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18 items found for ""

  • Wave and sea levels conditions for the design of protection structures of a coastal road

    Mumbai (India) Client : Sogreah Gulf Date of completion : 2019 For the design of protective structures of the new coastal road of Mumbai (India), Globocean has performed a metocean desktop study in order to provide extreme cyclonic waves and surges along the coast. The following missions were successively performed : Modelling of the offshore cyclonic swell (numerical model WaveWatchIII) Implementation of the wave propagation model (numerical model SWAN) Implementation of the hydrodynamic model (numerical model Telemac2D) Parametric modelling of the cyclonic wind pattern (numerical model of Holland) Atmospheric forcing of the numerical models by the synthetic wind fields and assessment of the extreme cyclonic waves and surges along the coast

  • Reproduction of the sea states encountered by the ferry boat Estonia when it sank

    Baltic Sea - 27th to 28th of September 1994 Client : Clyde and Co - Law Firm Date of completion : 2014 The ferry boat Estonia, handling regularly the sea route between Tallinn and Stockholm, sank during the night of the 27th to the 28th September 1994, causing the death of 852 people. At the request of Clyde and Co, Globocean has conducted a metocean study for the analysis of the meteorological situation, leading to the reproduction by numerical modelling of the winds and waves encountered by the vessel along its route till the time of its sinking in the middle of the Baltic Sea. The following steps were followed during the realization of this metocean study : Analysis of the synoptic charts of the meteorological situation of the 27th and 28th of September 1994 Validation and possible correction of the reanalyses of the numerical wind fields sourced from the general meteorological model Implementation of the wave model WaveWatch III around the Baltic Sea, and numerical simulation of the waves encountered by the vessel Estonia along its route Qualification of the waves generated by this gale compared to the usual storm regime in this area of the world

  • Metocean conditions for the design of a floating power plant

    Nouméa - New Caledonia Client : Nouvelle Calédonie Energie Date of completion : 2021 In the purpose of the design of the new floating power plant of Noumea deemed to be installed in the Bay, Globocean has performed a metocean desktop study in order to assess the non-cyclonic and cyclonic extreme winds , waves, currents and sea levels expected in the study area. The following steps were followed for the realization of this study : Implementation of a high resolution wind model inside the lagoon of Noumea (CFD software MeteoDyn) Set-up of a parametric cylonic wind model (Holland empirical formulation) Modelling of the offshore swell (software WaveWatchIII) Implementation and execution of a wave propagation model within the lagoon taking into account the wave breaking effect on the coral belt Implementation and execution of a 3D hydrodynamic model in the lagoon of Noumea Assessment of the non-cyclonic and cyclonic extreme conditions at the pre-defined study points (EVA sofware, POT methodology)

  • Impact study of sediment dumping at sea

    Capbreton (France) Client : Communauté de communes de Maremnes Adour Côte-Sud (MACS) Date of completion : 2020 - 2021 In order to study the environmental impact of sediment dumping off Capbreton, Globocean has performed the numerical modelling of the sediment plumes and seabed accumulations. The following steps were followed during the realization of this study : Numerical modelling of the offshore waves, Hydro-sediment modelling of the sediment concentrations and seabed accumulations, Study of the sediment plume spreading according to meteorological scenarios, Simulations of sediment dumping operations and analysis of the impact on the sensitive areas.

  • Study of the vulnerability to natural coastal hazards

    Region of Rabat-Salé-Kenitra (Morocco) Client : MDC Ingénierie Date of completion : 2019/2023 In order to realize an overview of the coastal natural risks to which is exposed the region of Rabat-Salé-Kenitra in Morocco and imagine further protective solutions, Globocean has been requested by MDC Ingénierie to assess the vulnerability of the coastal strip to natural hazards of erosion, sand accumulation, and marine submersion. The following tasks were successively achieved during realization : Modeling of offshore sea states (software WaveWatchIII) Wave propagation up to the shoreline (software SWAN) Modelling of the coastal currents (software Telemac2D) Sediment transport assessment by numerical modelling (softwares Telemac/Sysiphe) Study of marine submersion by numerical modelling (software Telemac 2D) GIS mapping of the vulnerability of the coastal strip to erosion and marine submersion hazards (software Qgis)

  • Wave, current and sea level conditions for the desalination plant of Sfax

    Sfax (Tunisia) Client : Sogreah Gulf Date of completion : 2021-2022 For the study of the stability of intake and exhaust pipelines of the desalination firm of Sfax, Globocean has conducted a study in order to assess the wave, current, and storm surges along theses pipelines. The following tasks were successively performed : Modelling of offshore sea-states (software WaveWatchIII Modelling of currents and sea levels in the project area (hydrodynamic softwareTelemac2D) Preparation of the atmospheric and astronomic inputs of the hydrodynamic model Validation current measurement within the project area (metocean survey) Extreme analysis of sea-states and storm surges conditioned to the sea level (Uni-variate extreme value analysis)

  • Assessment of extreme cyclonic swell for the mapping of wave submersion hazard in French Polynesia

