Coupling of Wave and Circulation Models for Predicting Storm-induced Waves, Surges, and Coastal Inundation PDF Download
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Author: Yunfeng Chen
Publisher:
ISBN:
Category : Ocean circulation
Languages : en
Pages :
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Book Description
The purpose of this study is to apply coupled systems for wave-current interaction for use in simulating and predicting storm-induced surges, waves and coastal inundation. Two coupled systems are used. One includes model components: ROMS (a three-dimensional ocean model) and SWAN (a third-generation numerical wave model). The other system is NearCoM (a nearshore community model) which couples SWAN and SHORECIRC (a quasi-3D nearshore circulation model). A coupled model system including ROMS and SWAN is based on MCT implementation. It is applied to Delaware Bay for wave and current simulation. The computational domain is a regional ocean scale domain covering the entire Delaware Bay and adjacent shelf region. Numerical results from the coupled system are compared with available wave and current data obtained from Delaware Bay Observing System (DBOS). Comparisons show good agreement between model results and observations. Strong tidal modulations of surface waves are identified in both model results and measured data. A nearshore community model system NearCoM couples SWAN and SHORECIRC models based on the Master Program implementation. The system is used in a series of numerical experiments that are carried out in an idealized, alongshore uniform domain, which includes a planar beach, land and shelf with constant slopes, in order to explore the response of storm-induced inundation, storm surges as well as waves to wave forcing and to different cyclone parameters through atmospheric forcing. Four sets of experiments are conducted to investigate four factors, radium of maximum wind, track of tropical cyclone, maximum wind speed as well as translation speed, respectively, in affecting storm surges and coastal inundation. Each experiment is conducted twice (with and without wave effect in the model system) to examine the wave setup effect. Coastal inundation, storm surge and wave are sensitive to all four factors. Wave setup always results in larger storm surge and inundation area.
Author: Yunfeng Chen
Publisher:
ISBN:
Category : Ocean circulation
Languages : en
Pages :
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Book Description
The purpose of this study is to apply coupled systems for wave-current interaction for use in simulating and predicting storm-induced surges, waves and coastal inundation. Two coupled systems are used. One includes model components: ROMS (a three-dimensional ocean model) and SWAN (a third-generation numerical wave model). The other system is NearCoM (a nearshore community model) which couples SWAN and SHORECIRC (a quasi-3D nearshore circulation model). A coupled model system including ROMS and SWAN is based on MCT implementation. It is applied to Delaware Bay for wave and current simulation. The computational domain is a regional ocean scale domain covering the entire Delaware Bay and adjacent shelf region. Numerical results from the coupled system are compared with available wave and current data obtained from Delaware Bay Observing System (DBOS). Comparisons show good agreement between model results and observations. Strong tidal modulations of surface waves are identified in both model results and measured data. A nearshore community model system NearCoM couples SWAN and SHORECIRC models based on the Master Program implementation. The system is used in a series of numerical experiments that are carried out in an idealized, alongshore uniform domain, which includes a planar beach, land and shelf with constant slopes, in order to explore the response of storm-induced inundation, storm surges as well as waves to wave forcing and to different cyclone parameters through atmospheric forcing. Four sets of experiments are conducted to investigate four factors, radium of maximum wind, track of tropical cyclone, maximum wind speed as well as translation speed, respectively, in affecting storm surges and coastal inundation. Each experiment is conducted twice (with and without wave effect in the model system) to examine the wave setup effect. Coastal inundation, storm surge and wave are sensitive to all four factors. Wave setup always results in larger storm surge and inundation area.
Author: Shih-Chun Hsiao
Publisher: MDPI
ISBN: 3036504966
Category : Technology & Engineering
Languages : en
Pages : 148
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Book Description
In this Special Issue, seven high-quality papers covering the application and development of many high-end techniques for studies on storm tides, surges, and waves have been published, for instance, the employment of an artificial neural network for predicting coastal freak waves [1]; a reproduction of super typhoon-created extreme waves [2]; a numerical analysis of nonlinear interactions for storm waves, tides, and currents [3]; wave simulation for an island using a circulation–wave coupled model [4]; an analysis of typhoon-induced waves along typhoon tracks in the western North Pacific Ocean [5]; an understanding of how a storm surge prevents or severely restricts aeolian supply [6]; and an investigation of coastal settlements and an assessment of their vulnerability [7].
