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 : 21. 59 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.

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

Author : Pushpa Kumara Dissanayake
ISBN : 9780415621007
Genre : Technology & Engineering
File Size : 66. 81 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.

The Proceedings Of The Coastal Sediments 2011

Author : Julie D Rosati
ISBN : 9789814458528
Genre : Technology & Engineering
File Size : 52. 43 MB
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This proceedings contains nearly 200 papers on cutting-edge research presented at the seventh international Symposium on Coastal Engineering and Science of Coastal Sediment Processes, held May 2–6, 2011, in Miami, Florida, 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 a theme of bringing together theory and practice. Focusing on the physical aspects of sediment processes in various coastal environments, this three-volume conference proceedings provides findings from the latest research and newest engineering applications. Session topics cover a wide range including barrier-island morphodynamics and evolution, beach nourishment and shore protection, coastal dunes, cohesive sediment transport, field and laboratory measurements of sediment transport processes and numerical modeling, gravel transport, large-scale and long-term coastal changes, LiDAR and remote sensing, longshore and cross-shore sediment transport, marsh and wetlands, regional sediment management, river deltas, sea-level changes, shelf and sand bodies, shoreline changes, tidal inlets and navigation channels. A special session on recent research findings at the Northern Gulf of Mexico is also included. Foreword Foreword (51k) Sample Chapter(s) Chapter 1: Coastal Engineering – Theory and Practice (122k) Contents: Prediction of Topography of Stable Beach Produced by Gravel Nourishment at Jinkoji Coast and Further Nourishment Using Medium Sand (Y Noshi et al.)Beach Nourishment with a High Percentage of Fine Sediments: A Modeling Study of the Tijuana Fate and Transport Project, California (J Lescinski et al.)Repetitive Breaching on Cedar Island, Virginia, USA: History, Geomorphology, and Deposits (J T Hanley & R A McBride)Large-Scale, Complex-Shaped Coastline Responses to Different Forms of Local Shoreline Stabilization and Climate Change (K Ells et al.)Barrier Island Responses to Potential Future Rates of Sea-Level Rise (A W Niedoroda et al.)A Field Test of the Theoretical Evolution of a Mixed-Energy Barrier Coast to a Regime of Accelerated Sea-Level Rise (M S Fenster et al.)The Mystery of Historical Channel Shoaling at Houston-Galveston Navigation Channel, TX (J D Rosati et al.)A Port Site-Selection Study Governed by Sediment Transport Characteristics in the Persian Gulf (B Banijamali & S Sorourian)Nearshore Disposal of Fine-Grained Sediment in a High-Energy Environment: Santa Cruz Harbor Case Study (K Cronin et al.)Monitoring a Dredged Material Disposal Site on the Continental Shelf Using the Dynamic Penetrometer Nimrod (B Flaim et al.)Characterizing the Impact of Significant Dune Erosion along the Sefton Coast, NW England (L S Esteves & J J Williams)Interannual to Decadal Foredune Evolution (P Ruggiero et al.)Role of Suction Dynamics Effects in Intertidal Sandbar Morphodynamics (S Sassa & Y Watabe)Sand Bar Response to Different Wave Energy and Beach Environments in Two Florida Counties (L Absalonsen & R G Dean)Mechanism of Recent and Rapid Beach Erosion on the Yokosuka Coast, Japan (N X Tinh et al.)Quantification of Shoreline Morphology and Isolation of a Longshore Sediment Wave on a Sand Limited Shoreline in Cameron Parish, LA (M Campbell et al.)Modern-Ancient Analogues of Sand Bodies: A Tool for Sand Source Exploration (G A Zarillo)An Analysis of Morphological Parameters for Shoals of the Mid-Atlantic Bight, USA (R Narin et al.)Barrier Island Habitat Creation at Decadal Scales (T W Kana et al.)Model for Predicting Formation of Bar Barrier in Flat Shallow Sea (T Uda & M Serizawa)Process-Based Model Predictions of Hurricane Induced Morphodynamic Change on Low-Lying Barrier Islands (N G Plant et al.)Profile Change and Post-Storm Recovery of Delaware Beaches Resulting from Three Consecutive Storms in 2009 (T M Roberts & P Wang)Measurements and Analysis of Near Bed Sediment Processes by Waves in Rippled Bed and Plane Bed Regime (A Ahmari & H Oumeraci)Physical Modelling of Morphological Chang and Energy Dissipation on Gravel Beaches (A Atladóttir et al.)A Numerical Investigation on Hyperpycnal Flow (J-L Chen et al.)and other papers Readership: Graduate students and research in coastal engineering.Keywords:Key Features: Most up-to-date information and knowledge Broad worldwide attendance In depth technical focus