    Tahiti, Moorea, and Bora-Bora (French Polynesia) Client : BRL Ingénierie Date of completion : 2021 For the elaboration of a hazard mapping of wave submersion in several island of French Polynesia, Globocean performed a specific cyclonic study based on dedicated numerical modelling and wind and wave observations by satellite. The following steps were performed for this study: Assessment of synthetic extreme cyclones by bi-variate extreme analysis (KDE iso-probable curves) Elaboration of the cyclonic atmospheric structure (parametric model of Holland) Modelling of the offshore cyclonic swell (software WaveWatchIII) Validation against satellite observations of cyclonic waves Modelling of the propagation of the cyclonic waves around the islands (software SWAN)

  • Project of forecasting of urban sea and river flooding

    Banyuls and Argelès-sur-Mer, Occitanie (France) Client : Région Occitanie Date of completion : 2020-2023 Globocean, associated to its industrial partner Seanaps-Advanced, has been awarded funding for the realization of a project of forecasting of marine submersion and river flooding, bidding at a call for project emitted by the region 'Occitanie' in the South of France. This project has been including the installation in both cities of Banyuls and Argelès-sur-Mer of an urban totem for information and education of the local population and tourists about the coastal hazards. In this context, the missions performed by Globocean have been : The implementation of a numerical model of sea water and river flooding (software Telemac2D) The modelling of maritime forcing in forecast (sea states models + Eurocode formulations for the estimation of overtopping flows) The integration of forecasts of rainfall rates and river flows as inputs in the flooding modelling The development of a routine prediction system for the automatic execution of the computing processing The installation of the routine prediction system and all the softwares in a remote server, with automatic sending of resulting flooding maps in forecast

  • Analysis of the stability of the exhaust pipe of the water treatment plant of Cap-Sicié

    Toulon (France) Client : Bonna TP Date of completion : 2022-2023 For an execution study, Globocean has assessed the hydrodynamic forces expected to apply on the exhaust pipeline of the water treatment plant of Cap-Sicié at Toulon once every fifty years on average, for the design of the ballasts in order to ensure its stability. The following tasks were successively performed : Modelling of the offshore sea states (software WaveWatchIII) Assessment of the extreme waves expected once every fifty years, by direct extreme value analysis (uni-variate EVA software) Propagation of the 50-yr extreme sea-states in the nearshore area (software SWAN) Modelling of the orbital velocities and accelerations (numerical wave flume model IH2VOF) Derivation of extreme drag, inertial, and lift hydrodynamic forces (Morisson formulation), and advice about the ballast weight to consider for the stability of the exhaust pipeline

  • Extreme wave height and storm surges for the design of the oil terminal of Djibouti

    Djibouti (Republic of Djibouti) Client : Somagec Date of completion : 2020 Globocean has performed a metocean study for the assessment of the extreme waves and sea levels, for the design of the new oil terminal of Djibouti. The following steps were followed for the realization of this study : Definition of extreme synthetic cyclone patterns (wind parametric mode of Holland) Modelling of the offshore cyclonic swell (software WaveWatchIII) Cyclonic swell propagation in the nearshore area up to the location of the oil terminal (software SWAN on an unstructured grid) Currents and sea levels modelling (hydrodynamic model Telemac2D) Synthesis of the extreme cyclonic conditions around the oil terminal

  • Usual & Extreme wave assessment for the layout of the harbour as a hub for offshore wind turbines

    La Turballe (FRANCE) Client : BRLi Date of completion : 2019 In the context of the development of a wind turbine hub to support the expansion of offshore commercial wind farms, Globocean has performed a metocean desktop study in order to design the protection structures of the harbour of La Turballe and to check the operability of the dedicated berths. The following steps were successively performed : Offshore wave modelling (WaveWatchIII software) Configuration and execution of a nearshore wave propagation model (SWAN Software) Validation of the wave propagation model against wave measurements (Candhis buoy network) Sensitivity of the wave propagation to the tidal levels and currents Propagation of swell and wind-sea extreme and usual scenarios

  • Preliminary design of a floating photovoltaic solar farm

    Assessment of wind and wave statistical conditions for the preliminary design of a floating photovoltaic solar farm - Gulf of Lion (FRANCE) Client : SolarInBlue Date of completion : 2020 For a feasibility study of installation of floating photovoltaic farms along the Mediterranean coastline, Globocean has defined the wind and wave statistical conditions at each grid point of an unstructured model, and in a second step a more accurate assessment of the wind and wave regimes expected at 2 specific locations identified as potential spots of interest. The following missions have been realized during this study: Offshore wave modelling in the Gulf of Lion (WaveWatchIII software) Wave propagation in the nearshore area (SWAN software) Validation of the nearshore wave modelling against coastal buoys measurements (Candhis buoy network) Extreme statistical analysis of winds and waves (EVA software) Usual statistics of the main wave regime Production of wind and wave statistical quantiles in grid point Accurate analysis of the wind and wave statistical conditions for 2 potential spots of interest

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