modeling morphodynamic evolution in alluvial estuaries unesco ihe phd thesis

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Modeling Morphodynamic Evolution In Alluvial Estuaries

Author : Mick van der Wegen
ISBN : 9780203093344
Genre : Technology & Engineering
File Size : 88. 96 MB
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The main objective of this research is to investigate the governing processes and characteristics that drive morphodynamic evolution in alluvial estuaries by application of a process-based numerical model (Delft3D). It is of utmost importance to understand estuarine processes so that impact of human interference (like dredging and land reclamation) and long-term changes (like sea level rise) can be evaluated. The research addresses a number of cases ranging from an rectangular basins to real estuaries like the Western Scheldt in the Netherlands or San Pablo Bay in California. The more schematized approach allow to study morphodynamic evolution over several millennia under constant forcing and answers more fundamental questions related to conditions of equilibrium and related time scales. The more realistic cases give insight into the skill of the approach in predicting decadal morphodynamic developments. More processes are included to mimic realistic conditions and model results are compared to bathymetric measurements over the last century. The research shows that the modeling approach is good capable of describing stable morphodynamic calculations over a timescale of millennia with patterns similar to patterns observed in reality. Additionally, the approach shows that it is possible to predict decadal morphodynamic developments in real estuaries with significant skill.

Coastal Sediments 2015

Author : Ping Wang
ISBN : 9789814689984
Genre : Technology & Engineering
File Size : 55. 41 MB
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This Proceedings contains over 260 papers on cutting-edge research presented at the eighth international Symposium on Coastal Sediment Processes, held May 11 ? 15, 2015, in San Diego, California, USA. This technical specialty conference was devoted to promoting an interdisciplinary exchange of state-of-the-art knowledge among researchers in the fields of coastal engineering, geology, oceanography, and related disciplines, with the theme of Understanding and Working with Nature. Focusing on the physical aspects of the sediment processes in various coastal environments, this Proceedings provides findings from the latest research and newest engineering applications. Sessions covered a wide range of topics including barrier islands, beaches, climate and sea level, cohesive and noncohesive sediments, coastal bluffs, coastal marsh, dredged sediments, inlet and navigation channels, regional sediment management, river deltas, shore protection, tsunamis, and vegetation-sediment interaction. Several special sessions included: Relevant science for changing coastlines: A Tribute to Gary Griggs; North Atlantic Coast Comprehensive Study and post-super-storm Sandy work; long-term coastal evolution; barrier islands of Louisiana; sea-level rise and super storms in a warming world; predicting decadal coastal geomorphic evolution; and contrasting Pacific coastal behavior with El Ni¤o Southern Oscillation (ENSO), are also featured. Contents:Keynote Addresses:Coastal Evolution and Human-Induced Sea-Level Rise: History and Prognosis (Robert J Nicholls)Addressing Local and Global Sediment Imbalances: Coastal Sediments as Rare Minerals (Dano Roelvink)Barrier Islands:Complex Responses of Barriers to Sea-Level Rise Emerging from a Model of Alongshore-Coupled Dynamic Profile Evolution (Andrew D Ashton & Jorge Lorenzo-Trueba)Deformation of an Isolated Offshore Sand Bar on Tidal Flat and Mergence with Beach Due to Waves (Toshiro San-Nami, Takaaki Uda, Shiho Miyahara & Masumi Serizawa)Beaches:Modeling Gravel Barrier Resilience During Storms with XBeach-G: The Role of Infiltration (Robert Mccall, Gerhard Masselink, Timothy Poate & Dano Roelvink)Numerical Investigation of Beach Profile Evolution Using a New Sediment Concentration Model (R Rahman, R Jayaratne, A E Tejada-Martinez & P Wang)Beach Changes Triggered by Imbalance of Longshore Sand Transport and Ground Subsidence on South Kujukuri Beach (Takaaki Uda, Ryoji Yoshida & Takahiro Todoroki)Climate and Sea Level:What Do We Do Now? (J William Kamphuis)A New Profile Fitting Approach to Estimating Beach Recession by Sea Level Rise (Wonchul Cho, Jong Sung Yoon, Dong Soo Hur & Jung L Lee)Coastal Bluffs:Evaluating Changes to Arctic Coastal Bluffs Using Repeat Aerial Photography and Structure-From-Motion Elevation Models (Ann E Gibbs, Matt Nolan & Bruce M Richmond)Puget Sound Feeder Bluff Mapping: Compiling and Completing a Sound-Wide Geomorphic Dataset (Andrea Maclennan, Jim Johannessen & Hugh Shipman)Coastal Marsh and Vegetation:Hydrodynamics and Sediment Dynamics in an Ice Covered Tidal Flat (Urs Neumeier & Colette Cheng)Mechanics of Sediment Suspension and Transport Within a Fringing Reef (Andrew W M Pomeroy, Ryan J Lowe, Marco Ghisalberti, Curt D Storlazzi, Michael Cuttler & Graham Symonds)Cohesive and Noncohesive Sediments:In-Situ Measurement of Erosion of Mixed Sand-Mud Sediments (Kevin B Briggs & J Calantoni)Stochastic Model of Fluid Mud Transport Under Wave and Current (Yasuyuki Nakagawa, Kazuo Nadaoka, Hiroshi Yagi, Yasuo Nihei & Hiroshi Uchikawa)Dredged Sediment:Numerical Model Studies to Support the Sustainable Management of Dredge Spoil Deposition in a Complex Nearshore Environment (Simon Weppe, Peter Mccomb & Lincoln Coe)Life Cycle Assessment for Dredged Sediment Placement Strategies (Matthew E Bates, Cate Fox-Lent, Linda Seymour, Ben A Wender & Igor Linkov)Inlet and Navigation Channels:A Tale of Five Harbours: Fluvial vs. Longshore Sediment Sources in Great Lakes Harbours (J Doucette & C Pinilla)Comparing Two Numerical Models in Simulating Hydrodynamics and Sediment Transport at a Dual Inlet System, West-Central Florida (Ping Wang, Jun Cheng, Mark H Horwitz & Kelly R Legault)Regional Sediment Management:Engineering with Nature: Nearshore Berm Placements At Fort Myers Beach And Perdido Key, Florida, USA (Katherine E Brutsch‚, Ping Wang, Julie D Rosati & Cheryl E Pollock)Preview Analysis to Sand Bypass System Design in the Port of Sisal, Yucat n (P E Reyes, P Salles, J L¢pez & E Casillas)River Deltas:Freshwater Vegetation Influence on Sediment Spatial Distribution in River Delta During Flood (W Nardin, D A Edmonds & S Fagherazzi)Observation of Sediment Processes of a Flood Event at the River Mouth of Tenryu, Japan with X-Band Radar and In Situ Measurements (Satoshi Takewaka, Takumi Okabe, Shigeru Kato & Shinichi Aoki)Shore Protection:Field Observations of Tidal Flow Separation at a Mega-Scale Beach Nourishment (Max Radermacher, Wilmar Zeelenberg, Matthieu De Schipper & Ad Reniers)Ecologically-Oriented Coastal Engineering: A New Approach for Bird Island Restoration and Avian Conservation at Sundown Island, Matagorada Bay, Texas (Cris Weber, Thomas Dixon, Dave Buzan, Juan Moya & Iliana Pe¤a)Tsunamis:Hindcast of Bathymetry Change in Oarai Port, Japan, Caused by the 2011 Tsunami (Yoshiaki Kuriyama, Yoshiyuki Uno & Kazuhiko Honda)Tsunami Sediment Analysis Based on Luminescence Measurement (Shinji Sato, Kanto Nishiguchi & Yusuke Yamanaka)Barrier Island of Louisiana:Mississippi River Delta Plain Barrier Island Sediment Dynamics and Implications for Managing Coastal Transgressionion (Michael D Miner, Ioannis Y Georgiou, Mark Kulp & Duncan Fitzgerald)Differential Sediment Consolidation Associated with Barrier Beach Restoration: Caminada Headland, South Louisiana (Mark R Byrnes, Chester Hedderman, Michael Hasen, P E, Harry Roberts, Syed Khalil & Steven G Underwood)Constrasting Pacific Coastal Behaviour with Enso:Constrasting Pacific Coastal Behaviour with Enso Modeling Interannual to Multi-Decadal Shoreline Rotations of Headland-Bounded Littoral Cells (Dylan Anderson & Peter Ruggiero)Wave Climate Change Associated with Enso Modoki and Tropical Expansion in Southeast Australia and Implications for Coastal Stability (Thomas R Mortlock & Ian D Goodwin)Long Term Coastal Evolution:Predicting Centuries of Morphodynamics in San Pablo Bay, California: Hindcast and Forecast Including Sea Level Rise (Mick van der Wegen, Bruce E Jaffe & Dano Roelvink)Modelling Long-Term Morphodynamics in Practice: Uncertainties and Compromises (J J Williams, T Conduch‚ & L S Esteves)North Atlantic Coast Comprehensive Study and Post Supper Storm Sandy Work:Modeling the Effects of Hard Structures on Dune Erosion and Overwash ? A Case Study of the Impact of Hurricane Sandy on the New Jersey Coast (C M Nederhoff, Q J Lodder, M Boers, J P Den Bieman & J K Miller)Conceptual Regional Sediment Budget for the US North Atlantic Coast (Julie Dean Rosati, Ashley E Frey, Alison S Grzegorzewski, Coraggio Maglio, Andrew Morang & Robert C Thomas)Predicting Decadal Coastal Geomorphic Evolution:Decadal Scale Shoreline Change Arises from Large-Scale Interactions, While Small-Scale Changes are Forgotten: Observational Evidence (A B Murray, E D Lazarus, L J Moore, J Lightfoot, A D Ashton, D E Mcnamara & K Ells)Equilibrium-Based Foreshore Beach Profile Change Model for Long-Term Data (Masayuki Banno, Yoshiaki Kuriyama & Noriaki Hashimoto)Relevant Science for Changing Coastline a Tribute to Gary Griggs:Quantifying the Geomorphic Resiliency of Barrier Island Beaches (Cheryl J Hapke, Owen T Brenner & Rachel E Henderson)Sedimentology of Intertidal Sediment Deposits After Dam Removal on a Coastal River (Ian M Miller, Andrea Ogston & Julia Dolan)Sea Level Rise and Super Storm in a Warming World:Multi-Annual Sand and Gravel Beach Response to Storms in the Southwest of England (Tim Scott, Gerd Masselink, Tim O'hare, Mark Davidson & Paul Russell)Regional Variability in Atlantic Storm Response Along the Southwest Coast of England (Gerd Masselink, Tim Scott, Daniel Conley, Mark Davidson & Paul Russell)and other papers Readership: Graduate students and research in coastal engineering. Key Features:Most up-to-date information and knowledgeBroad world-wide attendanceIn depth technical focus. These proceedings have and should continue to serve as widely used reference booksKeywords:Coastal Engineering;Coastal Geology;Coastal Processes;Shore Protection;Sediment Transport;Beach Processes;Coastal Morphology

