Managed Realignment A Viable Long Term Coastal Management Strategy

Managed realignment has been a preferred coastal management strategy in England in the 21st century and has also been increasingly implemented elsewhere. Climate change and environmental and financial concerns have led to a shift from the traditional ‘hold-the-line’ approach of coastal protection towards more flexible soft engineering options. Managed realignment is a relatively new soft engineering alternative aiming to provide sustainable flood risk management with added environmental and socio-economic benefits by creating space for coastal habitats to develop more dynamically. The natural adaptive capacity of coastal habitats and the ecosystem services they provide underpin the sustainability of managed realignment. However, many definitions of managed realignment exist and the understanding of what the term actually represents in practice has evolved through time and varies regionally. This book clarifies the definitions and terminology used in the literature and proposes that managed realignment is used as a general term that encompasses the many different methods of implementation worldwide, including: removal, breach and realignment of defences; controlled tidal restoration (which includes regulated tidal exchange and controlled reduced tide); and managed retreat. These methods of implementation are explained and illustrated with examples from around the world. In addition to a general overview of emerging policies and current practices, specific chapters discuss approaches adopted in different locations, including the Netherlands, the UK and Maui (USA). The UK experience is presented from the perspectives of three sectors: the National Trust (a charity organisation that owns 10% of the coastline of England and Wales), the Environment Agency (the organisation responsible for implementing government policy concerning flood and erosion risk) and a private consultant involved in the planning, design and delivery of managed realignment projects. Taking a wider perspective to consider the range of implementation methods, the viability of managed realignment as a long-term coastal management strategy is discussed. Recent national and regional strategies worldwide give managed realignment an increasing role in climate change and flood risk management. Gaining stakeholders and public support is fundamental for the success of emerging coastal management strategies. However, public perception and stakeholders engagement are often cited as a factor limiting the wider uptake of managed realignment. Results from a recent survey are used to benchmark the current thinking about the potential, the performance and the limitations of managed realignment in the UK and elsewhere. Current opinions about managed realignment are often not clearly defined, partly due to many projects being relatively recent. There is a general perception of great potential to provide sustainable flood risk management with added environmental benefits. However, the views of stakeholders are considerably more negative and notably contrast with the views of practitioners and researchers. The only clear and dominant agreement across all groups of respondents is that better understanding about the long-term evolution of sites is needed.

Living Shorelines: The Science and Management of Nature-based Coastal Protection compiles, synthesizes and interprets the current state of the knowledge on the science and practice of nature-based shoreline protection. This book will serve as a valuable reference to guide scientists, students, managers, planners, regulators, environmental and engineering consultants, and others engaged in the design and implementation of living shorelines. This volume provides a background and history of living shorelines, understandings on management, policy, and project designs, technical synthesis of the science related to living shorelines including insights from new studies, and the identification of research needs, lessons learned, and perspectives on future guidance. Makes recommendations on the correct usage of the term living shorelines Offers guidance for shoreline management in the future Includes lessons learned from the practice of shoreline restoration/conservation Synthesizes regional perspectives to identify strategies for the successful design and implementation of living shorelines Reviews specific design criteria for successful implementation of living shorelines Provides detailed discussions of social, regulatory, scientific and technical considerations to justify and design living shoreline projects International perspectives are presented from leading researchers and managers in the East, West and Gulf coasts of the United States, Europe, Canada, and Australia that are working on natural approaches to shoreline management. The broad geographic scope and interdisciplinary nature of contributing authors will help to facilitate dialogue and transfer knowledge among different disciplines and across different regions. This book provides coastal communities with the scientific foundation and practical guidance necessary to implement effective shoreline management that enhances ecosystem services and coastal resilience now and into the future.

