Cohesive sediment, or mud, is encountered in most water bodies throughout the world. Often mud is a valuable resource, synonymous with fertile land, enriching the natural environment and used as an important building material. Yet mud also hinders navigation and consequently, dredging operations have been carried out since ancient times to safeguard navigation. Unfortunately, many mud deposits are now contaminated, endangering the eco-system and increasing the costs of dredging operations. The transport and fate of mud in the environment are still poorly understood and the need for basic research remains. This text contains the proceedings of the INTERCOH-2000 conference on progress in cohesive sediment research. It was the sixth in a series of conferences initially started by Professor Ashish Mehta in 1984 as a "Workshop on Cohesive Sediment Dynamics with Special Reference to the Processes in Estuaries". During these conferences the character of the first workshop has always been maintained, that is, small scale and dedicated to the physical and engineering aspects of cohesive sediments, without parallel sessions, but with ample time for discussions during and after the presentations, and followed by a book of proceedings containing thoroughly reviewed papers. INTERCOH-2000 was integrated with the final workshop of the COSINUS project. This project was carried out as a part of the European MAST-3 programme, and almost all European cohesive sediment workers were involved. INTERCOH-2000 focused on the behaviour and modelling of concentrated benthic suspensions, i.e. high-concentrated near-bed suspensions of cohesive sediment. Special attention was paid to: sediment - turbulence interaction; flocculation and settling velocity; high-concentrated mud suspensions; processes in the bed - consolidation; processes on the bed - erosion; field observations on mud dynamics; instrumentation; and numerical modelling.
1. Cover image 2. Title page 3. Table of Contents 4. Inside Front Cover 5. Front Matter 6. Copyright page 7. In memory of Ray B. Krone 8. Preface 9. Prediction of cohesive sediment transport and bed dynamics in estuaries and coastal zones with integrated numerical simulation models (COSINUS) 10. Interaction of suspended cohesive sediment and turbulence 11. Flocculation and settling velocity of fine sediment 12. Dynamics of Concentrated Benthic Suspension Layers 13. Measurement and modelling of the properties of cohesive sediment deposits 14. Numerical simulation of cohesive sediment transport : intercomparison of several numerical models 15. Tidal asymmetry and variability of bed shear stress and sediment bed flux at a site in San Francisco Bay, USA 16. Physical modelling of entrainment by a Concentrated Benthic Suspension 17. Interfacial instabilities at the lutocline in the Jiaojiang estuary, China 18. CBS layers in a diffusive turbulence grid oscillation experiment 19. Modelling of turbulent flow with suspended cohesive sediment 20. Scaling parameters for High-Concentrated Mud Suspensions in tidal flow 21. Direct observation of the formation and break-up of aggregates in an annular flume using laser reflectance particle sizing 22. The Turbidity Maximum in a Mesotidal Estuary, the Tamar Estuary, UK: I. Dynamics of Suspended Sediment 23. The Turbidity Maximum in a Mesotidal Estuary, the Tamar Estuary, UK: II. The Floc Properties 24. A Comparison Of Floc Properties Observed During Neap and Spring Tidal Conditions 25. Particle Size Distribution in an Estuarine Turbidity Maximum Region 26. On the geometry of cohesive settling flocs 27. Comparison of flocculation models for applied sediment transport modelling 28. In situ measurements of settling velocity and particle size distribution with the LISST-ST 29. On the erodibility of fine-grained sediments in an infilling freshwater system 30. Gas bubble nucleation and growth in cohesive sediments 31. Erosion properties of mud beds deposited in laboratory settling columns 32. Strength modelling of consolidating mud beds 33. Description of Vertical exchange processes in numerical mud transport modelling 34. Simulation of biogenic sediment stabilisation by heterotrophic bacteria in an annular flume 35. The influence of an extracellular polymeric substance (EPS) on cohesive sediment stability 36. The seasonal dynamics of benthic (micro) organisms and extracellular carbohydrates in an intertidal mudflat and their effect on the concentration of suspended sediment 37. Interaction of Submerged Vegetation, Hydrodynamics and Turbidity; Analysis of Field and Laboratory Studies 38. Sedimentation in a coastal mangrove system, Red River Delta, Vietnam 39. A Preliminary Study on Using Acoustic Waves to Measure High Resolution Marine Sediment Bed Structure 40. An Unusual Turbidity Maximum 41. Near bed sediment transport in the Itajaí-açu River estuary, southern Brazil 42. Field study and modelling on the characteristics of bed mud formation processes at the Rokkaku River 43. Numerical simulation of cohesive sediment transport in the Loire estuary with a three-dimensional model including new parameterisations 44. 3D application of the continuous modelling concept to mud slides in open seas 45. The influence of fresh water distribution on SPM transport in the Dutch coastal zone 46. A process-based sand-mud model 47. 3-D numerical modelling of mud and radionuclide transport in the Chernobyl Cooling Pond and Dnieper - Boog Estuary 48. Episodic transport of organic-rich sediments in a microtidal estuarine system 49. An Adaptive Finite Element Solution for Cohesive Sediment Transport 50. Numerical modelling of Mud Transport Processes in the Tamar Estuary 51. Dynamics of the turbidity maximum in the Changjiang Estuary, China 52. Numerical Assessment of Source and Sink Terms for Cohesive Sediments 53. Modeling the sediment concentration profiles at the Amazon Shelf 54. Contributing authors
Cohesive sediment, or mud, is encountered in most water bodies throughout the world. Often mud is a valuable resource, synonymous with fertile land, enriching the natural environment and used as an important building material. Yet mud also hinders navigation and consequently, dredging operations have been carried out since ancient times to safeguard navigation. Unfortunately, many mud deposits are now contaminated, endangering the eco-system and increasing the costs of dredging operations. The transport and fate of mud in the environment are still poorly understood and the need for basic research remains. This text contains the proceedings of the INTERCOH-2000 conference on progress in cohesive sediment research. It was the sixth in a series of conferences initially started by Professor Ashish Mehta in 1984 as a "Workshop on Cohesive Sediment Dynamics with Special Reference to the Processes in Estuaries". During these conferences the character of the first workshop has always been maintained, that is, small scale and dedicated to the physical and engineering aspects of cohesive sediments, without parallel sessions, but with ample time for discussions during and after the presentations, and followed by a book of proceedings containing thoroughly reviewed papers. INTERCOH-2000 was integrated with the final workshop of the COSINUS project. This project was carried out as a part of the European MAST-3 programme, and almost all European cohesive sediment workers were involved. INTERCOH-2000 focused on the behaviour and modelling of concentrated benthic suspensions, i.e. high-concentrated near-bed suspensions of cohesive sediment. Special attention was paid to: sediment - turbulence interaction; flocculation and settling velocity; high-concentrated mud suspensions; processes in the bed - consolidation; processes on the bed - erosion; field observations on mud dynamics; instrumentation; and numerical modelling.
