Development of Phase-resolved Operational Wave - Pessac, France - SUEZ

SUEZ
SUEZ
Entreprise vérifiée
Pessac, France

il y a 2 semaines

Sophie Dupont

Posté par:

Sophie Dupont

beBee Recruiter
Description

Development of phase-resolved operational wave forecasting for sites with highly irregular bathymetry:

  • Réf
    ABG-122894
  • Sujet de Thèse 15/04/2024
  • Cifre
  • SUEZ
  • Lieu de travail
  • Pessac (33) ou Bidart Nouvelle Aquitaine
  • France
  • Intitulé du sujet
  • Development of phaseresolved operational wave forecasting for sites with highly irregular bathymetry
  • Champs scientifiques
  • Ecologie, environnement
  • Mathématiques
  • Numérique


  • Mots clés

  • Canyon, bathymetric gradients, coast, wave field, flood,modeling, GPU Hardware
    Description du sujet:

Location:
Pessac (33) or Bidart (64), France.


Context:


Topic of the PhD project
Coastal submarine canyons are narrow, deep-water areas contrasting with the depth-limited continental shelf. Canyon boundaries are characterized by steep bathymetric gradients. Those gradients, together with the much larger depth inside the canyon, may largely affect the coastal wave field.

The canyon of Capbreton in SW France is an example of such a configuration, which induces a remarkable wave climate difference between north and south of the canyon [1,2].

This spatial variability of the wave field is exacerbated in extreme storm conditions, which raises important questions about its impact on the nearshore area and on coastal hazard situations for neighboring towns.

The particular features in the bathymetry are known to be the source of extreme waves due to strong wave focusing and phase coherences [3].

It is also not fully understood to what level these local wave phenomena impact the longshore variation of flood risk.

In this context, this PhD project focuses on the characterization of the impact along the shoreline of the wave field's spatial variability induced by remarkable bathymetric heterogeneities such as a coastal submarine canyon.

For that purpose, a phase-resolving numerical modeling study will be conducted in the Capbreton area using the recent Boussinesq-type code developed at the University of Pau [4,5].

Benefiting from the implementation of the code on GPU hardware, a large range of scenarios will be computed to characterize critical configurations in terms of wave run-up and the induced marine flooding along the shoreline, with a focus on the role of wave focusing and phase coherence mechanisms in the configurations.


Main activities

  • Improvement of the Boussinesqtype code developed at UPPA for a better management of dispersion and steep bathymetric gradients, as well as GPU optimization,
  • Deployment of the new code on Capbreton study case and validation against observational data,
  • Use of the model as part of sitespecific scenarios, identification of critical configurations and processes for runup, wave overtopping and coastal flood risk in Capbreton town,
  • Characterization of the role of wave focusing and phasecoherent processes in the determination of wave overtopping and related flood risk,
  • Feasibility assessment of the integration of the model into for real time prediction into an Early Warning System supporting wave overtopping and coastal flood risk management

Additional activities:

  • Participate in training and workshop activities of RESCUER project,
  • Contribute to the deliverables of RESCUER project.

Nature du financement:


  • Cifre

Précisions sur le financement:


Présentation établissement et labo d'accueil:


  • SUEZ

About the hosting laboratory


The proposed PhD project will be carried out within the framework of the
KOSTARISK laboratory. KOSTARISK is a joint cross-border research laboratory dedicated to observation and modelling to support coastal risk management.


It brings together 3 partner organizations:

the SIAME laboratory of the University of Pau et Pays de l'Adour (UPPA), the Spanish technology center AZTI, and the monitoring and forecasting center Rivages Pro Tech (RPT) of the SUEZ group.

The laboratory brings together researchers from the three organizations in order to implement scientific and technological cooperation in the fields of numerical modelling, physical measurement systems and advanced data analysis, for the development of tools to support the management and mitigation of coastal risks.

The KOSTARISK team is composed of 5 teacher researchers and 11 partner researchers (6 for RPT and 5 for AZTI).


About the employer institution


The doctoral student will be hired by the
SUEZ Eau France company and join the team of
Rivages Pro Tech (RPT).

RPT is SUEZ's monitoring and forecasting center for the management of water environments.

Located in Bidart and Pessac (France), RPT develops and operates operational oceanography solutions to support local authorities in coastal management.

The services offered by RPT are divided into two main activities:
(i) Water quality & health and (ii) Waves & coastal hazards. The PhD fellow will be conducted within the Waves & coastal hazard department. RPT's multidisciplinary team is composed of experts in ocean dynamics, hydrology,
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