Author: James S. Latimer
Publisher: Springer Science & Business Media
ISBN: 146146126X
Category : Science
Languages : en
Pages : 576
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Book Description
The U.S. Ocean Commission Report identified the need for regional ecosystem assessments to support coastal and ocean management. These assessments must provide greater understanding of physical and biological dynamics than assessments at global and national scales can provide but transcend state and local interests. This need and timeliness is apparent for Long Island Sound, where a multi-state regional restoration program is underway for America’s most urbanized estuary. Synthesis of the Long Island Sound ecosystem is needed to integrate knowledge across disciplines and provide insight into understanding and managing pressing issues, such as non-point sources of pollution, coastal development, global climatic change, and invasive species. Currently, there is a need for a comprehensive volume that summarizes the ecological and environmental dynamics and status of Long Island Sound and its myriad ecosystems. It has been 30 years since a comprehensive summary of Long Island Sound was prepared and 50 years since the pioneering work of Gordon Riley. Major advances in estuarine science are providing new insights into these systems, and yet, the condition of many estuaries is in decline in the face of continuing coastal development. There is an opportunity to lay a foundation for integrative coastal observing systems that truly provide the foundation for improved decision-making. This book will provide a key reference of our scientific understanding for work performed over the past three decades and guide future research and monitoring in a dynamic urbanized estuary.
Author: Juan Orlando González López
Publisher:
ISBN:
Category : Coupled mode theory
Languages : en
Pages : 136
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Book Description
Author: Jane Mckee Smith
Publisher: World Scientific
ISBN: 9814467561
Category : Technology & Engineering
Languages : en
Pages : 5136
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Book Description
This proceedings contains papers presented at the 31st International Conference on Coastal Engineering, which has held in Hamburg, Germany (31 August - 5 September 2008). The proceeding is divided into five parts: Waves; Long Waves, Nearshore Currents, and Swash; Sediment Transport and Morphology; Coastal Management, Environment, and Risk; and Coastal Structures. The papers cover a broad range of topics including theory, numerical and physical modeling, field measurements, case studies, design, and management. Coastal Engineering 2008 provides coastal engineers, scientists, and planners, with state-of-the-art information on coastal engineering and coastal processes.
Author: Zhuo Liu
Publisher:
ISBN:
Category : Flood forecasting
Languages : en
Pages :
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Book Description
Storm surge and inundation induced by hurricanes and nor'easters pose a profound threat to coastal communities and ecosystems. These storm events with powerful winds, heavy precipitation, and strong wind waves can lead to major flooding for cities along U.S. Coasts. Recent examples of Hurricane Irene (2011) in North Carolina and Virginia and Hurricane Sandy (2012) in New York City not only demonstrated the immense destructive power by the storms, but also revealed the obvious, crucial need for improved forecasting of storm tide and inundation. In part I, a large-scale unstructured-grid 3-D barotropic storm tide model SCHISM (Semi-implicit Cross-scale Hydroscience Integrated System Model) is developed with open ocean boundary aligning along the 60-degree West longitude to catch most Atlantic hurricanes that may make landfall along U.S. East and Gulf Coasts. The model, driven by high-resolution NAM (North America Mesoscale) and ECMWF (European Centre for Medium-Range Weather Forecasts) atmospheric fields, was coupled with Wind Wave Model (WWMIII) to account for wave effects, and used to simulate storm surge in 3-D barotropic mode rather than the traditional 2-D vertical average mode. For Hurricane Sandy, the fully coupled wave-current interaction 3-D model using ECMWF atmospheric forcing performs the best. The storm tide results match well with observation at all nine NOAA tidal gauges along the East Coast. The maximum total water level in New York City, is accurately simulated with absolute error of amplitude less than 8 cm, and timing difference within 10 minutes. The scenarios of "2-D" versus "3-D" and "with" versus "without" wind wave model were compared and discussed in details. Overall, the wave contribution amounts to 5-10% of surge elevation during the event. Also, the large-scale model with similar setup is applied to hindcasting storm tide during Hurricane Irene and the results are excellent when compared with observed water level along