MG34A:
Physical and Biogeochemical Processes at the Sediment-Water Interface in Estuaries, Coastal Oceans, and Shelf Seas III Posters
MG34A:
Physical and Biogeochemical Processes at the Sediment-Water Interface in Estuaries, Coastal Oceans, and Shelf Seas III Posters
Physical and Biogeochemical Processes at the Sediment-Water Interface in Estuaries, Coastal Oceans, and Shelf Seas III Posters
Session ID#: 7911
Session Description:
Benthic processes and the resulting fluxes at the sediment-water interface are highly significant in the shallow waters that characterize estuaries, coastal oceans and shelf seas. Many physical and biogeochemical processes influence benthic-pelagic exchange, and near-bed fluxes and transport of sediments, nutrients, carbon and other bioactive solutes. Sediment resuspension and bed reworking by tides, waves, and biological activity are frequent in the energetic coastal environments considered. Dissolved material can be exchanged by diffusive and pumped/advective processes. The interactions between the flows and large and small scale seafloor morphology are complex and can modify flux rates. Particulate matter settles and accumulates in an unconsolidated fluff layer easily remobilised by bottom currents. Our understanding of these processes nevertheless remains limited to date, and fully elucidating the benthic-pelagic exchanges requires approaches encompassing biology, chemistry, physics, and the interactions and feedbacks between them. This session seeks contributions across these disciplines which directly address processes affecting cycling and fluxes at the sediment-water interface and in the near-bed boundary layer in estuaries, coastal oceans and shelf seas. This session will welcome studies based on in-situ observations, laboratory experiments, and modelling either resolving or parameterizing processes.
Primary Chair: Laurent Amoudry, National Oceanography Centre, Liverpool, United Kingdom
Chairs: Gary R Fones, University of Portsmouth, School of the Environment, Geography and Geosciences, Portsmouth, United Kingdom, Tian-Jian Hsu, University of Delaware, Newark, DE, United States, Peter Traykovski, Woods Hole Oceanograph Inst, Falmouth, MA, United States, Nina Stark, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States, Malay Ghose Hajra, University of New Orleans, Civil and Environmental Engineering, New Orleans, LA, United States, Christian Maerz, Newcastle University, Tyne and Wear, United Kingdom and Natascha Riedinger, Oklahoma State University Main Campus, Boone Pickens School of Geology, Stillwater, OK, United States
Moderators: Laurent Amoudry, National Oceanography Centre, Liverpool, United Kingdom, Nina Stark, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States and Natascha Riedinger, Oklahoma State University Main Campus, Boone Pickens School of Geology, Stillwater, OK, United States
Student Paper Review Liaison: Laurent Amoudry, National Oceanography Centre, Liverpool, United Kingdom
Index Terms:
4211 Benthic boundary layers [OCEANOGRAPHY: GENERAL]
4273 Physical and biogeochemical interactions [OCEANOGRAPHY: GENERAL]
4558 Sediment transport [OCEANOGRAPHY: PHYSICAL]
4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Co-Sponsor(s):
- B - Biogeochemistry and Nutrients
- ME - Marine Ecosystems
- TP - Turbulent Processes
Abstracts Submitted to this Session:
A numerical investigation of fine sediment resuspension in the wave boundary layer – effect of hindered settling and bedforms (89996)
Bedform Dimensions and Suspended Sediment Observations in a Mixed Sand-Mud Intertidal Environment (91082)
Phase lag control of tidally reversing mega-ripple geometry and bed stress in tidal inlets (92189)
In-Situ Observations of Cross-Shore Sediment Transport in Response to Waves Along the Inner-Continental Shelf Offshore from Fire Island, NY (87201)
Lagrangian Measurements, Simulation, and Theory for Incipient Motion in Oscillatory Flows (91342)
In-situ Geotechnical Characterization of Wetland Channel Cross Sections in Coastal Louisiana Using a Portable Free-fall Penetrometer (88946)
STURM: Resuspension mesocosms with realistic bottom shear stress and water column turbulence for benthic-pelagic coupling studies: Design and Applications (92348)
Response of Muddy Sediments and Benthic Diatom-based Biofilms to Repeated Erosion Events (91483)
Investigating the importance of micro-scale physical processes on macro-nutrient release from suspended estuarine sediments (92461)
Biogeochemical cycling of permeable sediments in a shelf sea environment: Celtic Sea, a seasonal study. (92460)
Dynamics of Methane Bubbles in the Sediment in the Presence of Intense Internal Waves in a Stratified Ocean. (89827)
Processes Determining the Spatial Distribution of Optically-Imaged Particles in the Gulf of Alaska (90358)
Photolytic Release of Dissolved Vanadium and Copper from Resuspended Coastal Marine Sediments (92166)
Photorelease and Phototransformations of Sedimentary Bound Brevetoxin (PbTx-2) Upon Resuspension (92190)
Estimating Production and Consumption of Solid Reactive Fe Phases in Marine Sediments from Concentration Profiles (91274)
Carbonate and Silica Cementation of the Siliciclastic Sediments of the New Jersey Shelf (IODP Expedition 313) : Relation with Organic Matter Diagenesis and Submarine Groundwater Discharge (88184)
Formation of ferromanganese crust in Western Pacific Magellan Seamount: Variations in redox state of Fe/Mn (89316)
See more of: Marine Geology & Sedimentology