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This research focuses on an assessment of tidal energy resource potential along the coast of the Andaman sea in Thailand by using POM, ROMS and SMS models that were developed under hydrodynamic hypothesis. In POM and ROMS modelling, the bathymetric information from satellite data and database of salinity and temperature were used for defining the condition of models at a 3 km resolution. The SMS model resolution was 25 m. The M/P and RMSE were used to validate the models by comparing with 4 observed datasets. Furthermore, the potential tidal resources map was prepared by classifying the area into three classes, i.e., high, middle and low potential. The simulation showed that the tidal current speed was in the range of 0.3-0.5 m/s. The power density of the kinetic energy was in the range of 150-160 W/m2. The highest potential areas are the Pak Phra Strait in Phuket-Phang Nga Province and Kra Buri estuary in Ranong Province. The mean error of the map was in the range of 8-30%. Therefore, tidal energy resources along the coast of the Andaman sea in Thailand was sufficient for further development of the power generation using the underwater current.
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