Modelling Morphological Response Of Large Tidal Inlet Systems To Sea Level Rise

Author : Pushpa Kumara Dissanayake
ISBN : 9781466552807
Genre : Technology & Engineering
File Size : 24. 13 MB
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The research presented in this work qualitatively investigates the morphodynamic response of a large tidal inlet/basin system to future relative sea level rise (RSLR) using the state-of-the-art Delft3D numerical model. Understanding the potential impacts of RSLR on these systems is a prerequisite for their sustainable management due to their rich bio-diversity and the increase in economic activities and local communities in recent decades. The adopted approach used a highly schematised model domain analogous to the Ameland inlet in the Dutch Wadden Sea. Model simulations were undertaken applying tidal and wave boundary forcings with three IPCC projected RSLR scenarios (no RSLR, low RSLR and high RSLR). Predicted inlet evolution indicated a channel/shoal pattern typically observed at the Ameland inlet. RSLR enhances the existing flood-dominance of the system leading to erosion on the ebb-tidal delta and accretion in the basin. Under the no RSLR case, resulting bed evolution of the process-based model (Delft3D) tends to agree with empirical-equilibrium relations of the ASMITA model. Application of the low RSLR scenario resulted in quite stable tidal flat evolution. Model simulations with the high RSLR scenario indicated disappearing the tidal flats over time and turning the system into a lagoon. Applying nourishment hardly compensated the RSLR induced sediment demand of tidal flat evolution.

