Journal article

Hyporheic exchanges due to channel bed and width undulations

Neshat Movahedi, Amir Ahmad Dehghani, Christian Schmidt, Nico Trauth, Gregory Brian Pasternack, Michael J Stewardson, Mehdi Meftah Halghi



Riffle-pool sequences are fundamental, ubiquitous morphological features of alluvial rivers that are thoroughly studied in general and commonly incorporated into river restoration projects. Most previous investigations on the effect of riffle-pool sequences on hyporheic exchanges focused on solely bed undulation, because that is widely thought to be the defining feature of riffle-pool sequences. However, riffle- pool sequences also have significant width undulations that are vital to riffle-pool sequences morphodynamics, yet relatively few studies exist on the effect of such undulations on hyporheic exchanges. Thus, in this study based on laboratory experiments and numerical simulations, we ..

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Awarded by Australian Research Council

Awarded by USDA National Institute of Food and Agriculture, Hatch project

Funding Acknowledgements

The authors would like to acknowledge Department of Infrastructure Engineering at The University of Melbourne for providing the facility as sabbatical for second author and Department of Hydrogeology of Helmholtz Center for Environmental Research -UFZ in Leipzig, especially Prof. Jan H. Fleckenstein for hosting first author as guest researcher to doing the numerical simulations in this center. The financial support of this research was provided by Ministry of Science, Research and Technology of Iran. The contribution of Michael Stewardson to this research was supported by Australian Research Council Grant DP130103619. The contribution of Gregory Pasternack to this research was supported by the USDA National Institute of Food and Agriculture, Hatch project number CA-D-LAW-7034-H.