Die Grenzen Der Wissenschaft

Author : Nicholas Rescher
ISBN : 3150080959
Genre : Science
File Size : 70. 81 MB
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Ea Pf Hle

Author : Geotechnik
ISBN : 9783433601556
Genre : Technology & Engineering
File Size : 25. 14 MB
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This handbook provides a complete overview of pile systems and their application and production. It shows their analysis based on the new safety concept providing numerous examples for single piles, pile grids and groups. These recommendations are considered rules of engineering.

Physische Geographie Deutschlands

Author : Herbert Liedtke
ISBN : 3623008605
Genre : Physical geography
File Size : 31. 44 MB
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Beton Kalender 2011

Author : Konrad Bergmeister
ISBN : 9783433605684
Genre : Technology & Engineering
File Size : 43. 88 MB
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Structures for power generation are being designed and built at local, regional and international scales - the title provides the necessary knowledge for planning and design. Also: fibre-reinforced concretes incl. the March 10 DAfStb guideline on steel fibre reinforced concrete.

Einleitung In Die Geologie Als Historische Wissenschaft

Author : Johannes Walther
ISBN : UOM:39015068238057
Genre :
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Mathematik Im Mittelalterlichen Islam

Author : J. L. Berggren
ISBN : 354076688X
Genre : Mathematics
File Size : 25. 46 MB
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Die Mathematik im mittelalterlichen Islam hatte großen Einfluss auf die allgemeine Entwicklung des Faches. Der Autor beschreibt diese Periode der Geschichte der Mathematik und bezieht sich dabei auf die arabischsprachigen Quellen. Zu den behandelten Themen gehören Dezimalrechnen, Geometrie, ebene und sphärische Trigonometrie, Algebra sowie die Approximation von Wurzeln von Gleichungen. Das Buch wendet sich an Mathematikhistoriker und -studenten, aber auch an alle Interessierten mit Mathematikkenntnissen der weiterführenden Schule.

Explorative Experimente

Author : Friedrich Steinle
ISBN : 3515081852
Genre : History
File Size : 37. 32 MB
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Vor dem Hintergrund der neueren Experimentforschungen der Wissenschaftsgeschichte wird die Selbstdarstellung der Naturwissenschaft im 19. Jahrhundert hinterfragt und dazu die Arbeits- und Aufzeichnungspraxis von Physikern in Labornotizen und Briefen, Zeichnungen und Rechnungen rekonstruiert. In der Fruehphase der Elektrodynamik (1820-1822) wurden die begrifflichen Grundlagen fuer die Fernwirkungstheorie und die Feldtheorie geschaffen, deren Dichotomie eines der zentralen Themen der Physik des 19. Jahrhunderts darstellte. Im Zentrum stehen die Protagonisten Amp�re und Faraday, die in unterschiedlichen Arbeitskontexten, aber mit Blick auf dasselbe Forschungsgebiet, verschiedene Wege experimenteller Forschung einschlugen und dabei divergierende Ordnungssysteme entwickelten. Bei beiden findet sich eine explorative, der historischen und philosophischen Analyse bislang entgangene experimentelle Arbeitsweise. Die Arbeit gibt erstmals ein Gesamtbild einer zentralen Phase der Physikgeschichte und schl�gt ein neues Verst�ndnis des Experiments als Mittel empirischer Forschung vor.

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