Multiple Scales Of Suspended Sediment Dynamics In A Complex Geometry Estuary

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Multiple Scales Of Suspended Sediment Dynamics In A Complex Geometry Estuary

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Author : Fernanda Achete
language : en
Publisher: CRC Press
Release Date : 2020-04-22

Multiple Scales Of Suspended Sediment Dynamics In A Complex Geometry Estuary written by Fernanda Achete and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-04-22 with Science categories.

Many estuaries are located in urbanized, highly engineered environments. Cohesive sediment plays an important role due to its link with estuarine health and ecology. An important ecological parameter is the suspended sediment concentration (SSC) translated into turbidity levels and sediment budget. This study contributes to investigate and forecast turbidity levels and sediment budget variability at San Francisco Bay-Delta system at a variety of spatial and temporal scales applying a flexible mesh process-based model (Delft3D FM). It is possible to have a robust sediment model, which reproduces 90% of the yearly data derived sediment budget, with simple model settings, like applying one mud fraction and a simple bottom sediment distribution. This finding opens the horizon for modeling less monitored estuaries. Comparing two case studies, i.e. the Sacramento-San Joaquin Delta and Alviso Slough, a classification for estuaries regarding the main sediment dynamic forcing is proposed: event-driven estuary (Delta) and tide-driven estuary (Alviso Slough). In the event-driven estuaries, the rivers are the main sediment source and the tides have minor impact in the net sediment transport. In the tide-driven estuaries, the main sediment source is the bottom sediment and the tide asymmetry defines the net sediment transport. This research also makes advances in connecting different scientific fields and developing a managerial tool to support decision making. It provides the basis to a chain of models, which goes from the hydrodynamics, to suspended sediment, to phytoplankton, to fish, clams and marshes.

Multiple Scales Of Suspended Sediment Dynamics In A Complex Geometry Estuary

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Author : Fernanda Minikowski Achete
language : en
Publisher: CRC Press
Release Date : 2020-04-22

Multiple Scales Of Suspended Sediment Dynamics In A Complex Geometry Estuary written by Fernanda Minikowski Achete and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-04-22 with Science categories.

Many estuaries are located in urbanized, highly engineered environments. Cohesive sediment plays an important role due to its link with estuarine health and ecology. An important ecological parameter is the suspended sediment concentration (SSC) translated into turbidity levels and sediment budget. This study contributes to investigate and forecast turbidity levels and sediment budget variability at San Francisco Bay-Delta system at a variety of spatial and temporal scales applying a flexible mesh process-based model (Delft3D FM). It is possible to have a robust sediment model, which reproduces 90% of the yearly data derived sediment budget, with simple model settings, like applying one mud fraction and a simple bottom sediment distribution. This finding opens the horizon for modeling less monitored estuaries. Comparing two case studies, i.e. the Sacramento-San Joaquin Delta and Alviso Slough, a classification for estuaries regarding the main sediment dynamic forcing is proposed: event-driven estuary (Delta) and tide-driven estuary (Alviso Slough). In the event-driven estuaries, the rivers are the main sediment source and the tides have minor impact in the net sediment transport. In the tide-driven estuaries, the main sediment source is the bottom sediment and the tide asymmetry defines the net sediment transport. This research also makes advances in connecting different scientific fields and developing a managerial tool to support decision making. It provides the basis to a chain of models, which goes from the hydrodynamics, to suspended sediment, to phytoplankton, to fish, clams and marshes.

River Coastal And Estuarine Morphodynamics

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Author : Gary Parker
language : en
Publisher: CRC Press
Release Date : 2005-09-29

River Coastal And Estuarine Morphodynamics written by Gary Parker and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005-09-29 with Technology & Engineering categories.

The proceedings of the 4th Symposium on River, Coastal and Estuarine Morphodynamics offers the latest research results concerning quantitative modelling of the interaction of water and sediment and the shapes this interaction makes in rivers, watersheds, estuaries, the coast, the continental shelf and the deep sea. Morphodynamics is the study of the evolution of landscape and seascape features, from small scale to large.

River Coastal And Estuarine Morphodynamics Rcem 2009 Two Volume Set

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Author : Carlos Vionnet
language : en
Publisher: CRC Press
Release Date : 2018-10-03

River Coastal And Estuarine Morphodynamics Rcem 2009 Two Volume Set written by Carlos Vionnet and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-10-03 with Science categories.

