Cape Fear: monitoring basic hydrological processes in an outdoor hillslope plot
- 124 Downloads
Cape Fear is an outdoor 7 × 7 m2 hillslope laboratory located at the University of Tuscia, Viterbo, Italy, and is equipped with real-time monitoring sensors used to analyse runoff generation. In this paper, hydrological phenomena that occurred during Cape Fear’s first 2 years of operation are reported to provide insight into the basic dynamics underlying the hydrological response at the hillslope scale. Based on our findings, surface and subsurface runoff are likely driven by rainfall-threshold phenomena, and evapotranspiration phenomena account for more than 70% of rainfall water input. Future studies will investigate the threshold relationship between rainfall and runoff.
KeywordsCape Fear Experimental plot Runoff Soil water content Hydrological balance
The University of Tuscia technicians Paolo Ciorba, Giuliano Cipollari, Roberto Rapiti, and Massimo Edoardo Vollaro are acknowledged for their roles in creating Cape Fear and continuous assistance in monitoring the hillslope plot. Dr. Tauro acknowledges support from the UNESCO Chair in Water Resources Management and Culture. The authors thank Dr. Salvatore Grimaldi for insightful discussion of the results.
- Beven, K. (2001). Rainfall-runoff modelling: the primer. West Sussex: Wiley.Google Scholar
- Gevaert, A. I., Teuling, A. J., Uijlenhoet, R., DeLong, S. B., Huxman, T. E., Pangle, L. A., Breshears, D. D., Chorover, J., Pelletier, J. D., Saleska, S. R., Zeng, X., & Troch, P. A. (2014). Hillslope-scale experiment demonstrates the role of convergence during two-step saturation. Hydrology and Earth System Sciences, 18(9), 3681–3692. doi: 10.5194/hess-18-3681-2014.CrossRefGoogle Scholar
- Grimaldi, S., Petroselli, A., Baldini, L., & Gorgucci, E. (2017). Description and preliminary results of a 100 square meter rain gauge. Journal of Hydrology. doi: 10.1016/j.jhydrol.2015.09.076.
- Niu, G. Y., Pasetto, D., Scudeler, C., Paniconi, C., Putti, M., Troch, P. A., DeLong, S. B., Dontsova, K., Pangle, L., Breshears, D. D., Chorover, J., Huxman, T. E., Pelletier, J., Saleska, S. R., & Zeng, X. (2014). Incipient subsurface heterogeneity and its effect on overland flow generation—insight from a modeling study of the first experiment at the biosphere 2 landscape evolution observatory. Hydrology and Earth System Sciences, 18(5), 1873–1883. doi: 10.5194/hess-18-1873-2014.CrossRefGoogle Scholar
- Robinson, D. A., Campbell, C. S., Hopmans, J. W., Hornbuckle, B. K., Jones, S. B., Knight, R., Ogden, F., Selker, J., & Wendroth, O. (2008). Soil moisture measurement for ecological and hydrological watershed-scale observatories: a review. Vadose Zone Journal, 7(1), 358–389. doi: 10.2136/vzj2007.0143.CrossRefGoogle Scholar
- Templeton, R. C., Vivoni, E. R., Méndez-Barroso, L. A., Pierini, N. A., Anderson, C. A., Rango, A., Laliberte, A. S., & Scott, R. L. (2014). High-resolution characterization of a semiarid watershed: implications on evapotranspiration estimates. Journal of Hydrology, 509, 306–319.CrossRefGoogle Scholar
- Troch, P. A., Carrillo, G. A., Heidbüchel, I., Rajagopal, S., Switanek, M., Volkmann, T. H. M., & Yaeger, M. (2009). Dealing with landscape heterogeneity in watershed hydrology: a review of recent progress toward new hydrological theory. Geography Compass, 3(1), 375–392. doi: 10.1111/j.1749-8198.2008.00186.x.CrossRefGoogle Scholar