Salt Intrusion Tides And Mixing In Multi Channel Estuaries

Author : Anh Duc Nguyen
ISBN : 1439828342
Genre : Science
File Size : 30. 89 MB
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Multi-channel estuaries, such as the Mekong Delta in Vietnam and the Scheldt in the Netherlands, have characteristics of both the river and the sea, forming a unique environment influenced by tidal movements of the sea and freshwater flow of the river. This study addresses a number of knowledge gaps in multi-channel estuaries by developing a predictive analytical approach for salinity intrusion and discharge estimate in multi-channel estuaries. The new approach agrees well with 1-D hydrodynamic models and observations, indicating its applicability in practice. Most importantly, the study has successfully developed a new theory and a new equation to quantify tidal pumping due to ebb-flood channel residual circulation and the related salt dispersion.

Modelling Floodplain Biogeomorphology

Author : M. Baptist
ISBN : STANFORD:36105114777316
Genre : Nature
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There is an increasing awareness that rivers need more room in order to safeguard flood safety under climate change conditions. Contemporary river management is creating room in the floodplains and allowing, within certain bounds, natural processes of sedimentation and erosion. One of the aims is to restore dynamic conditions, so as to get a sustainable and more diverse river ecosystem that can cope with floods. This new approach requires understanding of the interaction between the biotic and abiotic components of river systems. More specifically, it requires a better understanding of the interaction between flora and fauna and geomorphological factors. This is the object of investigation of the interdiscipline of biogeomorphology. Modelling biogeomorphological processes in river floodplains is the topic of this thesis.

The Architect S Brain

Author : Harry Francis Mallgrave
ISBN : 9781118078679
Genre : Architecture
File Size : 57. 39 MB
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The Architect's Brain: Neuroscience, Creativity, and Architecture is the first book to consider the relationship between the neurosciences and architecture, offering a compelling and provocative study in the field of architectural theory. Explores various moments of architectural thought over the last 500 years as a cognitive manifestation of philosophical, psychological, and physiological theory Looks at architectural thought through the lens of the remarkable insights of contemporary neuroscience, particularly as they have advanced within the last decade Demonstrates the neurological justification for some very timeless architectural ideas, from the multisensory nature of the architectural experience to the essential relationship of ambiguity and metaphor to creative thinking

The Impact Of Soil Erosion In The Upper Blue Nile On Downstream Reservoir Sedimentation

Author : Yasir Salih Ahmed Ali
ISBN : 1138027421
Genre : Science
File Size : 34. 39 MB
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Population growth in the Blue Nile Basin has led to fast land-use changes from forest to agricultural land, which resulted in speeding up the soil erosion processes producing highly negative impacts on the local soil fertility and agricultural productivity. The eroded sediment is transported downstream by water and sinks in the lower basin where it significantly reduces reservoir storage and irrigation canals capacity. The only effective solution to mitigate the sedimentation problem is to limit the sediment inputs from upstream by locally implementing erosion control practices. However, given the vastness and remoteness of the involved areas, this first requires the knowledge of the most critical zones. The book identifies the sources of the sediment depositing in the Lower Blue Nile Basin and quantifies the amounts involved providing essential information for the planning and implementation of any interventions aiming at reducing soil erosion. The methods used consist of extensive field work covering most of the basin, watershed, hydrodynamic and morphodynamic modelling and, for the first time, the mineralogical analysis of the sediment at the sources and sinks. The method is successful in indentifying the areas providing most of the transported sediment, where it is recommended to start with erosion control practices.

