EP31C:
Cohesive Sediment Erosion and Transport in Riverine, Estuarine, and Coastal Environments I

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Session ID#: 17866

Session Description:
While channels with cohesive beds and/or banks are found throughout the world, predicting the occurrence and rate of fine grained, cohesive channel erosion remains problematic.  Unlike noncohesive sediments, cohesive soils are bound together via multiple mechanisms related to interlayer clay bonding, sesquioxide-cement bonds, and organic secretions by roots and soil microorganisms.  Thus the erosion of channels with cohesive boundaries is a particularly complex and dynamic process.   Predicting the occurance and rate of cohesive soil erosion has implications for channel migration, infrastructure protection, and water quality impairment due to sediment and associated contaminants.  This session will highlight research that advances our understanding of the processes and prediction of cohesive channel erosion, including field and laboratory measurement techniques, as well as modeling of streambank retreat and channel migration.
Primary Convener:  Allen H Reed, Naval Research Lab Stennis Space Center, Seafloor Sciences Branch, Stennis Space Center, MS, United States
Conveners:  Andrew James Manning, HR Wallingford Ltd, Coasts & Oceans Group, Wallingford, United Kingdom, Daniel R Parsons, University of Hull, Energy & Environment Institute, Hull, United Kingdom and Theresa Wynn-Thompson, Virginia Polytechnic Institute and State University, Biological Systems Engineering, Blacksburg, VA, United States
Chairs:  Andrew James Manning, HR Wallingford Ltd, Coasts & Oceans Group, Wallingford, United Kingdom and Allen H Reed, Naval Research Lab Stennis Space Center, Seafloor Sciences Branch, Stennis Space Center, MS, United States
OSPA Liaison:  Theresa Wynn-Thompson, Virginia Polytechnic Institute and State University, Biological Systems Engineering, Blacksburg, VA, United States
Index Terms:

1815 Erosion [HYDROLOGY]
1862 Sediment transport [HYDROLOGY]

Abstracts Submitted to this Session:

Cohesive Sedimentary Processes on River-Dominated Deltas: New Perspectives from the Mississippi River Delta Front, Gulf of Mexico (Invited) (128797)
Samuel J Bentley, Louisiana State Univeristy, Coastal Studies Institute, Baton Rouge, LA, United States, Gregory Paul Keller, Louisiana State University, Department of Geology and Geophysics, Baton Rouge, LA, United States, Jeffrey Obelcz, Coastal Studies Institute, Baton Rouge, LA, United States, Jillian M Maloney, San Diego State University, Geological Sciences, San Diego, CA, United States, Kehui Xu, Louisiana State University, Department of Oceanography and Coastal Sciences, Baton Rouge, LA, United States, Ioannis Y Georgiou, University of New Orleans, Department of Earth and Environmental Sciences, New Orleans, LA, United States and Michael D. Miner, The Water Institute of the Gulf, New Orleans, LA, United States
Implications of Tidally Varying Bed Stress and Intermittent Estuarine Stratification on Fine-Sediment Dynamics through the Mekong’s Tidal River to Estuarine Reach (161022)
Robin Lydia McLachlan, University of Washington, School of Oceanography, Seattle, WA, United States, Andrea S Ogston, University of Washington, School of Oceanography, Seattle, United States, Mead A Allison, Tulane University of Louisiana, New Orleans, LA, United States and Rose Hilmo, University of Washington Seattle Campus, Seattle, WA, United States
Impinging Jets and the Erodibility of Cohesive Sediment (Invited) (180879)
Sean Joseph Bennett, Seyed Mohammad Ghaneeizad, Maliheh Karamigolbaghi and Joseph F Atkinson, University at Buffalo, Buffalo, NY, United States
Field observations of cohesive sediment dynamics in a partially stratified estuary (Invited) (164258)
Ivy Bifu Huang, Stanford University, Dept. of Civil and Environmental Engineering, Stanford, CA, United States, Stephen G Monismith, Stanford University, Civil and Environmental Engineering, Stanford, CA, United States and Andrew J Manning, HR Wallingford Ltd, Coasts & Oceans Group, Wallingford, United Kingdom
Vertical Transport of Sediment from Muddy Buoyant River Plumes in the Presence of Different Modes of Interfacial Instabilities (187004)
Kyle Strom, Virginia Tech, Civil Engineering, Blacksburg, United States and Mohamad Rouhnia, Virginia Tech, Blacksburg, VA, United States
Application of Chromophoric Dissolved Organic Matter Absorbance and Excitation-Emission Matrix Fluorescence Spectra (EEMS) to Investigate Clay-Organic Matter Flocculation Processes in Riverine-Estuarine Systems (187564)
Joseph P Smith, US Naval Academy, Annapolis, United States, Allen H Reed, Naval Research Lab Stennis Space Center, Seafloor Sciences Branch, Stennis Space Center, MS, United States and Thomas Jordan Boyd, US Naval Research Laboratory, Washington, DC, United States

See more of: Earth and Planetary Surface Processes