Influence of Intertidal Flats on Tidal Asymmetry

• DOI: 10.2112/03-0089.1
• Publication Date: 2005-09-22T17:16:32Z
• Authors: André B. Fortunato; A. Oliveira
• Keywords: Dominance (genetics); Tidal irrigation; Tidal flat; Tidal current; Tidal river

The generation of tidal asymmetries in estuaries is analyzed by examining the differences celerity at high and low tide. An analytical expression for difference between ebb flood durations introduced applied to a cross section composed channel flanked flats. depends on cross-sectional average celerity, which two approximations are proposed verified with numerical model. Results confirm that flats enhance dominance, whereas large amplitudes promote dominance. Maximum dominance occurs or above mean water level, depending amplitude extent Finally, qualitative arguments indicate friction also enhances