This book examines a wide range of innovative approaches for coastal wetlands restoration and explains how we should use both academic research and practitioners’ findings to influence learning, practice, policy and social change. For conservationists, tidal flats and coastal wetlands are regarded as among the most important areas to conserve for the health of the entire oceanic environment. As the number of restoration projects all over the world increases, this book provides a unique assessment of coastal wetland restorations by examining existing community perceptions and by drawing on the knowledge and expertise of both academics and practitioners. Based on a four-year sociological study across three different cultural settings – England, Japan and Malaysia – the book investigates how citizens perceive the existing environment; how they discuss the risks and benefits of restoration projects; how perceptions change over time; and how governmental and non-governmental organisations work with the various community perceptions on the ground. By comparing and contrasting the results from these three countries, the book offers guidance for future conservation and restoration activities, with a specific view to working with local citizens to avoid conflict and obtain long-term investment. This book will be of great interest to students and scholars of coastal restoration, wetland conservation and citizen science, as well as environmental sociology and environmental management more broadly. It will also be of use to practitioners and policymakers involved in environmental restoration projects.

Significant changes are affecting coastlines around the world due to economic pressures and climate change. This book addresses the social, cultural and political context of the process of managed coastal realignment, the strategic abandonment of the coast, as a means of coping with these changes. With a specific focus on the Blackwater Estuary in Essex, Stuart Oliver analyses the cultural and social implications of managed retreat and proposes managed realignment as a practical way in which society can rethink itself, addressing the new realities of the environment and a move towards developing a more sustainable relationship with it.

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

This book identifies and discusses research directions, challenges and achievements in contemporary geography. It also documents the most current theoretical and methodological considerations undertaken by scientists representing various sub-disciplines of geography with particular reference to human geography. It was assumed that the thematic structure of the currently active International Geographical Union (IGU) problem commissions corresponds to the most relevant and current research directions in geography. Reflecting this assumption, the book consists of 14 chapters contributed by geographers representing 14 problem commissions of the IGU, which allows us to examine geography from different perspectives and to provide the reader with a complete overview of contemporary research issues in human geography. The first part discusses contemporary research problems and issues related to scientific methodology and achievements of selected geographical sub-disciplines, including urban geography, agricultural geography, transport geography, and political geography, among others. The second part focuses on the interdisciplinarity of geography and the topics of global dimension undertaken by geographers such as global change, GIS and geospatial technology, marginalization, and environmental change. This part also discusses the internal relations between geographical specializations and their links with other related sciences, including geology, sociology, and economics. The third part discusses the holistic approaches of geography applied to particular regions, territories, or conditions (Africa, costal systems, geomorphology and local development).

This book presents and discusses a strategy which includes four approaches to dealing with the risk of sea-level rise and other water hazards. It also offers opportunities for cities to explore urban extensions such as marine estates, aquatic food production systems, new sea related industries, maritime transport developments, new oceanic tourist attractions, and the designation of additional coastal ecological zones. The urban interface between Sea and Cities generates, therefore, both burning issues and valuable opportunities and raises the question of whether it is possible to solve the former by exploiting the latter?

This sobering examination of climate-change and the disastrous effects of rising sea levels explains what must be done to avoid the worst outcomes. By the end of this century, hundreds of millions of people living at low elevations along coasts will be forced to retreat to higher and safer ground. Because of sea-level rise, major storms will inundate areas farther inland and will lay waste to critical infrastructure, such as water-treatment and energy facilities, creating vast, irreversible pollution by decimating landfills and toxic-waste sites. Retreat from a Rising Sea explains in gripping terms what rising oceans will do to coastal cities—detailing the specific threats faced by Miami, New Orleans, New York, and Amsterdam. This policy-oriented book then lays out the drastic actions we must take now to remove vulnerable populations. Aware of the overwhelming social, political, and economic challenges that would accompany effective action, the authors consider the burden to the taxpayer and the logistics of moving landmarks and infrastructure, including toxic-waste sites. They also show readers the alternative: thousands of environmental refugees, with no legitimate means to regain what they have lost. The authors conclude with effective approaches for addressing climate-change denialism and powerful arguments for reforming U.S. federal coastal management policies.