Physical, Littoral and Coastal Oceanography team (OPLC)

Manager : Charles-Antoire Guérin

 

Improving our knowledge of the ocean state and its predictability requires a thorough description of the physical processes that are involved in ocean dynamics through a large continuum of scales. Investigating these processes at different scales in the ocean and at its upper and lower boundaries is the main objective of the OPLC research team at the MIO laboratory. Documenting the interactions between scales is a major focus of the team because such interactions are generally poorly understood and, thus, neglected or empirically represented [Ed.1] in ocean models. The perspective of scale interactions dictates the activities of our team, the members of which have skills that cover a wide range of fields in the areas of physical modelling and experimentation. In the context of global change, the environmental and societal applications of the aforementioned fundamental research take a growing role in the activities of the team, with a specific transverse thematic approach now devoted to this research at the MIO laboratory.

The aim of the laboratory's Physical, Coastal and Marine Oceanography (OPLC) team is to study multi-scale processes and their interactions in ocean dynamics and with the atmosphere. The interaction between these different scales remains poorly understood and is therefore often neglected in models, or represented empirically. This issue raises a number of open questions that the team's expertise, covering all scales, enables it to address. Furthermore, in a context of global change, the environmental and societal applications of this research are an integral part of the OPLC team's activities, through theme 3 as well as via the laboratory's cross-disciplinary axes.

Our three themes

Vertical exchanges inside the water column and at its interfaces

  • Vertical fluxes through the atmospheric and bottom boundary layers
  • Turbulent processes inside the water column and in atmospheric and bottom boundary layers
  • Electromagnetic signatures of water states

Towards a better representation of ocean dynamics through a better knowledge of multi-scale processes

  • Bathymetric effects and wave/current interactions
  • Dynamics of the swash zone and morphodynamics of sandy beaches
  • Lagoon and cross-shore reef barrier dynamics
  • Effects of (sub)-mesoscale dynamics on circulation and mass transport (including biogenic tracers)
  • Mesoscale variability of rip currents 
  • Interactions in the coastal transitional zone, and in-shore/off-shore exchanges

Environmental and societal issues

  • Anthropogenic forcing of lagoons dynamics
  • Renewable marine energy
  • Lagrangian tracking of macro-waste
  • Dispersion of contaminants 
  • Climatic scenarios in the Mediterranean Sea

Our projects

Resources

The OPLC team's activity relies on a panel of complementary skills in experimentation – observation – and modelling. This background is essential for the development of multi-scale approaches, which are required to study the complex dynamics of coastal oceans. A wide variety of measurement techniques are mastered and enforced by the OPLC team :

  • HF and VHF radar teledetection for the characterization of sea states and the measurement of water and wind velocities
  • Design and deployment of instrumented moorings
  • Towed instrumented fishes (MVP and minibat)
  • the use of drifting buoys
  • Instrumentation of the littoral domain, neighboring beaches and of the surf-zone
  • Use of satellite data (visible and micro-wave frequencies)
  • Experiments with wave flumes, oceanic basins, air-sea interaction facilities, erodimeters, etc...
  • The design, use and operation of Eulerian (hydrodynamic model, possibly coupled with atmospheric and/or biogeochemical models) and Lagrangian numerical models
  • Use and exploitation of satellite data (SSH, SST, SSW, etc.) 

Physics in oceanology

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