PS42A:
Transport and Coherent Structures: New and Traditional Approaches for Studying Ocean Stirring and Mixing IV


Session ID#: 36956

Session Description:
Ocean flows are dominated by coherent structures, like eddies, with lifetimes longer than typical dynamical timescales. Due to their capacity to transport water and material over long distances, these features play an important role in climate, biogeochemistry, and small-scale mixing. Recently, there has been an influx of powerful techniques from the mathematical literature for identifying coherent structures in ocean flows. These include ideas focussed on Lagrangian flow maps, dynamical systems theory, and set-theoretic approaches involving transfer operators and clustering. There remain many questions about how these novel ideas are related to traditional metrics of ocean mixing. For example, how can coherent structures improve eddy parameterizations in ocean models? How do sparse sampling, noise, and smoothing impact the identification of coherent structures, which frequently requires the full flow? How can we exploit novel observational approaches such as autonomous robots, clustered drifter releases, or remote sensing? We invite contributions on transport and coherent structures, including new Eulerian and Lagrangian approaches, numerical modeling studies, observational error assessments, and applications to problems in ocean physics and biogeochemistry. Our hope is to engage a broad swath of the community to help bring these methods to bear on important contemporary problems in oceanography.
Primary Chair:  Ryan P Abernathey, Lamont -Doherty Earth Observatory of Columbia University, Palisades, United States
Co-chairs:  Irina Rypina, Woods Hole Oceanographic Institution, Physical Oceanography, Woods Hole, MA, United States, Jonathan M Lilly, Northwest Research Associates, Bellevue, WA, United States and Shane R Keating, University of New South Wales, Sydney, NSW, Australia
Moderators:  Irina Rypina, WHOI, Woods Hole, United States, Jonathan M Lilly, Northwest Research Associates, Bellevue, WA, United States, Ryan P Abernathey, Lamont -Doherty Earth Observatory of Columbia University, Palisades, United States and Shane R Keating, University of New South Wales, Sydney, NSW, Australia
Student Paper Review Liaison:  Shane R Keating, University of New South Wales, Sydney, NSW, Australia
Index Terms:

4273 Physical and biogeochemical interactions [OCEANOGRAPHY: GENERAL]
4520 Eddies and mesoscale processes [OCEANOGRAPHY: PHYSICAL]
4528 Fronts and jets [OCEANOGRAPHY: PHYSICAL]
4568 Turbulence, diffusion, and mixing processes [OCEANOGRAPHY: PHYSICAL]
Cross-Topics:
  • BN - Biogeochemistry and Nutrients
  • OM - Ocean Modeling
  • PL - Physical Oceanography: Mesoscale and Larger

Abstracts Submitted to this Session:

Targeted drifter deployments around Martha's Vineyard to uncover Lagrangian transport structures (325803)
Shane D Ross1, Irina Rypina2, Shawn Shadden3, Thomas Peacock4, Pierre F J Lermusiaux5, Michael Allshouse6, Glen Gawarkiewicz7, Anthony Kirincich8, Mattia Serra9, Margaux Filippi10, David G Schmale III11, Craig A Woolsey12, Patrick J Haley Jr13, Sudip Jana14, Christopher Mirabito13, Chinmay Kulkarni10, Arkopal Dutt10, Abhinav Gupta10, Wael Hajj Ali15 and Siavash Ameli16, (1)Virginia Tech, Kevin T. Crofton Department of Aerospace and Ocean Engineering, Blacksburg, VA, United States, (2)WHOI, Woods Hole, United States, (3)University of California, Berkeley, Berkeley, CA, United States, (4)Dept of Mech Eng - RM 1-310, Cambridge, United States, (5)Massachusetts Institute of Technology, Department of Mechanical Engineering, Cambridge, MA, United States, (6)Northeastern University, Department of Mechanical and Industrial Engineering, Boston, MA, United States, (7)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (8)Woods Hole Oceanographic Inst, Woods Hole, MA, United States, (9)ETH Zurich, Switzerland, (10)Massachusetts Institute of Technology, Cambridge, MA, United States, (11)Virginia Tech, School of Plant and Environmental Sciences, Blacksburg, United States, (12)Virginia Polytechnic Institute and State University, Kevin T. Crofton Department of Aerospace & Ocean Engineering, Blacksburg, VA, United States, (13)Massachusetts Institute of Technology, Department of Mechanical Engineering, Cambridge, United States, (14)Massachusetts Institute of Technology, Department of Mechanical Engineering, MA, United States, (15)Massachusetts Institute of Technology, Mechanical Engineering, Cambridge, MA, United States, (16)University of California, Berkeley, Berkeley, United States
The detection of Lagrangian Transport Structures in a coral reef atoll (317787)
Margaux Filippi1, Matthew Rayson2, Alireza Hadjighasem1, Gregory N Ivey3, Ryan Lowe4, James Gilmour5 and Thomas Peacock6, (1)Massachusetts Institute of Technology, Cambridge, MA, United States, (2)The University of Western Australia, School of Civil, Environmental and Mining Engineering and UWA Oceans Institute, Crawley, Australia, (3)University Western Australia, Oceans Graduate School and Oceans Institute, Crawley, Western Australia, Australia, (4)The University of Western Australia, ARC Centre of Excellence for Coral Reef Studies, Crawley, WA, Australia, (5)Australian Institute of Marine Science, Perth, Australia, (6)Dept of Mech Eng - RM 1-310, Cambridge, United States
Surface Mixing and Biological Activity in the North African Upwelling (316833)
Anass El Aouni1,2, Khalid Daoudi3, Hussein Yahia3 and Khalid Minaoui4, (1)Mercator Ocean International, Toulouse, France, (2)INRIA of Grenoble, Grenoble, France, (3)GeoStat team, INRIA Bordeaux Sud-Ouest, Talence, France, (4)University of Rabat, Rabat, Morocco
SMILE, The Submesoscale Mixed-Layer Eddies Experiment (324821)
James B Girton, University of Washington, Applied Physics Laboratory, Seattle, United States, Eric Kunze, Northwest Research Associates, Redmond, WA, United States, John Mickett, Applied Physics Laboratory University of Washington, Seattle, United States and J. Thomas Farrar, WHOI, Physical Oceanography, Woods Hole, MA, United States
Exchange Between a Deep Coherent Eddy and its Surroundings, Studied with Subsurface Floats (316487)
Henrik Soiland, Institute of Marine Research and Bjerknes Center for Climate Research, Bergen, Norway and Ilker Fer, Geophysical Institute, University of Bergen and Bjerknes Center for Climate Research, Bergen, Norway

See more of: Physical Oceanography: Mesoscale and Smaller