6es Journées Scientifiques
de l'Université du Sud Toulon-Var

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6es journées scientifiques de l’USTV
 
 

TURBINTERMED

Dernière modification le : 17 avril 2012

Mardi 17 et Mercredi 18 avril 9h - 18h 
Salle Puget

Cette manifestation internationale annuelle concerne les mécanismes à petite échelle de turbulence et ondes internes responsables d’une part de flux énergétiques verticaux de l’atmosphère vers le fond de l’océan qui mal connus et paramétrés dans les modèles climatiques et d’autre part de la dispersion de matières dissoutes et particulaires en surface de l’océan sous l’influence du vent (nutriments, polluants).

titre documents joints

INTRODUCTION
In the framework of the Mediterranean Programme HYMEX - MISTRALS Mediterranean Integrated Studies at Regional and Local Scales initiated by the french CNRS –INSU Institut National des Sciences de l’Univers :
http://www.hymex.org
an international workplan is prepared for years 2010 – 2015 dealing with the water cycle budget in the Mediterranean basin (Evaporation / Rains- Coastal Discharge).

The scientific objective is a better understanding, forecasting and management of the impact of climate change on coastal regions, including heavy rains, water quality, dense water formation and land-sea exchanges.

Progress are also expected in modelling and measurements using RV cruises, moorings, radars, aircrafts, gliders, drifted buoys, turbulence profilers and satellite images.

This collaborative project is also including a basic research component and reaching an international level by welcoming teams from abroad.

The vertical transport from atmosphere to the bottom of ocean has been identified as a topical problem for climate models and air/sea exchanges, due to complex processes including sea surface exchanges, mixing layer, pycnocline and internal waves. The high resolution recent models (1 km along horizontal, 1 m on vertical) and measurement tools allow to better investigate the turbulence and wave fields, especially in stratified flows where stable layers and propagating internal waves play a contradictory role in the vertical motion.

The microtidal Mediterranean sea is a challenging place to investigate separately different forcing factors like a diversified bathymetry, pronounced seasonal thermocline, strong non homogeneous winds and river discharge influence.

Field campaigns, satellite observations (with an often clear sky area), coupled ocean – atmosphere – ocean – biogeochemistry models will be developed in the framework of the MED programme with both process and operational oriented work plans. So, sub-grid dispersion and mixing measurements and models will be in the background of most of investigations but it would be useful to prepare transverse dedicated common projects in this specific field.

This annual TURBINTERMED Workshop aims to get together specialists on marine turbulence and internal waves to exchange experiences, fix the specific knowledge in Mediterranean sea and prepare a working plan starting in 2013 in the framework of the french MISTRAL call and other European and International ones. The Neptune days are recognized by the USTV doctoral school as disciplinary lectures.

http://www.dt.insu.cnrs.fr/c-med/c-med.php
and other international projects.

This workshop will be organized in Toulon, thanks to the „Journées Neptune„ sponsored by the University and regional councils. A limited number of well known scientists in the field will be invited, when this 2 days workshop will be widely announced, but a limited number of participants will be fixed to 40 due to available facilities. PhD students are especially welcome.

This third meeting (2012), will focus on :
- Theoretical models including rotation : non conventional beta effect
and new results on Navier-Stokes and Shallow Water equations and models.
- Air - sea interface : revisiting Bulk formulae (unsteady and small
scale non homogeneous wind forcing)
- Vertical energy transfer from atmosphere to the bottom of sea including quasi inertial and internal waves and dense water formation
- High Resolution modelling, LES, non hydrostatic models.

PROGRAM

The two days Workshop will be organized around given topics including keynote lectures in the morning and parallel round tables and discussions in the afternoon.

Tuesday April 17 Morning

10h : Opening

Session 1 : Theory

10h30 : Once more about rotating shallow-water turbulence
Prof. Vladimir Zeitline, Ecole Normale Paris – Laboratoire Météorologie Dynamique

11h : Turbulence as vortex-dipole chaos solves the last enigma of classical physics
_ Dr. Helmut Baumert, IAMARIS, Hamburg

11h30 : Toroidal cascade in stably stratified turbulence
Dr. Claude Cambon, Ecole Centrale Lyon

Session 2 : Marine Turbulence

12h : Mixing and internal waves in Tokyo bay
Prof. Hidekatsu Yamazaki, Tokyo University

12h30 : lunch

Tuesday April 17 Afternoon

14h : Underflow mixing in a reservoir : A case study of applications in coastal regions
Prof. Elena Roget and Jesus Planella, Universitat Girona

14h30 : Turbulence measurements (SCAMP) in the Gulf of Lions, North Western Mediterranean.
A.Petrenko, A. Doglioli, R. Rainaud, D. Malengros, F. Nencioli, MIO, Marseille

15h30 : Marine turbulence and fractal dimension
Prof. Jose Manuel Redondo, Universitat Polmitecnica Catalunya, Barcelone

16h : Coffee break

Session 2 : Marine Turbulence Measurement

16h30 : Round table : Turbulence (A. Petrenko, Y. Cuypers)

Session 3 : Post doc and PhD sudents presentation

18h : Advances in baroclinic instability around an equilibrium state
Alexandre Piéri, Ecole Centrale Lyon

18h20 : Physical characteristics and behavior of the coastal LATEX09 eddy from in situ data and numerical modeling.
Marion Kersalé, MIO, Marseille

18h40 : Lyapunov Analysis in the COaSTal Environment – LACOSTE, Marie Curie IEF Project
Francesco Nencioli, MIO, Marseille

20h : Diner

Wednesday April 18 Morning

Session 4 : Modelling

09h30 : 3D two phase flow on unstructured grids
Dr. Frederic Golay, Imath USTV

10h : Numerical methods for stratified flows
Dr. Ludek Benes, Czech Tech. Univ. Prague

10h30 : Coffee break

11h : Non hydrostatic coastal Models
Dr. Juxing Xing, NOC, Liverpool

11h30 Round table : Modeling effort in coastal seas
Conveners : Dr. Juxing Xing, NOC, Liverpool, Philippe Fraunié, MIO

Session 5 : Micro Scale Measurements

12h : Round table : International Projects
Conveners : Jose Manuel Redondo, UPC

12h30 : Lunch

Session 6 : Lagrangian turbulence and Data assimilation

14h – 18h : Common session with the ROW meeting.

18h30 : General discussion and closure

Contact :
- Pr. Philippe FRAUNIÉ, fraunie@univ-tln.fr
Institut Méditerranéen d’Océanologie (MIO)

 
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