Erosion, Sedimentation, and Geomorphology
Experiments on headcut growth and migration in concentrated flows typical of upland areas
Article first published online: 9 JUL 2010
Copyright 2000 by the American Geophysical Union.
Water Resources Research
Volume 36, Issue 7, pages 1911–1922, July 2000
How to Cite
2000), Experiments on headcut growth and migration in concentrated flows typical of upland areas, Water Resour. Res., 36(7), 1911–1922, doi:10.1029/2000WR900067., , , and (
- Issue published online: 9 JUL 2010
- Article first published online: 9 JUL 2010
- Manuscript Accepted: 10 MAR 2000
- Manuscript Received: 17 MAY 1999
Experiments were conducted to examine soil erosion by headcut development and migration in concentrated flows typical of upland areas. In a laboratory channel, packed sandy loam to sandy clay loam soil beds with preformed headcuts were subjected to simulated rain followed by overland flow. The rainfall produced a well-developed surface seal that minimized surface soil detachment. During overland flow, soil erosion occurred exclusively at the headcut, and after a short period of time, a steady state condition was reached where the headcut migrated at a constant rate, the scour hole morphology remained unchanged, and sediment yield remained constant. A fourfold increase in flow discharge resulted in larger scour holes, yet aspect ratio was conserved. A sediment bed was deposited downstream of the migrating headcut, and its slope depended weakly on flow discharge.