PO24E:
The Ocean's Energy Cascade: Measuring and Modeling of Instabilities, Internal Waves, and Turbulence at the Submesoscale and Smaller III Posters


Session ID#: 11434

Session Description:
Large scale O(10^5 m) oceanic motions are linked to the turbulent scales O(<1 m) through a variety of mechanisms including internal wave radiation, interaction, and scattering, frontal instabilities, and boundary layer physics. Such mechanisms are essential for the vertical redistribution of energy generated along the ocean’s upper and bottom boundaries and thus are of critical importance in providing mechanical energy to processes in the stratified interior of the ocean. Regions of enhanced mixing are often found where a combination of currents, stratification, and topography act together to increase the potential for nonlinear interactions in the flow, for example through frontal instabilities and strong internal wave generation. Enhanced turbulence leads to mixing of water mass properties and changes to flow dynamics that can feedback on the larger-scale physics.  This session welcomes contributions from observational, theoretical, and numerical studies of the ocean's energy cascade at small scales (i.e. submesoscale and smaller).
Primary Chair:  Subhas Karan Venayagamoorthy, Colorado State University, Department of Civil and Environmental Engineering, Fort Collins, CO, United States
Chairs:  Louis St Laurent, Woods Hole Oceanographic Insti, Woods Hole, MA, United States, Emily Shroyer, Oregon State Univ, Corvallis, OR, United States and Harper L Simmons, University of Alaska Fairbanks, Fairbanks, AK, United States
Moderators:  Harper L Simmons, University of Alaska Fairbanks, Fairbanks, AK, United States and Emily Shroyer, Oregon State Univ, Corvallis, OR, United States
Student Paper Review Liaison:  Subhas Karan Venayagamoorthy, Colorado State University, Department of Civil and Environmental Engineering, Fort Collins, CO, United States
Index Terms:

4524 Fine structure and microstructure [OCEANOGRAPHY: PHYSICAL]
4544 Internal and inertial waves [OCEANOGRAPHY: PHYSICAL]
4562 Topographic/bathymetric interactions [OCEANOGRAPHY: PHYSICAL]
4568 Turbulence, diffusion, and mixing processes [OCEANOGRAPHY: PHYSICAL]
Co-Sponsor(s):
  • A - Air-sea Interactions and Upper Ocean Processes
  • EC - Estuarine and Coastal
  • OD - Ocean Observing and Data Management
  • TP - Turbulent Processes

Abstracts Submitted to this Session:

 
PO24E-2993
A Discussion on Diapycnal Mixing Efficiency in Stably Stratified Geophysical Flows (91903)
Subhas Karan Venayagamoorthy1, Amrapalli Garanaik1, Louis St Laurent2 and Derek D Stretch3, (1)Colorado State University, Department of Civil and Environmental Engineering, Fort Collins, CO, United States, (2)Woods Hole Oceanographic Institution, Physical Oceanography, Woods Hole, MA, United States, (3)University of KwaZulu-Natal, Civil Engineering, Durban, South Africa
 
PO24E-2995
A spectral multidomain penalty method model for the simulation of internal solitary wave shoaling and breaking over gentle slopes (89045)
Peter Diamessis1, Sumedh M Joshi1, Greg Thomsen2 and Gustavo Rivera1, (1)Cornell University, Ithaca, NY, United States, (2)Applied Research Laboratories, U. of Texas, Austin, TX, United States
 
PO24E-2996
A NATURAL LABORATORY TO STUDY SHEAR-GENERATED TURBULENCE: THE WESTERN EQUATORIAL PACIFIC (90353)
Kelvin John Richards, University of Hawaii at Manoa, Honolulu, HI, United States
 
PO24E-2997
Estimation of vertical mixing with Thorpe scale on the continental slope of the southwestern East Sea (89240)
Seongbong Seo1,2, Young-Gyu Park2,3, Jae-Hun Park4 and Hee-Dong Jeong5, (1)KIOST, Ocean Circulation and Climate Research Center, Ansan, Korea, Republic of (South), (2)Korea University of Science and Technology, Integrated Ocean Sciences, Daejeon, Korea, Republic of (South), (3)KIOST Korea Institute of Ocean Science and Technology, Busan, South Korea, (4)Inha University, Department of Ocean Sciences, Incheon, South Korea, (5)NFRDI, Fisheries Resources and Environment Division, Gangneung, Korea, Republic of (South)
 
