Abstract
Aiming at better understanding the processes involved in perched water tables onset and in their development, the case of a soil slope characterised by gradually decreasing hydraulic conductivity at saturation with depth was numerically investigated. Different anisotropy factors and steepness values were accounted for. The problem was led to a dimensionless form on the basis of the Buckingham π-theorem. Coherently with a theoretical solution of the 2D sloping case, the simulations evidenced (a) non-monotonic transverse profiles of the pressure head within the perched water, (b) slightly lower infiltration thresholds for perched water onset and for soil waterlogging, with respect to the 1D case. If the slope is long enough, an almost uniform flux can be observed in a branch of its central part.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsReferences
Barontini S, Ranzi R (2010) Su alcune caratteristiche delle falde pensili in suoli gradualmente vari. In: Proceedings of 32nd congress of hydraulics and hydraulic structures, Palermo, 14–17 Sept 2010, pp 10
Barontini S, Clerici A, Ranzi R, Bacchi B (2005) Saturated hydraulic conductivity and water retention relationships for Alpine mountain soils. In: De Jong C, Collins D, Ranzi R (eds) Climate and hydrology of mountain areas. Wiley, Chichester, pp 101–122
Barontini S, Ranzi R, Bacchi B (2007) Water dynamics in a gradually non-homogeneous soil described by the linearized Richards equation. Water Resour Res 43. ISSN: 0043-1397
Barontini S, Peli M, Bakker M, Bogaard TA, Ranzi R (2011) Perched waters in 1D and sloping 2D gradually layered soils. First numerical results. Submitted to the XXth Congress of AIMETA, Bologna
Beven KJ (1984) Infiltration into a class of vertically non-uniform soils. Hydrol Sci J – Journal des Science Hydrologique Bulletin 24:43–69
Corey GL, Corey AT, Brooks RH (1965) Similitude for non-steady drainage of partially saturated soils. Hydrology papers. Colorado State University, Fort Collins, 39p
Kirkby M (1969) Infiltration, throughflow and overland flow. In: Chorley R (ed) Water, Earth and man. Taylor & Francis, Kirkby, pp 215–227
Leverett MC, Lewis WB, True ME (1942) Dimensional-model studies of oil-field behavior. Trans Am Inst Min Met Eng Petroleum Div 146:175–193
Simunek J, Sejna M, van Genuchten MT (1999) The Hydrus-2D software package for simulating two-dimensional movement of water, heat, and multiple solutes in variably saturated media. Version 2.0. IGWMC – TPS – 53. International Ground Water Modeling Center, Colorado School of Mines. Golden, 251p
Van Asch Th WJ, Van Beek LPH, Bogaard TA (2009) The diversity in hydrological triggering systems of landslides. In: Picarelli L, Tommasi P, Urciuoli G, Versace P (eds) Rainfall-induced landslides. Mechanisms, monitoring techniques and nowcasting models for early warning systems. Proceedings of the 1st Italian workshop on landslides, vol 1, Napoli
Zaslavsky D (1964) Theory of unsaturated flow into a non-uniform soil profile. Soil Sci 97(6):400–410
Acknowledgments
The work was partly founded in the framework of European FP7 Project KULTURisk (Grant Agreement n.265280).
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2013 Springer-Verlag Berlin Heidelberg
About this chapter
Cite this chapter
Barontini, S., Peli, M., Bogaard, T.A., Ranzi, R. (2013). Dimensionless Numerical Approach to Perched Waters in 2D Gradually Layered Soils. In: Margottini, C., Canuti, P., Sassa, K. (eds) Landslide Science and Practice. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-31310-3_20
Download citation
DOI: https://doi.org/10.1007/978-3-642-31310-3_20
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-31309-7
Online ISBN: 978-3-642-31310-3
eBook Packages: Earth and Environmental ScienceEarth and Environmental Science (R0)