Record Details
Hillslope run-off thresholds with shrink-swell clay soils
ScholarsArchive at Oregon State University
| Field | Value |
|---|---|
| Title | Hillslope run-off thresholds with shrink-swell clay soils |
| Names |
Stewart, Ryan D.
(creator) Abou Najm, Majdi R. (creator) Rupp, David E. (creator) Lane, John W. (creator) Uribe, Hamil C. (creator) Luis Arumí, José (creator) Selker, John S. (creator) |
| Date Issued | 2015-02-15 (iso8601) |
| Note | To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. This is the publisher’s final pdf. The published article is copyrighted by John Wiley & Sons Ltd. and can be found at: http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291099-1085. |
| Abstract | Irrigation experiments on 12 instrumented field plots were used to assess the impact of dynamic soil crack networks on infiltration and run-off. During applications of intensity similar to a heavy rainstorm, water was seen being preferentially delivered within the soil profile. However, run-off was not observed until soil water content of the profile reached field capacity, and the apertures of surface-connected cracks had closed > 60%. Electrical resistivity measurements suggested that subsurface cracks persisted and enhanced lateral transport, even in wet conditions. Likewise, single-ring infiltration measurements taken before and after irrigation indicated that infiltration remained an important component of the water budget at high soil water content values, despite apparent surface sealing. Overall, although the wetting and sealing of the soil profile showed considerable complexity, an emergent property at the hillslope scale was observed: all of the plots demonstrated a strikingly similar threshold run-off response to the cumulative precipitation amount. |
| Genre | Article |
| Topic | hillslope |
| Identifier | Stewart R. D., Abou Najm M. R., Rupp D. E., Lane J. W., Uribe H. C., Arumí J. L. and Selker J. S. (2015). Hillslope run-off thresholds with shrink–swell clay soils. Hydrological Processes, 29(4), 557-571. doi:10.1002/hyp.10165 |