PO24E-2998
Local vs. Bulk Measures of the Mixing Efficiency in Breaking Internal Waves on Slopes (90042)
Robert S Arthur1, Jeffrey R Koseff2 and Oliver B Fringer2, (1)Stanford University, Stanford, CA, United States, (2)Stanford University, Civil and Environmental Engineering, Stanford, CA, United States
 
PO24E-2999
Accuracy of Thorpe scale dissipation estimates during mixing driven by internal tide breaking (92372)
Vamsi Krishna Chalamalla, Masoud Jalali and Sutanu Sarkar, University of California San Diego, La Jolla, CA, United States
 
PO24E-3000
Estimates of the Attenuation Rates of Baroclinic Tidal Energy Caused by Resonant Interactions Among Internal Waves based on the Weak Turbulence Theory (90975)
Yohei Onuki and Toshiyuki Hibiya, The University of Tokyo, Department of Earth and Planetary Science, Graduate School of Science, Tokyo, Japan
 
PO24E-3001
Energetics of Wind-Induced Internal Wave Radiation from the Base of the Mixed Layer in the North Atlantic (89912)
Georg Sebastian Voelker1,2, Christian Mertens1, Paul Glen Myers3, Dirk J Olbers4 and Maren Walter1, (1)University of Bremen, Bremen, Germany, (2)MARUM – Center for Marine Environmental Sciences, Bremen, Germany, (3)University of Alberta, Edmonton, AB, Canada, (4)Alfred-Wegener-Institute, Bremerhaven, Germany
 
PO24E-3002
Soliton Arrival Patterns Over the Chinese Upper Continental Slope During June 2014: Reaffirmations and Exploded Myths (88423)
Steven Ramp1, Yiing Jang Yang2, D. Benjamin Benjamin Reeder3, Ching-Sang Chiu3 and Fred Bahr4, (1)Soliton Ocean Services, Inc., Carmel Valley, CA, United States, (2)National Taiwan University, Taipei, Taiwan, (3)Naval Postgraduate School, Monterey, CA, United States, (4)MBARI, Moss Landing, CA, United States
 
PO24E-3003
Measurements of the Rate of Dissipation of Turbulent Kinetic Energy in a High Reynolds Number Tidal Channel (90512)
Justine McMillan1, Alex E Hay1, Rolf G Lueck2 and Fabian Wolk3, (1)Dalhousie University, Halifax, NS, Canada, (2)Rockland Scientific International Inc., Victoria, BC, Canada, (3)Rockland Scientific Inc, Victoria, BC, Canada
 
PO24E-3005
Wave-Induced Pressure Under an Internal Solitary Wave and Its Impact at the Bed (93256)
Gustavo Rivera1, Peter Diamessis2 and James Jenkins1, (1)Cornell University, Civil and Environmental Engineering, Ithaca, NY, United States, (2)Cornell University, Ithaca, NY, United States
 
PO24E-3006
Turbulence in the Pycnocline: Temporal and Spatial Scales (90905)
Holly Pelling, Bangor University, Menai Bridge, United Kingdom, Matthew R Palmer, NOCL, United Kingdom, Matthew Toberman, SAMS, Jeff Polton, National Oceanography Center, Liverpool, United Kingdom, Mark Inall, Scottish Association for Marine Science, Oban, United Kingdom and Tom Philip Rippeth, Bangor University, School of Ocean Sciences, Bangor, Wales, United Kingdom
 
PO24E-3007
Theoretical analysis of vertical mode internal waves affected by a vortex. (93516)
Kaoru Ito and Tomohiro Nakamura, Hokkaido Univ, Sapporo, Japan
 
PO24E-3008
The Impact of Oscillatory Currents and Stratification on Turbulent Dissipation in the Marginally Stratified Celtic Sea, U.K. (91621)
Marcus Zanacchi, Plymouth University, School of Marine Science and Engineering, Plymouth, United Kingdom, Phil John Hosegood, University of Plymouth, School of Biological and Marine Sciences, Plymouth, United Kingdom and Ricardo Torres, Plymouth Marine Laboratory, Plymouth, United Kingdom
 
