MG33A:
Physical and Biogeochemical Processes at the Sediment-Water Interface in Estuaries, Coastal Oceans, and Shelf Seas II


Session ID#: 11355

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, Sarah Reynolds, University of Portsmouth, School of Earth & Environmental Sciences, Portsmouth, United Kingdom, Nina Stark, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States and Tian-Jian Hsu, University of Delaware, Newark, DE, United States
Student Paper Review Liaison:  Nina Stark, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
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:

MG33A-01
Evidence of Seabed Fluidization during Solitary Waves (92967)
Diane L Foster, University of New Hampshire Main Campus, Durham, NH, United States
MG33A-02
In-Situ Erodibility of Siliciclastic and Calcareous Sediments (89028)
Kevin B Briggs, John C. Stennis Space Center, Stennis Space Center, MS, United States and Joe Calantoni, U.S. Naval Research Laboratory, Stennis Space Center, MS, United States
MG33A-03
224Ra: 228Th Disequilibrium in Sediments as a Tracer for Solute Transfer Across the Sediment-Water Interface in Coastal Louisiana (90360)
Wokil Bam1, Kanchan Maiti2 and Neha A Ghaisas1, (1)Louisiana State University, Department of Oceanography and Coastal Sciences, Baton Rouge, LA, United States, (2)Louisiana State University, Oceanography and Coastal Sciences, Baton Rouge, LA, United States
MG33A-04
Polychaete Tubes, Turbulence, and Erosion of Fine-Grained Sediment (89947)
Amanda Kincke-Tootle, John C. Stennis Space Center, US Naval Research Laboratory, Stennis Space Center, MS, United States, Donya P Frank, US Naval Research Laboratory, NRC Postdoc at US Naval Research Laboratory, Stennis Space Center, MS, United States, Kevin B Briggs, John C. Stennis Space Center, Stennis Space Center, MS, United States and Joe Calantoni, US Naval Research Laboratory, Washington, DC, United States
MG33A-05
Characterization of a Louisiana Bay Bottom (88067)
Angelina M Freeman, Louisiana Coastal Protection and Restoration Authority, Planning and Research, Baton Rouge, LA, United States and Harry H Roberts, Louisiana State University, Baton Rouge, LA, United States
MG33A-06
Physical, chemical and biological controls of nutrient fluxes from fine-grained, organic-rich sediments in the Indian River Lagoon, Florida (92968)
Austin L Fox, John H Trefry, Robert Paul Trocine, Stacey L Fox and Yuchao Yan, Florida Institute of Technology, Melbourne, FL, United States
MG33A-07
Spatial patterns of cyanobacterial mat growth on sand ripples (88498)
Giulio Mariotti1, Vanja Klepac-Ceraj2, J Taylor Perron3 and Tanja Bosak3, (1)Louisiana State University, Department of Oceanography & Coastal Sciences, Baton Rouge, LA, United States, (2)Wellesley College, Department of Biological Sciences, Wellesley, MA, United States, (3)Massachusetts Institute of Technology, Cambridge, MA, United States
MG33A-08
What Controls Bed Erodibility in Muddy, Partially-Mixed Estuaries? Insights from the York River, Virginia (88941)
Carl T Friedrichs1, Grace M Cartwright1, Patrick Dickhudt2, Kelsey Fall1 and Lindsey M Kraatz3, (1)Virginia Institute of Marine Science, Gloucester Point, VA, United States, (2)U.S. Army Engineer Research and Development Center, Duck, NC, United States, (3)National Oceanic and Atmospheric Administration, Washington, DC, United States
See more of: Marine Geology & Sedimentology