Articles | Volume 7, issue 2
Research article
 | Highlight paper
01 Jul 2019
Research article | Highlight paper |  | 01 Jul 2019

Alluvial channel response to environmental perturbations: fill-terrace formation and sediment-signal disruption

Stefanie Tofelde, Sara Savi, Andrew D. Wickert, Aaron Bufe, and Taylor F. Schildgen

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Cited articles

Allen, P. A.: From landscapes into geological history, Nature, 451, 274–276,, 2008. 
Allen, P. A.: Sediment routing systems: The fate of sediment from source to sink, Cambridge University Press, Cambridge, UK and New York, USA,, 2017. 
Allen, P. A. and Densmore, A. L.: Sediment flux from an uplifting fault block, Basin Res., 12, 367–380,, 2000. 
Alloway, B. V., Lowe, D. J., Barrell, D. J. A., Newnham, R. M., Almond, P. C., Augustinus, P. C., Bertler, N. A. N., Carter, L., Litchfield, N. J., Mcglone, M. S., Shulmeister, J., Vandergoes, M. J., Williams, P. W., and Members, N.-I.: Towards a climate event stratigraphy for New Zealand over the past 30 000 years (NZ-INTIMATE project), J. Quaternary Sci., 22, 9–35,, 2007. 
Armitage, J. J., Duller, R. A., Whittaker, A. C., and Allen, P. A.: Transformation of tectonic and climatic signals from source to sedimentary archive, Nat. Geosci., 4, 231–235, 2011. 
Short summary
We performed seven physical experiments to explore terrace formation and sediment export from a braided alluvial river system that is perturbed by changes in water discharge, sediment supply, or base level. Each perturbation differently affects (1) the geometry of terraces and channels, (2) the timing of terrace formation, and (3) the transient response of sediment discharge. Our findings provide guidelines for interpreting fill terraces and sediment export from fluvial systems.