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Coastal and Continental Morphodynamics laboratory


scientific production online repository

The "Coastal and Continental Morphodynamics" laboratory (M2C) is a Joint Research Unit (UMR 6143) created in 1996, under the supervision of the French National Center for Scientific Research (CNRS), the university of Caen Normandie (UNICAEN) and the university of Rouen Normandy (URN). The staff of the laboratory includes 86 persons: 37 researchers, 21 engineers and technicians, 28 PhD students. The research of the M2C laboratory focuses on the characterization and modeling of natural processes dynamics in different compartments along the LAND-SEA continuum, at different scales of time and space. The research is organized into 5 themes:
  • Watershed
  • Estuary
  • Coastal

 

This research is carried out with an interdisciplinary approach integrating researchers specialized in mechanics, geosciences, oceanography, hydrology, microbiology and ecology of organisms. Our research combines in-situ measurements with numerous dedicated equipment, experimental approaches and numerical moodeling.

Number of records

1 115

 


Evolution of records

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Last publications

[hal-03536405] A winter storm in Alderney Race: Impacts of 3D wave–current interactions on the hydrodynamic and tidal stream energy

(21/01/2022)  
Due to the climate change, it is necessary to modify the energy modes of production. The mix energetic, based on renewable energies as tidal currents, is one of the solutions to decrease the energy production carbon footprint. This article focuses on hydrodynamic interactions in Alderney Race (France), which is the most energetic tidal site in Western Europe with a maximum potential of 5.1GW according to Coles et al. (2017). The impact of a winter storm occurring during spring tide is assessed thanks to numerical modeling with a 3D fully-coupled wave–current model and in-situ data. This study starts to analyze the impacts of the storm on the wave field and the current effects on waves. Then, the modifications of the current and tidal stream energy caused by waves are discussed. After a successful validation step with excellent PBIAS and R2 scores, the main finding are: (i) although the current intensity is strong (around 3–4m s−1), the wave action significantly changes the vertical profile of the current, with a reduction of the PBIAS by a factor of 1.78 between simulations with and without wave effects, (ii) ocean waves affect the tidal asymmetry, with a flood current whose intensity is 13% higher than for the ebb current, inducing a decrease of 30% in the tidal stream energy, (iii) the flow is very sensitive to the angle between the directions of propagation of waves and current, with an acceleration or a reduction of the velocity, as observed in the presence of a 3D turbulent structure, (iv) current effects on waves cause a wavenumber shift, changes in significant wave height (modulated by tide), wave direction due to refraction and an increase of the energy transfer from waves to ocean ascribed to the wave breaking. By a feedback mechanism, the modifications of the wave field by current and water level significantly alter the flow with a decrease of its velocity when waves propagate against current. This study shows that the 3D wave–current interactions need to be considered during a storm even during a spring tide event where currents are the strongest.

[hal-03341608] Key factors influencing metal concentrations in sediments along Western European Rivers: A long-term monitoring study (1945–2020)

(25/01/2022)  

[hal-03517307] Key factors influencing metal concentrations in sediments along Western European Rivers: A long-term monitoring study (1945–2020)

(21/01/2022)  

[hal-03511189] The Hydrodynamic Behavior of Vortex Shedding behind Circular Cylinder in the Presence of Group Focused Waves

(18/01/2022)  

[hal-03455762] Réponses hydrologiques à des scénarisations climatiques sur le bassin de la Seine : une approche par modification du contenu spectral des pluies sur le bassin versant en fonction des caractéristiques spectrales de la variabilité climatique à grande échelle.

(14/01/2022)  

[hal-01982516] Theoretical calculation of the power of wind turbine or tidal turbine

(01/12/2021)  

[hal-03432802] The Great Acceleration is real and provides a quantitative basis for the proposed Anthropocene Series/Epoch

(25/11/2021)  

[hal-03350591] Eustatic knickpoint dynamics in an uplifting sequence of coral reef terraces, Sumba Island, Indonesia

(14/01/2022)  

[insu-03523098] Évolution du mont sous-marin des Glorieuses (SO Océan Indien) et du bassin profond Somali depuis le Crétacé

(14/01/2022)  

[hal-03418389] Analyse combinée de l’évolution morphologique et de l’architecture interne d’une flèche littorale mixte sablo-graveleuse active (baie de Somme, France)

(08/11/2021)  

 

 

International collaboration (co-authors)

 

 

M2C lab. in Caen

Morphodynamique Continentale et Côtière
Université de Caen Normandie (Campus 1)
24 rue des Tilleuls
14000 Caen Cedex

M2C lab. in Rouen

Morphodynamique Continentale et Côtière
Université de Rouen Normandie (bâtiment Blondel Nord)
Place Emile Blondel
76821 Mont-Saint-Aignan Cedex