Tidal Response to Sea-Level Rise in Different Types of Estuaries: The Importance of Length, Bathymetry, and Geometry
Virginia Institute of Marine Science
Geophysical Research Letters
Tidal response to sea-level rise (SLR) varies in different coastal systems. To provide a generic pattern of tidal response to SLR, a systematic investigation was conducted using numerical techniques applied to idealized and realistic estuaries, with model results cross-checked by analytical solutions. Our results reveal that the response of tidal range to SLR is nonlinear, spatially heterogeneous, and highly affected by the length and bathymetry of an estuary and weakly affected by the estuary convergence with an exception of strong convergence. Contrary to the common assumption that SLR leads to a weakened bottom friction, resulting in increased tidal amplitude, we demonstrate that tidal range is likely to decrease in short estuaries and in estuaries with a narrow channel and large low-lying shallow areas.
The data sets used in this study are available at http://doi.org/10.5281/zenodo.1008586
Du, JB; Shen, Jian; Zhang, Yinglong J.; Ye, Fei; Liu, Z; Wang, ZG; Wang, YP; Yu, X; Sisson, M; and Wang, Harry V., Tidal Response to Sea-Level Rise in Different Types of Estuaries: The Importance of Length, Bathymetry, and Geometry (2018). Geophysical Research Letters, 45(1), 227-235.