SUBJECT INDEX. ~ ~5 physico-chemical properties 254,255 Redox potential 254,255

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1 Aggregates: beds formed by deposition 81,82 breakup by fluid shear, introduction 85,86 deposition from flowing water 80 implications in cohesive sediment transport needs for further research 83 quasi-steady coagulation with breakup significance of properties to transport, introduction 66,67 size distribution dynamics in nonsteady emulsion steady state droplet sizes steady state size during breakup suspended aggregate properties Aggregation (see Aggregates) Biota and erosion influence (see also Bioturbation): algae mat communities 258 diatom species, effect 257 enhanced stability, laboratory studies 256 growth on glass beads 256,257 intertidal accretion and erosion, field studies 259 introduction 251,252 rotating channel study 257,258 Biota in sediment (see also Biota and erosion influence; Bioturbation): adhesive secretions 256 biota and organic matter bubble formation 255 living sediments, description ~ ~5 physico-chemical properties 254,255 Redox potential 254,255 Bioturbation: animal tubes 263 Barnstable Sound study 261 Buzzards Bay study 260 feces and pseudo-feces 262,263 flume and field studies 260,261 Long Island Sound study 260,261 tracks and trails 262 Bottom boundary layer modeling: current model 363,364 current-wave model deposition model effect of sediment 373 environmental turbulence 388 equations of motion 399,400 erosion and deposition models erosion model flocculation-effect on deposition 391 flocculation model introduction Mississippi Sound study 386 model review particle size distribution, evolution

2 470 resistance: canopy hydrodynamic sublayer sediment-eddy interaction wave model Characterization of soils using electrical properties: experimental procedure experimental results and discussion influence: pore fluid concentration Sodium Adsorption Ratio 215,216 soil type solid concentration 211,212 instrument accuracy 217 method of measurement 210,211 potential applications Cohesive sediment behavior, engineering purposes: cohesive boundary erosion and deposition 277,278 introduction and objectives models suspensions 275 Cohesive sediment characterization (see also Characterization of soils using electrical properties; Cohesive sediment parameterization): aggregation and settling velocities bed properties deposition dispersive transport 318 erosion 315,316 fluid properties introduction 290,291 model simulation 318,319 sediment and fluid sediment bed 316,317 sediment properties settling velocity measurement transport parameters Cohesive sediment parameterization: bed levels and velocity field concentration (mass and volumetric) ultrasound scans Cohesive sediment transport: continuum mechanics approach: discussion 452,453 introduction 429,430 fundamental framework for dynamics, introduction 219,220 introduction 1-3 nature of cohesive sediments state-of-the-art summary 467,468 Consolidation (see Cohesive sediment characterization; Sediment bed description; Sediment bed modeling; Suspensions - transition to bed)

3 471 Density measurement: bed referenced gauges 208 bottom sensors 208 fathometers 207 field probe design, tentative 217,218 introduction to an electrical method Deposition (see also Cohesive sediment characterization; Cohesive sediment transport; Settling behavior; Settling velocity; Suspensions - vertical transport): deposition behavior Engineering Research Application (see also Characterization of soils using electrical properties; Waterways Experiment Station) Erosion (see also Wave-induced erosion): effects: change in chemical environment 26,27 chemical composition conditions 7 dredging 21, 22 estuary, introduction 5,6 geological increased interaction time particle size and composition problems in study 7-10 sediment mixing erosion process open questions 36 response: annual seasonal effects 17,18 currents neap and spring tides 16,17 resuspension of deposited muds spatial distribution, example temporal and spatial characteristics wave influence 20,21 Flow-sediment interaction (see also Wave-mud interaction): stochastic model Mixture theory: applications background 430,431 balance equations 432,433 constitutive equations kinematics 431,432 Modeling (see Bottom boundary layer modeling; Non-local models; Sediment bed modeling; Wave-mud interaction) Muddy coasts: morphology 402,403 wave-bottom interaction 403 Newly-deposited sediments: observed concentrations 188,189 transport theory approach 189

4 472 Non-local models: applications background 443,444 constitutive equations 445,446 formulation 444,445 Resuspension (see erosion) Rheology (see also Aggregates; Cohesive sediment characterization; Suspensions): clay suspensions erosion 122,123 montmorillonite suspensions 121,122 Na-kaolinite suspensions Sediment bed description: bed structure consolidation theories 330,331 formulation and consolidation 328,329 shear strength 329 swelling and permeability 329,330 Sediment bed modeling: bed model consolidation algorithm erosion algorithm introduction schematization verification and application Settling behavior: discussion experimental results grain size dynamics introduction 151,152 previous work shaking experiments Settling velocity (see also Settling behavior): cohesion 129 comparison of values effect: concentration particle size 137,138 salinity settling height 143,144 temperature 144 tidal range/turbulence field measurement, introduction flocculation 128 general equation 144,145 interparticle collision 128 need for relevant equations 126,127 Owen tube settling process 127,128 Thames Estuary measurements

5 473 Suspensions: application of stratification diagram to field observations bed flux estimation and method limitation clay particle interactions energy dissipation mechanical response 111,112 rheology, introduction 110,111 stratification diagram 178,179 Suspensions - dense: settling velocities 185 transport equations 186,187 transport theory and laboratory experiments 187 Suspensions - transition to bed: discussion of experimental results effective stress 197,198 experimental details experimental results introduction 192,193 soil/water system, characterization 193,194 traditional soil model 194,195 Suspensions - vertical transport: analysis and problems, methods analytic models 173,174 concentration, vertical variations 172 governing equations 172,173 introduction 170,171 numerical models and results (for turbulent suspensions) Waterways Experiment Station: applied research Atchafalaya Bay study fine-grained shoaling 456,457 future directions integrated hydrographic survey systems 457 Kill van Kull study Kings Bay study 458,459 numerical modeling 457,458 site-specific studies Terrebonne Marshes study 463 Wave attenuation: observations from Surinam 47-52,64,65 previous studies Wave-induced erosion: previous studies observations from Louisiana and Surinam 54-57,64,65