modelling morphological response of large tidal inlet systems to sea level rise unesco ihe phd thesis

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

Author : Pushpa Kumara Dissanayake
ISBN : 9781466552807
Genre : Technology & Engineering
File Size : 69. 83 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.

Springer Handbook Of Ocean Engineering

Author : Manhar R. Dhanak
ISBN : 9783319166490
Genre : Technology & Engineering
File Size : 69. 62 MB
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This handbook is the definitive reference for the interdisciplinary field that is ocean engineering. It integrates the coverage of fundamental and applied material and encompasses a diverse spectrum of systems, concepts and operations in the maritime environment, as well as providing a comprehensive update on contemporary, leading-edge ocean technologies. Coverage includes an overview on the fundamentals of ocean science, ocean signals and instrumentation, coastal structures, developments in ocean energy technologies and ocean vehicles and automation. It aims at practitioners in a range of offshore industries and naval establishments as well as academic researchers and graduate students in ocean, coastal, offshore and marine engineering and naval architecture. The Springer Handbook of Ocean Engineering is organized in five parts: Part A: Fundamentals, Part B: Autonomous Ocean Vehicles, Subsystems and Control, Part C: Coastal Design, Part D: Offshore Technologies, Part E: Energy Conversion

Modeling Morphodynamic Evolution In Alluvial Estuaries

Author : Mick van der Wegen
ISBN : 9780203093344
Genre : Technology & Engineering
File Size : 36. 88 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.

Natural Headland Sand Bypassing

Author : Mohd Shahrizal Bin Ab Razak
ISBN : 1138028649
Genre : Mathematics
File Size : 90. 15 MB
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This study contributes to the understanding of the mechanisms and processes of sand bypassing in artificial and non-artificial coastal environments through a numerical modelling study. Sand bypassing processes in general is a relevant but poorly understood topic. This study attempts to link the theory and physics of sand bypassing processes which is significantly important in definition of coastal sedimentary budget. The main question is how can we model sand bypassing processes and whether the modelled sand bypassing processes represent the actual sand bypassing processes. In this study, it is shown that a process-based model can be used to simulate the processes of sand bypassing around groyne and headland structures. Both hypothetical and real case studies were successfully developed. Results comparisons were made among analytical models, empirical models and field data measurements. In general, the process-based model can produce reasonable results. In summary, through numerical modelling this study reveals the importance of understanding coastal processes and the role of geological controls in governing headland sand bypassing processes and embayed beach morphodynamics. The morphological model developed in this study is useful to increase understanding of the natural sand distribution patterns due to combination of engineering efforts and natural coastal processes.

The History Of Global Climate Governance

Author : Joyeeta Gupta
ISBN : 9781107040519
Genre : Law
File Size : 87. 93 MB
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What has happened globally on the climate change issue? How have countries' positions differed over time, and why? How are problems and politics developing on an increasingly globalised planet, and can we find a solution? This book explores these questions and more, explaining the key underlying issues of the conflicts between international blocs. The negotiation history is systematically presented in five phases, demonstrating the evolution of decision-making. The book discusses the coalitions, actors and potential role of the judiciary, as well as human rights issues in addressing the climate change problem. It argues for a methodical solution through global law and constitutionalism, which could provide the quantum jump needed in addressing the problem of climate governance. This fascinating and accessible account will be a key resource for policymakers and NGOs, and also for researchers and graduate students in climate policy, geopolitics, climate change, environmental policy and law, and international relations.

Developments In Multidimensional Spatial Data Models

Author : Alias Abdul Rahman
ISBN : 9783642363795
Genre : Science
File Size : 35. 2 MB
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This book presents the latest research developments in geoinformation science, which includes all the sub-disciplines of the subject, such as: geomatic engineering, GIS, remote sensing, digital photogrammetry, digital cartography, etc.

