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The gulf of
Thailand is the most important beach resource of Thailand. Normally the
large and heavy industrial factory grew up in the area around the
deep-sea ports. Rising of pollutants becomes serious in this region. To
understand the characteristic of the water body and the dispersion
process of the water quality is very interesting. A Multi-Layer Model of
Water quality is very interesting. A Multi-Layer Model of Water Quality
is one from many choices to describe the water quality characteristic.
This three-dimensional model for estuaries and coastal seas, developed
by Liu and Nelson(1977), is employed to express the salinity,
temperature and density distributions over the Gulf of Thailand. The
significant factors to perform the model are initial condition, boundary
condition and dispersion coefficients. The initial condition is applied
for saving computational time because of the dispersion coefficients.
The initial condition is applied for saving computational time because
of the dispersion process is slow process compare with the large area
such as the Gulf of Thailand. The boundary condition is performed to
control the water quality near the shoreline and the open sea. The
vertical distributions of sanitary, temperature and density are assigned
through this 3-D model. The last factors, which are dispersion
coefficients, are represented the dispersion characteristic in this
area. The results are calibrated with the observed data over the dry
period (March-April 1982-1993). At the first 3 layers the computed
salinity, temperature and density are conformed to the general pattern
of observed data especially to the boundary conditions. There are some
different for the deepest layer due to the other unknowns factor
influence to the flow.
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