Suphat Vongvisessomjai, Sutat Weesakul, and Patchanok Srivihok

pp. 757 - 771

Abstract

The interaction between tide and salinity barrier can be investigated using both analytical model
and numerical model when the structure is located at some distance (62 km) from the river mouth of the
Bang Pakong River as shown by Vongvisessomjai and Srivihok (2003). However, when the structure is located
near the river mouth of the Bang Nara River, the numerical model yields negligible reflection of tide and
underestimates observed water levels while the analytical model provides a good prediction. It is found from
this study that semi-diurnal tides M₂ and S₂ are strongly affected by construction of tidal regulator having
amplification factor of more than 100 percent while diurnal tides are less sensitive to the construction having
amplification factor of about 30 percent for K₁ and about zero percent for O₁
.