On the role of rock fragments and initial soil water content in the potential subsurface runoff formation

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Title:On the role of rock fragments and initial soil water content in the potential subsurface runoff formation
Creators:
Hlaváčiková, Hana; hlavacikova at uh dot savba dot sk; Institute of Hydrology, Slovak Academy of Sciences, Račianska 75, 83102 Bratislava, Slovakia.
Novák, Viliam; Institute of Hydrology, Slovak Academy of Sciences, Račianska 75, 83102 Bratislava, Slovakia.
Holko, Ladislav; Institute of Hydrology, Slovak Academy of Sciences, Račianska 75, 83102 Bratislava, Slovakia.
Journal or Publication Title:
Journal of Hydrology and Hydromechanics, 63, 1, pp. 71-81
Uncontrolled Keywords:stony soils, infiltration, stoniness, initial soil water content, mathematical modeling

Abstract

Stony soils are composed of fractions (rock fragments and fine soil) with different hydrophysical characteristics. Although they are abundant in many catchments, their properties are still not well understood. This article presents basic characteristics (texture, stoniness, saturated hydraulic conductivity, and soil water retention) of stony soils from a mountain catchment located in the highest part of the Carpathian Mountains and summarizes results of water flow modeling through a hypothetical stony soil profile. Numerical simulations indicate the highest vertical outflow from the bottom of the profile in soils without rock fragments under ponding infiltration condition. Simulation of a more realistic case in a mountain catchment, i.e. infiltration of intensive rainfall, shows that when rainfall intensity is lower than the saturated hydraulic conductivity of the stony soil, the highest outflow is predicted in a soil with the highest stoniness and high initial water content of soil matrix. Relatively low available retention capacity in a stony soil profile and consequently higher unsaturated hydraulic conductivity leads to faster movement of the infiltration front during rainfall.

Official URL: http://147.213.145.2/vc/vc1.asp

Title:On the role of rock fragments and initial soil water content in the potential subsurface runoff formation
Translated title:On the role of rock fragments and initial soil water content in the potential subsurface runoff formation
Creators:
Hlaváčiková, Hana; hlavacikova at uh dot savba dot sk; Institute of Hydrology, Slovak Academy of Sciences, Račianska 75, 83102 Bratislava, Slovakia.
Novák, Viliam; Institute of Hydrology, Slovak Academy of Sciences, Račianska 75, 83102 Bratislava, Slovakia.
Holko, Ladislav; Institute of Hydrology, Slovak Academy of Sciences, Račianska 75, 83102 Bratislava, Slovakia.
Uncontrolled Keywords:stony soils, infiltration, stoniness, initial soil water content, mathematical modeling
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Mathematics, Physics and Earth Sciences > Institute of Hydrodynamics > Journal of Hydrology and Hydromechanics
Journal or Publication Title:Journal of Hydrology and Hydromechanics
Volume:63
Number:1
Page Range:pp. 71-81
ISSN:0042-790X
Publisher:Institute of Hydrology of the Slovak Academy of Sciences and the Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic
Related URLs:
URLURL Type
http://avi.lib.cas.cz/node/55Publisher
ID Code:8413
Item Type:Article
Deposited On:13 May 2015 19:23
Last Modified:13 May 2015 17:23

Citation

Hlaváčiková, Hana; Novák, Viliam; Holko, Ladislav (2015) On the role of rock fragments and initial soil water content in the potential subsurface runoff formation. Journal of Hydrology and Hydromechanics, 63 (1). pp. 71-81. ISSN 0042-790X

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