Point Cloud Data Fusion For Enhancing 2d Urban Flood Modelling

Author : Vorawit Meesuk
ISBN : 1138306177
Genre : Computer graphics
File Size : 29. 6 MB
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Modelling urban flood dynamics requires proper handling of a number of complex urban features. Although high-resolution topographic data can nowadays be obtained from aerial LiDAR surveys, such top-view LiDAR data still have difficulties to represent some key components of urban features. Incorrectly representing features like underpasses through buildings or apparent blockage of flow by sky trains may lead to misrepresentation of actual flood propagation, which could easily result in inadequate flood-protection measures. Hence proper handling of urban features plays an important role in enhancing urban flood modelling. This research explores present-day capabilities of using computer-based environments to merge side-view Structure-from-Motion data acquisition with top-view LiDAR data to create a novel multi-source views (MSV) topographic representation for enhancing 2D model schematizations. A new MSV topographic data environment was explored for the city of Delft and compared with the conventional top-view LiDAR approach. Based on the experience gained, the effects of different topographic descriptions were explored for 2D urban flood models of (i) Kuala Lumpur, Malaysia for the 2003 flood event; and (ii) Ayutthaya, Thailand for the 2011 flood event. It was observed that adopting the new MSV data as the basis for describing the urban topography, the numerical simulations provide a more realistic representation of complex urban flood dynamics, thus enhancing conventional approaches and revealing specific features like flood watermarks identification and helping to develop improved flood-protection measures.

Modelling Floodplain Biogeomorphology

Author : M. Baptist
ISBN : STANFORD:36105114777316
Genre : Nature
File Size : 20. 34 MB
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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.

Creating Low Carbon Cities

Author : Shobhakar Dhakal
ISBN : 9783319497303
Genre : Science
File Size : 84. 14 MB
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This book addresses key topics in the current deliberations and debates on low carbon cities that are underway globally. Contributions by experts from around the world focus on the key factors required for creating low carbon cities. These include appropriate infrastructure, ensuring co-benefits of climate actions, making best use of knowledge and information, proper accounting of emissions, and social factors such as behavioral change. Readers will gain a better understanding of these drivers and explore potential transformation pathways for cities. Particular emphasis is given to the current situation of energy consumption and greenhouse gas (GHG) emissions at the urban level, stressing the complexity of measuring GHG emissions from cities. Chapters also shed new light on the long-term transformation pathways towards low carbon. This book discusses key challenges and opportunities in all these domains to aid in creating low carbon cities, making it of value to policy makers, researchers in academia and consultants working on climate change and energy issues. “The low carbon cities agenda is of bold ambition and demands rapid societal transformation. This book provides invaluable information and analysis on how the goals of this agenda can be achieved and what will be the significant obstacles in the way. The content in the book goes below the surface to reveal on-the-ground economic, engineering and equity issues that are at the heart of the Paris Climate Agreement and the ensuing policy debates. In this way, Creating Low Carbon Cities serves as a critical scholarly benchmark and as a toolkit for further action." William Solecki, Professor, Institute for Sustainable Cities, City University of New York "Creating Low Carbon Cities provides a refreshingly critical approach to low-carbon urban development, what has been achieved so far and the challenges ahead. It will be an important data-driven resource for local leaders, sustainability practitioners and urban planners.” Ms. Monika Zimmermann, Deputy Secretary General, ICLEI—Local Governments for Sustainability

Biodiversity

Author : Takuya Abe
ISBN : 9781461219064
Genre : Science
File Size : 79. 55 MB
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Despite acknowledgment that loss of living diversity is an international biological crisis, the ecological causes and consequences of extinction have not yet been widely addressed. In honor of Edward O. Wilson, winner of the 1993 International Prize for Biology, an international group of distinguished biologists bring ecological, evolutionary, and management perspectives to the issue of biodiversity. The roles of ecosystem processes, community structure and population dynamics are considered in this book. The goal, as Wilson writes in his introduction, is "to assemble concepts that unite the disciplines of systematics and ecology, and in so doing to create a sound scientific basis for the future management of biodiversity."

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