Southeast Coast and inside Chesapeake Bay. in part II, a high-resolution sub-grid inundation model ELCIRC-sub (Eulerian-Lagrangian CIRCulation) was developed from the original finite-volume-based ELCIRC model. It utilized the sub-grid method for imbedding high-resolution topography/bathymetry data into the traditional model grid and delivering the inundation simulation on the street level scale. The ELCIRC-sub contains an efficient non-linear solver to increase the accuracy and was executed in the MPI (Message Passing Interface) parallel computing platform to vastly enlarge the water shed coverage, and to expand the numbers of sub-grids allowed. The ELCIRC-sub is first validated with a wetting/drying analytic solution and then applied in New York City for Hurricane Sandy (2012). Temporal comparisons with NOAA and USGS water level gauges showed excellent performance with an average error on the order of 10 cm. It accurately captured the highest surge (during Hurricane Sandy) at Kings Point on both maximum surge height and the explosive surge profile. Spatial comparisons of the modeled peak water level at 80 locations around New York City showed an average error less than 13 cm. The modeled maximum modeled inundation extent also matched well with 80% of the FEMA flooding map. in terms of robustness and efficiency for practical application, ELCIRC-sub surpasses the prototype model UnTRIM2.
Author: Prashant K. Srivastava
Publisher: John Wiley & Sons
ISBN: 111935918X
Category : Science
Languages : en
Pages : 372
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Book Description
A comprehensive guide to managing and mitigating natural disasters Recent years have seen a surge in the number, frequency, and severity of natural disasters, with further increases expected as the climate continues to change. However, advanced computational and geospatial technologies have enabled the development of sophisticated early warning systems and techniques to predict, manage, and mitigate disasters.Techniques for Disaster Risk Management and Mitigation explores different approaches to forecasting disasters and provides guidance on mitigation and adaptation strategies. Volume highlights include: Review of current and emerging technologies for disaster prediction Different approaches to risk management and mitigation Strategies for implementing disaster plans and infrastructure improvements Guidance on integrating artificial intelligence with GIS and earth observation data Examination of the regional and global impacts of disasters under climate variability
Author: Intergovernmental Panel on Climate Change (IPCC)
Publisher: Cambridge University Press
ISBN: 9781009157971
Category : Science
Languages : en
Pages : 755
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Book Description
The Intergovernmental Panel on Climate Change (IPCC) is the leading international body for assessing the science related to climate change. It provides policymakers with regular assessments of the scientific basis of human-induced climate change, its impacts and future risks, and options for adaptation and mitigation. This IPCC Special Report on the Ocean and Cryosphere in a Changing Climate is the most comprehensive and up-to-date assessment of the observed and projected changes to the ocean and cryosphere and their associated impacts and risks, with a focus on resilience, risk management response options, and adaptation measures, considering both their potential and limitations. It brings together knowledge on physical and biogeochemical changes, the interplay with ecosystem changes, and the implications for human communities. It serves policymakers, decision makers, stakeholders, and all interested parties with unbiased, up-to-date, policy-relevant information. This title is also available as Open Access on Cambridge Core.
Author: Chester P. Jelesnianski
Publisher:
ISBN:
Category : Hurricane forecasting
Languages : en
Pages : 82
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Book Description
Author: D. T. Pugh
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 496
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Book Description
The aim of this book is to present modern tidal ideas to those who are not tidal specialists, but for whom some knowledge of tides is involved in their professional or scientific field. These include hydrographers, marine and coastal engineers, geologists who specialize in beach or marine sedimentation processes, and biologists concerned with the ways in which living organisms adapt to the rhythms of the sea. Modern practical studies are concerned with problems of marine transport, coastal erosion and the design of coastal defences against flooding. Interest in mean sea-level changes has recently been focused on the possibility of significant increases over the coming century as a result of global warming. Examples of applications from North America, Europe and other parts of the world are included.
