MG52A:
Sediment Delivery, Transport, and Deposition in Shallow-Water Environments III


Session ID#: 37322

Session Description:
Coastal aquatic environments are particularly susceptible to environmental degradation in part because they are shallow and often experience high loadings from rivers and shorelines. Expanding populations stress these regions, and in many cases have contributed to increases in the frequency and severity of unwanted effects, including: coastal erosion, hypoxia, harmful algal blooms, excess turbidity, and high rates of sedimentation. These problems are often tied to sediment transport, such that many nutrients and anthropogenic pollutants are transported with sediments, and sediment-induced turbidity can limit the amount of light available for photosynthesis and visual predators. Sediment transport in coastal waters can create deposits that in some cases are modified or destroyed by subsequent events, while in others may be preserved in the geologic record. Recent advances in theoretical, observational, and numerical modeling techniques have led to increased understanding of the processes and products of sediment delivery, transport and deposition in shallow-water environments: including lakes, estuaries, coasts and continental shelves. This session showcases research relevant to these environments covering physical forcing, particle behavior, modes of transport, biogeochemical feedbacks with sediment, sedimentary response, and event stratigraphy. Studies in this session may derive from field observations, laboratory experiments, and modeling across a range of timescales.
Primary Chair:  Courtney Kay Harris, Virginia Institute of Marine Science, Department of Physical Sciences, Gloucester Point, VA, United States
Co-chairs:  Guan-hong Lee, Inha University, Department of Oceanography, Incheon, South Korea and John P Walsh, East Carolina University, Institute for Coastal Science and Policy, Greenville, NC, United States
Moderators:  Courtney Kay Harris, Virginia Institute of Marine Science, Department of Physical Sciences, Gloucester Point, VA, United States and John P Walsh, East Carolina University, Institute for Coastal Science and Policy, Greenville, NC, United States
Student Paper Review Liaison:  Courtney Kay Harris, Virginia Institute of Marine Science, Department of Physical Sciences, Gloucester Point, VA, United States
Index Terms:

3022 Marine sediments: processes and transport [MARINE GEOLOGY AND GEOPHYSICS]
3045 Seafloor morphology, geology, and geophysics [MARINE GEOLOGY AND GEOPHYSICS]
4211 Benthic boundary layers [OCEANOGRAPHY: GENERAL]
Cross-Topics:
  • CD - Coastal Dynamics
  • E - Estuarine Processes

Abstracts Submitted to this Session:

Lagrangian observations and physical controls on flocculation along a tidally influenced river. (306259)
Julia C Mullarney, University of Waikato, Coastal Marine Group, Faculty of Science and Engineering, Hamilton, New Zealand, Iain Thomas MacDonald, NIWA, New Zealand and Berengere S. Dejeans, University of Waikato, Coastal Marine Group, Hamilton, New Zealand
Flocculation dynamics under various hydrodynamic conditions in the Sacramento-San Joaquin River Delta (307505)
Ivy Bifu Huang, Stanford University, Dept. of Civil and Environmental Engineering, Stanford, CA, United States, Andrew James Manning, HR Wallingford Ltd, Coasts & Oceans Group, Wallingford, United Kingdom and Stephen G Monismith, Stanford University, Stanford, CA, United States
Fractal particle properties in the surface waters of a partially-mixed estuary estimated via simultaneous measurements of excess density and apparent density (318965)
Kelsey Fall1,2, Carl T Friedrichs1, Grace Massey1, David George Bowers3 and Jarrell Smith2, (1)Virginia Institute of Marine Science, Gloucester Point, VA, United States, (2)USACE-ERDC Coastal and Hydraulics Laboratory, Vicksburg, MS, United States, (3)Univ Bangor, North Wales, United Kingdom
A Turbulence-Resolving Numerical Investigation of Flocculated Sediment Transport in Bottom Boundary Layer (315151)
Liangyi Yue, University of Delaware, Newark, DE, United States, Zhen Cheng, WHOI, Woods Hole, MA, United States, Tian-Jian Hsu, Center for Applied Coastal Research, University of Delaware, Newark, DE and Andrew J Manning, HR Wallingford Ltd, Coasts & Oceans Group, Wallingford, United Kingdom
Subtidal Controls on Estuarine Sediment Fluxes: Case Study in the Dee Estuary, UK (305696)
Laurent Amoudry, National Oceanography Centre, Marine Physics and Ocean Climate, Liverpool, United Kingdom, David Todd, HR Wallingford Ltd, Coasts & Oceans Group, Wallingford, United Kingdom, Megan E Williams, National Oceanography Centre, Liverpool, United Kingdom, Rafael Ramirez-Mendoza, Centro de Investigación Científica y de Educación Superior de Ensenada, Ensenada, Mexico, Rodolfo Bolanos Sanchez, DHI, Horsholm, Denmark and Alejandro Jose Souza, CINVESTAV-IPN, Marine Resources, Merida, Mexico
Contrasting Sediment Dynamics in Two Degrading Salt-Marsh Complexes: Grand Bay, AL/MS and Jamaica Bay, NY (320633)
Daniel J. Nowacki and Neil K Ganju, U.S. Geological Survey, Woods Hole, MA, United States
Unexpected Fluid and Sediment Transport Dynamics in Shallow-Water Wave and Current Driven Environments (315659)
Kurt Nelson, Stanford University, Civil and Environmental Engineering, Stanford, CA, United States and Oliver B Fringer, Stanford Univ-Civil/Envir Engg, Stanford, CA, United States

See more of: Marine Geology and Sedimentology