Articles | Volume 20, issue 7
Hydrol. Earth Syst. Sci., 20, 2899–2912, 2016

Special issue: Geomorphometry: advances in technologies and methods for Earth...

Hydrol. Earth Syst. Sci., 20, 2899–2912, 2016

Research article 19 Jul 2016

Research article | 19 Jul 2016

On the propagation of diel signals in river networks using analytic solutions of flow equations

Morgan Fonley et al.

Related subject area

Subject: Catchment hydrology | Techniques and Approaches: Mathematical applications
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Cited articles

Arnell, N.: The effect of climate change on hydrological regimes in Europe: a continental perspective, Global Environ. Chang., 9, 5–23, 1998.
Bond, B., Jones, J., Moore, G., Phillips, N., Post, D., and McDonnell, J.: The zone of vegetation influence on baseflow revealed by diel patterns of streamflow and vegetation water use in a headwater basin, Hydrol. Process., 16, 1671–1677, 2002.
Burn, D., Buttle, J., Caissie, D., MacCulloch, G., Spence, C., and Stahl, K.: The Processes, Patterns and Impacts of Low Flows Across Canada, Canad. Water Resour. J., 33 107–124, 2008.
Burt, T. P.: Diurnal variations in stream discharge and throughflow during a period of low flow, J. Hydrol., 41, 291–301, 1979.
Graham, C., Barnard, H., Kavanagh, K., and McNamara, J.: Catchment scale controls the temporal connection of transpiration and diel fluctuations in streamflow, Hydrol. Process., 27, 2541–2556, 2013.
Short summary
We design and implement a theoretical experiment to show that, under low-flow conditions, observed streamflow discrepancies between early and late summer can be attributed to different flow velocities in the river network. By developing an analytic solution to represent flow along a given river network, we emphasize the dependence of streamflow amplitude and time delay on the geomorphology of the network. We also simulate using a realistic river network to highlight the effects of scale.