Floating Circle of Objects Simulation with the Princeton Ocean Model for the Gulf of Thailand

Chairote YAIPRASERT; Krisanadej JAROENSUTASINEE; Tawat VERUTTIPONG

Authors

Chairote YAIPRASERT School of Science, Walailak University, Thasala, Nakhon Si Thammarat 80161
Krisanadej JAROENSUTASINEE School of Science, Walailak University, Thasala, Nakhon Si Thammarat 80161
Tawat VERUTTIPONG Communication Ground Systems Section, Jet Propulsion Laboratory, California Institute of Technology, California

Keywords:

Floating circle of objects, Hydrodynamic model, Princeton ocean model, Satellite, Sea surface elevation

Abstract

The Princeton Ocean Model (POM) was modified to simulate motion of a group of particles floating on the sea surface in the Gulf of Thailand. The particles in this group were set up so that they formed a circle. The radius reflected uncertainties of longitude and latitude directions while the centre was set at the point of interest. POM was incorporated with tidal forcing on the boundary, which included used current forcing on the inflow by wind velocities, high resolution and realistic ocean bottom topography, temperature and salinity. The model domain for the Gulf of Thailand extended from latitude 3°N-14°N and longitude 99°E-109°E. A horizontal grid resolution of 0.1 degree (approximately 11.1 km) was used in the model. Therefore, the grids consisted of 101×111 cells. Twenty one levels in sigma coordinate were used in vertical resolution. The model results were verified using TOPEX/Poseidon and JASON satellite data. The results of the simulation were used to gain a better understanding of the sea current and object movement patterns in the Gulf of Thailand.

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