Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/33944
- Multi-parameter fingerprinting of sediment deposition in a small gullied catchment in SE Australia
Krause, A. K.;
Franks, S. W.;
Kalma, J. D.;
Loughran, R. J.;
Rowan, J. S.
- The University of Newcastle. Faculty of Science & Information Technology, School of Mathematical and Physical Sciences
- The determination of relative contributions of potential sediment sources is an important step in the development of management strategies to combat soil erosion. In a 1.2 km² gullied catchment in southeastern New South Wales, multi-parameter fingerprinting of sediment deposited in successive downstream pools has identified gully walls as the dominant sediment source when the grazed pasture surface was the only other potential source. The median fractional contributions remained relatively steady in the successive downstream pools, with the gully walls responsible for between 90% and 98% of the pool sediment. This result was achieved despite the ratio of the source areas varying considerably between successive nested subareas. Reliability bounds on the predictions, accounting for limited sampling of sources, were well constrained and varied between 5.4% and 13.8%. Downstream of an unsealed road crossing, sediment from the road source dominated the pool sediments such that contributions from the pasture surface and gully sources could not be determined.
- Catena Vol. 53, Issue 4, p. 327-348
- Publisher Link
- Elsevier Science BV
- Resource Type
- journal article