PO14C:
Deep and Abyssal Ocean Mixing: From Small-Scale Turbulence to the Large-Scale MOC IV Posters


Session ID#: 11496

Session Description:
Diapycnal mixing plays an important role in the Meridional Overturning Circulation (MOC). It is, for example, the primary mechanism by which bottom water is converted to lighter deep water to close the deep cell of the MOC. The enhancement of mixing over rough topography that has been observed affects our theories and simulations of ocean circulation. The many mechanisms of mixing, however, are not entirely understood or quantified. Furthermore the energy sources and boundary conditions for mixing will change with the climate, so mixing may play an important role in climate change. A chain of processes connects the energy sources to the scales of turbulence. Such processes include, but are not limited to, the cascade of energy through the internal wave field from wind and tidal forcing, shear instability and hydraulic jumps associated with topographic constrictions or descending overflows, and lee waves generated by geostrophic flow over rough topography. Abstracts are welcome on all individual aspects of this subject, as well as on studies connecting small scale processes to large scale energetics and circulation.
Primary Chair:  Ali Mashayek, Massachusetts Institute of Technology, Cambridge, MA, United States
Chairs:  James R Ledwell, WHOI, Woods Hole, MA, United States, James B Girton, University of Washington, Applied Physics Laboratory, Seattle, WA, United States and Glenn S Carter, University of Hawaii, Manoa, Honolulu, HI, United States
Moderators:  James R Ledwell, Woods Hole Oceanographic Institution, Woods Hole, MA, United States and Glenn S Carter, University of Hawaii at Manoa, Oceanography, Honolulu, HI, United States
Student Paper Review Liaison:  Glenn S Carter, University of Hawaii at Manoa, Oceanography, Honolulu, HI, United States
Index Terms:

4532 General circulation [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):
  • PC - Past, Present and Future Climate
  • TP - Turbulent Processes

Abstracts Submitted to this Session:

 
PO14C-2798
Performance of microstructure measurements using fast-response thermistors attached to a CTD-frame (87395)
Yasutaka Goto, Ichiro Yasuda and Maki Nagasawa, University of Tokyo, Bunkyo-ku, Japan
 
PO14C-2799
Global Ocean Circulation in Thermohaline Coordinates and Small-scale and Mesoscale mixing: An Inverse Estimate. (87467)
Sjoerd Groeskamp, University of New South Wales, School of Mathematics and Statistics, Sydney, Australia, Jan David Zika, University of Southampton, Southampton, United Kingdom, Trevor J McDougall, University of New South Wales, Sydney, NSW, Australia and Bernadette Sloyan, CSIRO Marine and Atmospheric Research Hobart, Hobart, TAS, Australia
 
PO14C-2801
Vertical structure of turbulent mixing in the Bussol’ Strait and its impact on water masses in the Okhotsk Sea and the North Pacific (88366)
Ichiro Yasuda, The University of Tokyo, Atmosphere and Ocean Research Institute, Kashiwa, Japan
 
PO14C-2803
Direct microstructure observation in the northern South China Sea (88747)
Qingxuan Yang, Xiaodong Huang, Wei Zhao and Jiwei Tian, Ocean university of China, Qingdao, China
 
PO14C-2804
Diapycnal Mixing Deductions From the Large-Scale, Time-Mean, World Ocean Temperature-Salinity Distribution (89560)
Olivier Arzel and Alain Colin de Verdière, Laboratoire de Physique des Océans, Brest, France
 
PO14C-2805
The internal gravity wave spectrum in two high-resolution global ocean models (89679)
Brian K Arbic1, Joseph K Ansong1, Maarten C Buijsman2, Eric L Kunze3, Dimitris Menemenlis4, Malte Müller5, James G Richman6, Anna Savage1, Jay F Shriver7, Alan J Wallcraft8 and Luis Zamudio9, (1)University of Michigan Ann Arbor, Ann Arbor, MI, United States, (2)University of Southern Mississippi, Stennis Space Center, MS, United States, (3)NorthWest Research Associates Redmond, Redmond, WA, United States, (4)Jet Propulsion Laboratory, Pasadena, CA, United States, (5)Norwegian Meteorological Institute, Oslo, Norway, (6)COAPS, Florida State University, Tallahassee, FL, United States, (7)US Naval Research Laboratory, Stennis Space Center, MS, United States, (8)Naval Research Laboratory, Stennis Space Center, MS, United States, (9)Florida State University, Tallahassee, FL, United States
 
PO14C-2806
Observation and Modelling of Turbulent Mixing in a Northwestern Pacific Ocean Trench (89738)
Hongzhou Xu1, Liu Yu1, Shiqiu Peng2 and Qiang Xie3, (1)Sanya Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya, China, (2)SCSIO South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China, (3)Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya, China
 
PO14C-2807
Characterization of bathymetric constraints on deep ocean circulation in the Kauai Deep region around Station ALOHA (90302)
Robert Walter Deppe, Roger Lukas and Fernando Santiago-Mandujano, University of Hawaii at Manoa, Honolulu, HI, United States
 