Coastal, estuarine, fluvial and submarine morphodynamics encompass some of the leading processes shaping our planet. They stem mainly, but not only, from the interaction of water in motion and movable sediment boundaries, resulting in morphological changes produced by erosion, transport and deposition of sediments that generate a variety of landsca

Tunnelling A Decade Of Progress Geodelft 1995 2005

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Author : Adam Bezuijen
language : en
Publisher: CRC Press
Release Date : 2005-12-22

Tunnelling A Decade Of Progress Geodelft 1995 2005 written by Adam Bezuijen and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005-12-22 with Technology & Engineering categories.

Following years of research, the first bored tunnel in soft soil in the Netherlands, the Tweede Heinenoord tunnel, was completed in 1998. Since then, Dutch engineers have increased their knowledge of soft soil tunnelling, with a significant and important part of this research being carried out by GeoDelft, the Dutch National Institute of Geo-Engineering. This book contains the most important publications by GeoDelft on the subject of soft soil tunnelling, focusing on the period from 1992 to the present, it is divided into four main headings: field measurements; grout behaviour; model testing; and numerical analysis. This impressive overview of the progress made in the Netherlands in soft soil tunnelling research over more than a decade is a valuable resource to those working in soft soil tunnelling worldwide.

Estuaries A Lifeline Of Ecosystem Services In The Western Indian Ocean

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Author : Salif Diop
language : en
Publisher: Springer
Release Date : 2016-03-22

Estuaries A Lifeline Of Ecosystem Services In The Western Indian Ocean written by Salif Diop and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-03-22 with Science categories.

This book provides recent environmental, ecological and hydrodynamic information for the major estuaries and the coastal marine systems of the Western Indian Ocean Region. It covers various functions and values of the region’s estuarine ecosystems and their respective habitats, including the land/ocean interactions that define and impact ecosystem services. The Western Indian Ocean region covered by this volume consists of the continental coastal states of Kenya, Mozambique, South Africa and Tanzania and the island states of Madagascar, Mauritius, Seychelles and Comoros.

Development Of A Decadal Scale Estuarine Geomorphic Model For Suisun Bay California

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Author : Neik K. Ganju
language : en
Publisher:
Release Date : 2006

Development Of A Decadal Scale Estuarine Geomorphic Model For Suisun Bay California written by Neik K. Ganju and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Sediment transport categories.

Sedimentation Control To Reduce Maintenance Dredging Of Navigational Facilities In Estuaries

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Author : National Research Council
language : en
Publisher: National Academies Press
Release Date : 1987-02-01

Sedimentation Control To Reduce Maintenance Dredging Of Navigational Facilities In Estuaries written by National Research Council and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987-02-01 with Science categories.

Selected Papers From The 13th Estuarine And Coastal Modeling Conference

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Author : Henry J. Bokuniewicz
language : en
Publisher: MDPI
Release Date : 2018-10-02

Selected Papers From The 13th Estuarine And Coastal Modeling Conference written by Henry J. Bokuniewicz and has been published by MDPI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-10-02 with Electronic books categories.

This book is a printed edition of the Special Issue "Selected Papers from the 13th Estuarine and Coastal Modeling Conference" that was published in JMSE

Modeling Of Hydrodynamics And Sediment Transport In The Mekong Delta

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Author : Vo Quoc Thanh
language : en
Publisher: CRC Press
Release Date : 2021-06-01

Modeling Of Hydrodynamics And Sediment Transport In The Mekong Delta written by Vo Quoc Thanh and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-06-01 with Science categories.

This research aims to investigate the prevailing sediment dynamics and the sediment budget in the Mekong Delta by using a process-based model. Understanding sediment dynamics for the Mekong Delta requires high resolution analysis and detailed data, which is a challenge for managers and scientists. This study introduces such an approach and focuses on modeling the entire system with a process-based approach with Delft3D-4 and Delft3D Flexible Mesh (DFM). The first model is used to explore sediment dynamics at the coastal zone. The latter model allows straightforward coupling of 1D and 2D grids, making it suitable for analyzing the complex river and canal network of the Mekong Delta. The validated model suggests that the Mekong Delta receives ~99 Mt/year sediment from the Mekong River. This is much lower than the common estimate of 160 Mt/year. Only about 23% of the modelled total sediment load at Kratie is exported to the sea. The remaining portion is trapped in the rivers and floodplains of the Mekong Delta. The results advance understanding of sediment dynamics and sediment budget in the Mekong Delta. As such the model is an efficient tool to support delta management and planning.