Seasonal variation of sea surface current in the Gulf of Thailand Seasonal variation of sea surface current in the Gulf of Thailand (Special section for JSPS multilateral core university program on "coastal marine science": proceedings on 4th JSPS-VAST joint seminar on 'coastal marine science', Hai Phong, Viet Nam, 26-28 October 2009) -- (Special section: Oceanography)

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In this study, the seasonal variations in the surface water currents within the Gulf of Thailand were revealed through the use of (i) temperature and salinity data derived from the world ocean database, (ii) the monthly dynamic heights anomaly (DHA) from TOPEX/Poseidon and (iii) the ERS-2 altimetry data, during 1995-2001. The mean dynamic height (MDH) and mean geostrophic current were derived from the climatological temperature and salinity data, while the DHA data was derived from the MDH and their geostrophic currents. The mean geostrophic current showed a strong southwestward flow of the South China Sea water along the gulf entrance. Counterclockwise eddies in the inner gulf and the western side of the gulf entrance were associated with upwelling in the area. Seasonal geostrophic currents showed a basin-wide counterclockwise circulation during the southwest monsoon season and a clockwise circulation during the northeast monsoon season. Upwelling was enhanced during the southwest monsoon season. The circulation patterns varied seasonally probably due to the variation in wind regimes. Finally, the congregation, spawning, and migration routes of the short-bodied mackerel were found to conform to the upwelling and surface circulation in the gulf.Proceedings of 4th JSPS-VAST Joint Seminar on 'Coastal Marine Science', Hai Phong, Viet Nam, 26-28 October 2009Oceanography


  • Coastal marine science

    Coastal marine science 34(1), 91-102, 2010

    International Coastal Research Center, Atmosphere and Ocean Research Institute, the University of Tokyo


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