Water level change by tidal regulator in the Bang Nara River

• Main Authors: Patchanok Srivihok, Sutat Weesakul, Suphat Vongvisessomjai
• Format: Article
• Language: English
• Published: Prince of Songkla University 2003-11-01
• Series: Songklanakarin Journal of Science and Technology (SJST)
• Subjects: analytical model; salinity barrier; tidal regulator; tide reflection
• Online Access: http://www.sjst.psu.ac.th/journal/25-6-pdf/07water_BangNara.pdf

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.