Earth Surface Dynamics
Earth Surface Dynamics
ESurf
Articles | Volume 13, issue 6
Articles | Volume 13, issue 6
https://doi.org/10.5194/esurf-13-1093-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/esurf-13-1093-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 13, issue 6
Research article
 | 
03 Nov 2025
Research article |  | 03 Nov 2025

Hydrodynamic and morphodynamic patterns on a mid-channel intertidal bar in an estuary

Marco Schrijver, Maarten van der Vegt, Gerben Ruessink, and Maarten G. Kleinhans

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Allen, R. M., Lacy, J. R., Stacey, M. T., and Variano, E. A.: Seasonal, spring neap, and tidal variation in cohesive sediment transport parameters in estuarine shallows, J. Geophys. Res.-Oceans, 124, 7265–7284, https://doi.org/10.1029/2018JC014825, 2019. a
Baar, A. W., Boechat Albernaz, M., van Dijk, W. M., and Kleinhans, M. G.: Critical dependence of morphodynamic models of fluvial and tidal systems on empirical downslope sediment transport, Nat. Commun., 10, https://doi.org/10.1038/s41467-019-12753-x, 2019. a
Barbier, E. B., Hacker, S. D., Kennedy, C., Koch, E. W., Stier, A. C., and Silliman, B. R.: The value of estuarine and coastal ecosystem services, Ecol. Monogr., 81, 169–193, https://doi.org/10.1890/10-1510.1, 2011. a
Bearman, J. A., Friedrichs, C. T., Jaffe, B. E., and Foxgrover, A. C.: Spatial trends in tidal flat shape and associated environmental parameters in South San Francisco Bay, J. Coast. Res., 26, 342–349, 2010. a
Benninghoff, M. and Winter, C.: Decadal evolution of tidal flats and channels in the Outer Weser estuary, Germany, Ocean Dynam., 68, 1181–1190, https://doi.org/10.1007/s10236-018-1184-2, 2018. a
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To gain insight into the sediment transport onto a mid-channel bar in an estuary, we measured current velocities on and along the tidal flat during six months. Our analysis shows that intertidal currents have a more pronounced three-dimensional pattern than those on shore-connected tidal flats. This has consequences for sediment transport and morphodynamics. Existing models for tidal flats underestimate flow velocities and sediment dynamics on mid-channel bars.
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