PO24E-3009
Turbulent properties of a deep-sea hydrothermal plume in a time-variable cross flow using anisotropic mixing parameterizations in LES (92216)
Daniela Di Iorio1, J William Lavelle2 and Ian Gregory Adams1, (1)University of Georgia, Athens, GA, United States, (2)NOAA, Seattle, WA, United States
 
PO24E-3010
Nonlinear interaction of internal solitary-like waves in three-dimensional simulations (90534)
Kenji Shimizu, CSIRO Oceans and Atmosphere Flagship, Floreat, Australia and Keisuke Nakayama, Kobe University, Kobe, Japan
 
PO24E-3011
Nonlinear interaction of internal and acoustic-gravity waves in continuously-stratified ocean (93702)
Usama Kadri, University of Haifa, The Hatter Department of Marine Technologies, Haifa, Israel and Miao Tian, Woods Hole Oceanographic Institute, Physical Oceanography, Woods Hole, MA, United States
 
PO24E-3012
Instability and Mixing of Stratified Shear Layers Forced by Internal Wave Strain (89828)
Alexis Kaminski and John Ryan Taylor, University of Cambridge, Cambridge, United Kingdom
 
PO24E-3013
The Life-Cycle of High Frequency Internal Waves in a Continental Shelf Sea: Generation, Propagation and Dissipation”. (91196)
Anastasiia Domina, University of Liverpool, School of Environmental Sciences, Liverpool, United Kingdom, Matthew Palmer, National Oceanography Center, Liverpool, United Kingdom, Jonathan Sharples, University of Liverpool, Earth, Ocean and Ecological Sciences, Liverpool, L69, United Kingdom, Vasyl Vlasenko, Plymouth University and Mattias Green, Bangor University, School of Ocean Sciences, Bangor, LL59, United Kingdom
 
PO24E-3014
Why is no Near-Inertial Peak Observed in the Luzon Strait, a Major Internal Tide Generation Region? (91551)
Arnaud Le Boyer, Scripps Institut of Oceanography, MPL, San Diego, CA, United States, Matthew H Alford, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, United States and Andy Pickering, Universiy of Washington, APL, Seattle, WA, United States
 
PO24E-3015
Horizontal Structure of Turbulence on Decimeter to 10m Scales in Fast Tidal Flows (93100)
Rachel Horwitz and Alex E Hay, Dalhousie University, Halifax, NS, Canada
 
PO24E-3016
Distribution of TKE dissipation and turbulent mixing across at the central Namibian shelf (87402)
Volker Mohrholz1, Toralf Heene1 and Anja van der Plas2, (1)Leibniz-Institute for Baltic Sea Research Warnemünde, Physical Oceanography and Instrumentation, Rostock-Warnemünde, Germany, (2)Ministry of Fisheries & Marine Resources, Subdivision Environment, Swakopmund, Namibia
 
PO24E-3017
Multiscale modeling of internal waves and turbulence at rough, realistic topography with SOMAR-LES (93326)
Edward Santilli, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; Philadelphia University, Dept. of Sciences, Philadephia, PA, United States, Vamsi K Chalamalla, University of California at San Diego, Aerospace and Mechanical Engineering, San Diego, CA, Alberto D Scotti, University of North Carolina at Chapel Hill, Marine Sciences, Chapel Hill, NC, United States and Sutanu Sarkar, University of California San Diego, La Jolla, CA, United States
 
PO24E-3018
Near-surface energy transfers from internal tide beams to smaller vertical scale motions (93266)
Sherry Chou, University of Hawaii, Manoa, Honolulu, HI, United States, Chantal Staquet, Laboratoire des Écoulements Géophysiques et Industriels, Grenoble, France, Glenn S Carter, University of Hawaii at Manoa, Oceanography, Honolulu, HI, United States and Douglas S Luther, University of Hawaii at Manoa, Honolulu, HI, United States
See more of: Physical Oceanography/Ocean Circulation