PO14C-2809
Circluation of the Lau Basin (90525)
Elizabeth Simons, Geophysical Fluid Dynamics Institute, Tallahassee, FL, United States
 
PO14C-2810
The Effect of Mixing Locality on Overturning Circulation (90751)
Angus Gibson, Australian National University, Research School of Earth Sciences, Canberra, Australia and Andrew M. Hogg, Australian National University, Canberra, ACT, Australia
 
PO14C-2811
Experimental description of turbulent energy fluxes associated with the parametric subharmonic instability (90984)
Yvan Dossmann, Philippe Odier, Christophe Brouzet, Sylvain Joubaud, Baptiste Bourget and Thierry Dauxois, Ecole Normale Supérieure de Lyon, Laboratoire de Physique, Lyon, France
 
PO14C-2812
Modelling the Effect of Large Submarine Sandslides on the Ocean Circulation (91109)
Alessandro Mozzato1, David Roy Munday2, Helen Johnson3 and Peter J Talling1, (1)National Oceanography Centre, Southampton, United Kingdom, (2)British Antarctic Survey, Cambridge, United Kingdom, (3)University of Oxford, Earth Sciences, Oxford, United Kingdom
 
PO14C-2813
Large Kelvin-Helmholtz Billow Trains Observed in the Kuroshio above a Seamount (91350)
Ming-Huei Chang1, Sin-Ya Jheng1 and Ren-Chieh Lien2, (1)IONTU Institute of Oceanography National Taiwan University, Taipei, Taiwan, (2)Univ Washington, Seattle, WA, United States
 
PO14C-2814
Vertical Velocities and Mixing Estimated from Seagliders (92554)
Eleanor Frajka-Williams, University of Southampton, United Kingdom, Victoria Sian Hemsley, National Oceanography Centre Southampton, Ocean Biogeochemistry and Ecosytems, Southampton, United Kingdom, Adrian P Martin, National Oceanography Centre, Southampton, United Kingdom and Stuart C Painter, National Oceanography Center, Liverpool, L3, United Kingdom
 
PO14C-2815
Spatial variability of deep mixing in a Mid-Ocean Ridge fracture zone in the Brazil Basin (92528)
Louis Clement, Lamont-Doherty Earth Observatory, Columbia University, New York, United States, Andreas M Thurnherr, Lamont-Doherty Earth Observatory, Palisades, NY, United States and Louis St Laurent, Woods Hole Oceanographic Institution, Physical Oceanography, Woods Hole, MA, United States
 
PO14C-2816
The BP Blow-out Oil Material, Steady-state, Deepwater, Horizontal Plume: Analysis of this Opportunistic, Mesoscale, Hydrocarbon-tracer Field Data for Isopycnal and Diapycnal Eddy Diffusion Coefficients. (92634)
Louis J Thibodeaux1, Adam Melvin1, Arthur Rost Parsons2, Edward B Overton3 and Scientific Team of modeling horizontal oil spill intrusions, (1)Louisiana State University, Baton Rouge, LA, United States, (2)NOAA/NESDIS/NCEI-MS, Stennis Center, MS, United States, (3)Louisiana State University, Environmental Sciences, Baton Rouge, LA, United States
 
PO14C-2817
On Boundary Mixing (92977)
Truk Nizlop, Self Employed, Washington, DC, United States, Kurt L Polzin, WHOI, Woods Hole, MA, United States and unindicted co-conspirators
 
PO14C-2818
Deep water velocities and particle displacements induced by acoustic-gravity waves from submarine earthquakes (93377)
Tiago Castro Alves Oliveira, University of Haifa, The Hatter Department of Marine Technologies, Haifa, Israel and Usama Kadri, Massachusetts Institute of Technology, Boston, United States
 
PO14C-2819
Eikonal Simulations for the Energy Transfer in the Deep Ocean Internal Wave Field near Mixing Hotspots (93733)
Takashi Ijichi and Toshiyuki Hibiya, The University of Tokyo, Department of Earth and Planetary Science, Graduate School of Science, Tokyo, Japan
 
PO14C-2820
Effects of temporal variation in tide-induced vertical mixing on thermohaline circulation: Numerical experiments for the case of the Okhotsk Sea (93789)
Tomohiro Nakamura1, Keisuke Uchimoto2, Humio Mitsudera1 and Masaaki Wakatsuchi1, (1)Hokkaido University, Sapporo, Japan, (2)RITE, Kyoto, Japan
 
PO14C-2821
From Internal Waves to Mixing and Transformation Rates: Observations in the Southern Ocean (Invited) (93875)
Amelie Meyer1, Bernadette Sloyan2, Kurt L Polzin3, Helen Elizabeth Phillips4 and N L Bindoff4,5, (1)Norwegian Polar Institute, Ocean and Sea Ice, Tromsø, Norway, (2)CSIRO Marine and Atmospheric Research Hobart, Hobart, TAS, Australia, (3)WHOI, Woods Hole, MA, United States, (4)University of Tasmania, Institute for Marine and Antarctic Studies, IMAS, Hobart, Australia, (5)CSIRO Marine and Atmospheric Research Hobart, Hobart, Australia
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