N. Tull, J. C. Dietrich, T. E. Langan, H. Mitasova, B. O. Blanton, J. G. Fleming, R. A. Luettich
Summary: This research explores downsizing methods that include simplified physics to improve accuracy during coastal storms. Evaluations against forecasts and hindcasts of Hurricane Florence demonstrate that the head loss method produces downsized flooding extents closely matching predictions from higher-resolution, full-physics models.
Article
Water Resources
Amirhosein Begmohammadi, Damrongsak Wirasaet, Zachariah Silver, Diogo Bolster, Andrew B. Kennedy, J. C. Dietrich
Summary: This study proposes a method based on cell and edge clones to systematically remove artificial cross flows in subgrid modeling. The algorithm offers an extension allowing clones to be further split and merged based on surface elevation, aimed at accommodating the possibility of subgrid barriers being inundated during extreme events. The performance of the algorithm is demonstrated through a series of test cases, showing significant improvements over existing methodologies.
ADVANCES IN WATER RESOURCES
(2021)
Article
Computer Science, Interdisciplinary Applications
Keith J. Roberts, J. Casey Dietrich, Damrongsak Wirasaet, William J. Pringle, Joannes J. Westerink
Summary: Coastal circulation models have evolved to predict storm-induced flooding by including more overland regions, improving real-time forecasting and long-term mitigation. However, this evolution poses challenges for parallelization in an HPC environment.
ENVIRONMENTAL MODELLING & SOFTWARE
(2021)
Article
Marine & Freshwater Biology
Alireza Gharagozlou, J. Casey Dietrich, T. Chris Massey, Dylan L. Anderson, Jessica F. Gorski, Margery F. Overton
Summary: Barrier islands are crucial coastal defense systems, but they often experience erosion during storms which can lead to significant changes in hydrodynamics and morphodynamics. This study in North Carolina explores the formation of a breach on Hatteras Island during a storm, and how it affects the circulation in the region. High-fidelity numerical models show that the breach has region-scale effects on flooding, increasing local water levels by as much as 1.5 m.
ESTUARINE COASTAL AND SHELF SCIENCE
(2021)
Article
Meteorology & Atmospheric Sciences
Johnathan L. Woodruff, J. C. Dietrich, D. Wirasaet, A. B. Kennedy, D. Bolster, Z. Silver, S. D. Medlin, R. L. Kolar
Summary: Coastal flooding models are used to predict inundation during storms, and the need for faster flooding predictions that also represent flow pathways and barriers can be addressed through subgrid corrections. Recent studies have shown a significant decrease in run time by implementing subgrid corrections in a finite-element-based shallow water model, improving accuracy and efficiency of inundation predictions by increasing model speed by 10 to 50 times.
Article
Meteorology & Atmospheric Sciences
Ajimon Thomas, J. C. Dietrich, M. Loveland, A. Samii, C. N. Dawson
Summary: This research proposes a new approach that maps coarse mesh predictions onto a fine mesh with increased resolution during simulation, increasing efficiency and eliminating refinement decisions during the simulation process. Results show efficiency gains of up to 53 percent for historical storms, with minimal accuracy losses compared to static simulations.
Article
Construction & Building Technology
Omar M. Nofal, John W. van de Lindt, Trung Q. Do, Guirong Yan, Sara Hamideh, Daniel T. Cox, J. Casey Dietrich
Summary: Hurricanes can cause damage to the built environment through a combination of storm surge, waves, and wind loadings. Previous studies focused on modeling individual hazards rather than considering the combined effects of wind, surge, and waves on the entire building system. The development of a robust multihazard hurricane risk analysis model incorporating high-resolution hazard, exposure, and vulnerability models fills this research gap.
JOURNAL OF STRUCTURAL ENGINEERING
(2021)
Article
Engineering, Civil
Ajimon Thomas, J. C. Dietrich, C. N. Dawson, R. A. Luettich
Summary: High-resolution models are needed for predicting storm surge and flooding to capture fine-scale variations in coastal regions. However, real-time forecasting models often sacrifice resolution for efficiency. This study compares models of different resolutions and finds that a production-grade model with lower resolution performs better in conveying information to inland regions and improving prediction accuracy.
JOURNAL OF WATERWAY PORT COASTAL AND OCEAN ENGINEERING
(2022)
Article
Geosciences, Multidisciplinary
A. Gharagozlou, D. L. Anderson, J. F. Gorski, J. C. Dietrich
Summary: In this study, an efficient predictive model was developed to forecast the morphologic response of beaches to storms. The model was trained using a numerical model and a parameterized function was used to emulate the post-storm beach state. In testing, the model accurately predicted beach profile erosion. The model shows promise for future predictions of storm-induced beach erosion.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2022)
Article
Engineering, Civil
Amirhosein Begmohammadi, Damrongsak Wirasaet, Autumn Poisson, Johnathan L. L. Woodruff, J. Casey Dietrich, Diogo Bolster, Andrew B. B. Kennedy
Summary: Inundation models, representing coastal regions with a grid of computational points, made advancements by incorporating subgrid corrections based on coarse grid solutions. This study extended a storm surge model with numerical approaches to include subgrid corrections. The extensions were limited to maintain continuity and added a finite volume method for incorporating corrections to mass and momentum equations using high-resolution ground surface elevations, as well as modifying the no-slip condition for flows in channels with widths comparable to cell size. Numerical results demonstrated improved accuracy of coastal flooding predictions with low additional computational cost.
COASTAL ENGINEERING JOURNAL
(2023)
Article
Construction & Building Technology
Carol C. Massarra, Carol J. Friedland, Brian D. Marx, J. Casey Dietrich
FRONTIERS IN BUILT ENVIRONMENT
(2020)