Kinematic dispersion in stream networks 1. Coupling hydraulic and network geometry
Article first published online: 21 NOV 2002
Copyright 2002 by the American Geophysical Union.
Water Resources Research
Volume 38, Issue 11, pages 26-1–26-14, November 2002
How to Cite
Kinematic dispersion in stream networks, 1, Coupling hydraulic and network geometry, Water Resour. Res., 38(11), 1244, doi:10.1029/2001WR000695, 2002., and ,
- Issue published online: 21 NOV 2002
- Article first published online: 21 NOV 2002
- Manuscript Accepted: 16 APR 2002
- Manuscript Revised: 27 MAR 2002
- Manuscript Received: 30 MAY 2001
- geomorphologic instantaneous unit hydrograph;
- instantaneous response function;
- geomorphologic dispersion
 We investigate the coupling of river network structure and hydraulic geometry thereby relaxing the assumption of spatially invariant celerities and hydrodynamic dispersion coefficients. The presence of spatially varying celerities induces a dispersion effect, referred to as kinematic dispersion, on the network travel time distribution. Its contribution to the total dispersion is comparable to that due to the heterogeneity of path lengths, that is, geomorphologic dispersion, and significantly larger than the hydrodynamic dispersion. If this contribution is ignored, the hydrograph shows a higher peak flow, a shorter time to peak, and shorter duration.