MG44A:
Internal Waves/Tides and Sediment Processes on Continental Margins I Posters


Session ID#: 27636

Session Description:
Enhanced bottom currents and turbulence generated by the interaction of internal waves/tides with the seafloor have been shown to influence sedimentation and generate nepheloid layers and sediment bedforms over continental slopes and within submarine canyons. Higher frequency internal waves in the form of nonlinear solitons, bores, and boluses can also resuspend and transport bottom sediment, particularly in shallow seas and on inner continental shelves. This session solicits abstracts focusing on how near-inertial, semi-diurnal and/or higher frequency internal waves drive sedimentation and sediment transport in the coastal and open ocean. We welcome presentations describing field measurements, numerical and conceptual models, and laboratory experiments on this interdisciplinary topic. Interesting subjects include, but are not limited to: (1) sedimentation effects of normally and obliquely incident critical and near-critical internal tides propagating over oceanic slopes; (2) sediment resuspension caused by internal-wave driven bed stresses, vertical “updrafts”, and vortices; (3) cross-shelf exchange driven by internal motions; and (4) morphologic and stratigraphic evidences and signatures of internal waves/tides in the seafloor and the geologic record.
Primary Chair:  David A Cacchione, Emeritus, U.S. Geological Survey, Coastal and Marine Geology, Menlo Park, CA, United States; Coastal and Marine Environments, Vancouver, WA, United States
Co-chairs:  Olivia M Cheriton, U.S. Geological Survey, Pacific Coastal and Marine Science Center Santa Cruz, Santa Cruz, CA, United States, Oliver B Fringer, Stanford University, Civil and Environmental Engineering and Oceans, Stanford, United States and Pere Puig, ICM-CSIC, Barcelona, Spain
Moderators:  Oliver B Fringer, Stanford University, Civil and Environmental Engineering and Oceans, Stanford, United States, Olivia M Cheriton, U.S. Geological Survey, Pacific Coastal and Marine Science Center Santa Cruz, Santa Cruz, CA, United States, Pere Puig, ICM-CSIC, Barcelona, Spain and David A Cacchione, Emeritus, U.S. Geological Survey, Coastal and Marine Geology, Menlo Park, CA, United States; Coastal and Marine Environments, Vancouver, WA, United States
Student Paper Review Liaisons:  Olivia M Cheriton, U.S. Geological Survey, Pacific Coastal and Marine Science Center Santa Cruz, Santa Cruz, CA, United States and David A Cacchione, Emeritus, U.S. Geological Survey, Coastal and Marine Geology, Menlo Park, CA, United States; Coastal and Marine Environments, Vancouver, WA, United States
Index Terms:

3002 Continental shelf and slope processes [MARINE GEOLOGY AND GEOPHYSICS]
3022 Marine sediments: processes and transport [MARINE GEOLOGY AND GEOPHYSICS]
3045 Seafloor morphology, geology, and geophysics [MARINE GEOLOGY AND GEOPHYSICS]
4544 Internal and inertial waves [OCEANOGRAPHY: PHYSICAL]
Cross-Topics:
  • CD - Coastal Dynamics
  • PS - Physical Oceanography: Mesoscale and Smaller
  • PO - Physical Oceanography: Other

Abstracts Submitted to this Session:

Energy Transfer and Dissipation Processes of Mode-2 Internal Solitary Waves Modulated by Background Shear Currents (315191)
Peiwen Zhang1, Zhenhua Xu1, Baoshu Yin2, Qun Li3, Yijun Hou4 and Antony A K Liu5, (1)Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China, (2)Institute of Oceanology, Chinese Academy of Sciences and Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China, (3)Polar Research Institute of China, Shanghai, China, (4)Institute of Oceanology, Chinese Academy of Sciences and Qingdao National Laboratory for Marine Science and Technology, Qingdao, China, (5)Ocean College, Zhejiang University, Hangzhou, China
Internal solitary waves propagating through variable background hydrology and currents (315745)
Zihua Liu, Roger Grimshaw and Edward R Johnson, University College London, London, United Kingdom
Transport and dispersion due to breaking internal gravity waves on slopes (326345)
Oliver B Fringer, Stanford University, Civil and Environmental Engineering and Oceans, Stanford, United States and Robert S Arthur, Lawrence Livermore National Laboratory, Livermore, United States
Transport and Fate of Suspended Particles from a Submarine Mine Tailing Discharge in a Norwegian Fjord (317350)
Raymond Nepstad, Emlyn Davies and Morten Alver, SINTEF Ocean, Trondheim, Norway
Efficient Mixing in an Internal-Wave Bottom Boundary Layer over a Sloping Lakebed: The Role of Shear-Induced Stratification (326035)
Jeffrey Reeve Nielson1, Stephen M Henderson2 and John Harrison1, (1)Washington State University Vancouver, School of the Environment, Vancouver, WA, United States, (2)Washington State University, Vancouver, United States
The Persistent Oxygen and Temperature Anomaly of an Inner Shelf Bottom Nepheloid Layer (305900)
Jason Jolliff1, Ewa Jarosz2, Travis Smith3, Allison Penko1 and Sherwin Ladner4, (1)US Naval Research Laboratory, Washington, DC, United States, (2)U.S. Naval Research Laboratory, Stennis Space Center, United States, (3)Naval Research Laboratory, Ocean Sciences, Stennis Space Center, MS, United States, (4)NRL Code 7331, Stennis Space Center, MS, United States

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