Comprehensive Flood Risk Management

Author : Frans Klijn
ISBN : 9780203374511
Genre : Technology & Engineering
File Size : 48. 52 MB
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Flood risk management policy across the European Union is changing, partly in response to the EU Floods Directive and partly because of new scientific approaches and research findings. It involves a move towards comprehensive flood risk management, which requires bringing the following fields/domains closer together: the natural sciences, social sciences and arts; science, policy and practice; and engineering, spatial planning and governance. Naturally, this involves preventive fl ood risk management and flood event management, as well as learning from the past and considering future global change. Comprehensive Flood Risk Management includes about 200 contributions drawn from the 2nd European Conference on Flood Risk Management FLOODrisk2012 (Rotterdam, the Netherlands, 19-23 November 2012). This conference provided a forum for scientists, policy makers, researchers, and practitioners to discuss the practical implications of the latest research findings and to inventory which questions the research community still needs to answer. FLOODrisk2012, the successor of the 2008 conference held in Oxford, UK, was the initiative of Deltares, Delft, the Netherlands. Comprehensive Flood Risk Management includes the latest results of numerous projects issuing from the European Commission’s Sixth and Seventh Framework Programmes, as well as results of many other national and international research projects from Europe and elsewhere in the world. The book features contributions from natural and social sciences, engineering and spatial planning, as well as practical experiences of policy makers and designers, and covers all aspects of fl ood risk assessment and management: hydraulic loads, reliability of defences and their monitoring, flood hazard analysis, inundation modelling, hazard and risk mapping, estimating economic damage and loss-of-life and integrated flood risk analysis, as well as flood protection, damage and exposure reduction, reducing social vulnerability, policy instruments (zoning, regulations), integrated flood risk management planning and long-term planning for global change, flood prediction and early warning, evacuation and rescue and other aspects of flood event management. Finally, the book discusses risk communication, participatory planning, governance issues, and experiences with the EU Floods Directive. Comprehensive Flood Risk Management will be of interest to a readership ranging from scientists to practitioners involved in fl ood risk management, and consisting of researchers, consultants, engineers, spatial planners, postgraduate lecturers, students, civil servants, and policy makers.

Sustainable Hydraulics In The Era Of Global Change

Author : Sébastien Erpicum
ISBN : 9781498781497
Genre : Science
File Size : 38. 25 MB
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In an increasingly urbanized world, water systems must be designed and operated according to innovative standards in terms of climate adaptation, resource efficiency, sustainability and resilience. This grand challenge triggers unprecedented questions for hydro-environment research and engineering. Shifts in paradigms are urgently needed in the way we view (circular) water systems, water as a renewable energy (production and storage), risk management of floods, storms, sea level rise and droughts, as well as their consequences on water quality, morphodynamics (e.g., reservoir sedimentation, scour, sustainability of deltas) and the environment. Addressing these issues requires a deep understanding of basic processes in fluid mechanics, heat and mass transfer, surface and groundwater flow, among others. Sustainable Hydraulics in the Era of Global Change: Advances in Water Engineering and Research unveils latest research achievements and innovations which were presented at the 4th European Congress of the International Association for Hydro-environment engineering and Research (IAHR), hold in Liege (Belgium). These new developments are based on state-of-the-art modelling technologies which are supported by the exponentially growing availability of data and computation power. Innovative synergies emerge between numerical modelling and experimental techniques, as well as field monitoring. Unique opportunities are created by multi-, inter- and trans-disciplinary approaches, bridging hydro-environment engineering and research with climate sciences, ecology, spatial planning, sociology. Sustainable Hydraulics in the Era of Global Change: Advances in Water Engineering and Research will serve as a reference for postgraduate, professionals and decision-makers involved in various water-related sectors, such as hydraulic engineering, fluvial hydraulics, coastal engineering, water resources management, and renewable energy.

40 Days With The Holy Spirit

Author : R.T. Kendall
ISBN : 9781621369783
Genre : Religion
File Size : 20. 36 MB
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Are you hungry for more of the Holy Spirit in your life? Are you ready for a personal encounter with Him that will change your life? The Holy Spirit is greater than our theology, bigger than our denominations, and truly beyond anything we can imagine. In Forty Days With the Holy Spirit, respected preacher and theologian R. T. Kendall takes you on a journey through daily readings from his book, Holy Fire, that will: · Present inspiring insight into the Holy Spirit · Provide a scriptural basis for deeper study · Direct your prayer time as you seek to know and encounter Him in a fresh new way · Provide journaling space to record your experiences with Him If you desire to increase your knowledge of this most misunderstood member of the trinity, or if you long to experience His presence in your life in a deeper way than ever before, this book is for you.

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