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Growing forced bars determine non-ideal estuary planform

Growing forced bars determine non-ideal estuary planform

This is a Preprint and has not been peer reviewed. The published version of this Preprint is available: https://doi.org/10.1029/2018JF004718. This is version 3 of this Preprint.

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Authors

Jasper R.F.W. Leuven, Lisanne Braat , Wout M. van Dijk , Tjalling de Haas, Erik van Onselen, Ger...  more

Abstract

The planform of estuaries is often described with an ideal shape, which exponentially
converges in landward direction. We show how growing topographically forced nonmigratory (i.e., anchored) bars determine the large-scale estuary planform, which explains the deviations observed in the planform of natural estuaries filled with bars compared to the ideal planform. Experiments were conducted in a 20-m long, 3-m-wide tilting flume, the Metronome. From a narrow, converging channel a self-formed
estuary developed characterized by multiple channels, braided bars, a meandering ebb channel, and an ebb delta. Bars hardly migrated due to the alte...  more

DOI

https://doi.org/10.31223/osf.io/hj27m

Subjects

Earth Sciences, Geomorphology, Physical Sciences and Mathematics

Keywords

Estuaries, bar pattern, channel configuration, channel dynamics, long-term evolution, scale-experiment

Dates

Published: 2018-05-09 12:34

Last Updated: 2018-11-21 21:29

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License

CC BY Attribution 4.0 International