1. Cover image 2. Title page 3. Table of Contents 4. Inside Front Cover 5. Front Matter 6. Copyright page 7. In memory of Ray B. Krone 8. Preface 9. Prediction of cohesive sediment transport and bed dynamics in estuaries and coastal zones with integrated numerical simulation models (COSINUS) 10. Interaction of suspended cohesive sediment and turbulence 11. Flocculation and settling velocity of fine sediment 12. Dynamics of Concentrated Benthic Suspension Layers 13. Measurement and modelling of the properties of cohesive sediment deposits 14. Numerical simulation of cohesive sediment transport : intercomparison of several numerical models 15. Tidal asymmetry and variability of bed shear stress and sediment bed flux at a site in San Francisco Bay, USA 16. Physical modelling of entrainment by a Concentrated Benthic Suspension 17. Interfacial instabilities at the lutocline in the Jiaojiang estuary, China 18. CBS layers in a diffusive turbulence grid oscillation experiment 19. Modelling of turbulent flow with suspended cohesive sediment 20. Scaling parameters for High-Concentrated Mud Suspensions in tidal flow 21. Direct observation of the formation and break-up of aggregates in an annular flume using laser reflectance particle sizing 22. The Turbidity Maximum in a Mesotidal Estuary, the Tamar Estuary, UK: I. Dynamics of Suspended Sediment 23. The Turbidity Maximum in a Mesotidal Estuary, the Tamar Estuary, UK: II. The Floc Properties 24. A Comparison Of Floc Properties Observed During Neap and Spring Tidal Conditions 25. Particle Size Distribution in an Estuarine Turbidity Maximum Region 26. On the geometry of cohesive settling flocs 27. Comparison of flocculation models for applied sediment transport modelling 28. In situ measurements of settling velocity and particle size distribution with the LISST-ST 29. On the erodibility of fine-grained sediments in an infilling freshwater system 30. Gas bubble nucleation and growth in cohesive sediments 31. Erosion properties of mud beds deposited in laboratory settling columns 32. Strength modelling of consolidating mud beds 33. Description of Vertical exchange processes in numerical mud transport modelling 34. Simulation of biogenic sediment stabilisation by heterotrophic bacteria in an annular flume 35. The influence of an extracellular polymeric substance (EPS) on cohesive sediment stability 36. The seasonal dynamics of benthic (micro) organisms and extracellular carbohydrates in an intertidal mudflat and their effect on the concentration of suspended sediment 37. Interaction of Submerged Vegetation, Hydrodynamics and Turbidity; Analysis of Field and Laboratory Studies 38. Sedimentation in a coastal mangrove system, Red River Delta, Vietnam 39. A Preliminary Study on Using Acoustic Waves to Measure High Resolution Marine Sediment Bed Structure 40. An Unusual Turbidity Maximum 41. Near bed sediment transport in the Itajaí-açu River estuary, southern Brazil 42. Field study and modelling on the characteristics of bed mud formation processes at the Rokkaku River 43. Numerical simulation of cohesive sediment transport in the Loire estuary with a three-dimensional model including new parameterisations 44. 3D application of the continuous modelling concept to mud slides in open seas 45. The influence of fresh water distribution on SPM transport in the Dutch coastal zone 46. A process-based sand-mud model 47. 3-D numerical modelling of mud and radionuclide transport in the Chernobyl Cooling Pond and Dnieper - Boog Estuary 48. Episodic transport of organic-rich sediments in a microtidal estuarine system 49. An Adaptive Finite Element Solution for Cohesive Sediment Transport 50. Numerical modelling of Mud Transport Processes in the Tamar Estuary 51. Dynamics of the turbidity maximum in the Changjiang Estuary, China 52. Numerical Assessment of Source and Sink Terms for Cohesive Sediments 53. Modeling the sediment concentration profiles at the Amazon Shelf 54. Contributing authors
