Estimation of macropore flow characteristics in stony soils of a small mountain catchment

Hlaváčiková, Hana; Holko, Ladislav; Danko, Michal; Novák, Viliam

doi:10.1016/j.jhydrol.2019.05.009

Cited by 31 publications

(21 citation statements)

References 74 publications

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“…Previous studies in the Jalovecký Creek catchment which is representative for the hydrological cycle of the highest part of the Carpathian Mountains, documented the dominant role of the pre-event water, fast runoff response to rainfall and pointed at the importance of the stony soils in catchment runoff generation (e.g., Hlaváčiková et al, 2015Hlaváčiková et al, , 2018Hlaváčiková et al, , 2019Holko and Lepistő, 1997;Holko et al 2011Holko et al , 2018Kostka, 2009).This work indicated that simulation of the lateral subsurface flow in different parts of the catchment and comparison of simulated lateral subsurface flow hydrographs with catchment runoff hydrograph could improve the understanding of the contribution of different parts of the catchment to runoff formation. Comparison of Table 4.…”

Section: Discussionmentioning

confidence: 99%

The role of stony soils in hillslope and catchment runoff formation

Mujtaba

Hlaváčiková

Danko

et al. 2020

Journal of Hydrology and Hydromechanics

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AbstractThe role of stony soils in runoff response of mountain catchments is rarely studied. We have compared simulated response of stony soils with measured catchment runoff for events caused by rains of small and high intensities in the mountain catchment of the Jalovecký Creek, Slovakia. The soil water response was simulated for three sites with stoniness 10–65% using the Hydrus-2D single porosity model. Soil hydraulic parameters employed in the modelling, i. e. the saturated hydraulic conductivity and parameters of the soil water retention curves, were obtained by two approaches, namely by the Representative Elementary Volume approach (REVa) and by the inverse modelling with Hydrus-1D model (IMa). The soil water outflow hydrographs simulated by Hydrus-2D were compared to catchment runoff hydrographs by analysing their skewness and peak times. Measured catchment runoff hydrographs were similar to simulated soil water outflow hydrographs for about a half of rainfall events. Interestingly, most of them were caused by rainfalls with small intensity (below 2.5 mm/10 min). The REV approach to derive soil hydraulic parameters for soil water outflow modelling provided more realistic shapes of soil water outflow hydrographs and peak times than the IMa approach.

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Section: Discussionmentioning

confidence: 99%

The role of stony soils in hillslope and catchment runoff formation

Mujtaba

Hlaváčiková

Danko

et al. 2020

Journal of Hydrology and Hydromechanics

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“…The principal fact is that in some cases, particularly, for stony soils (composed of fractions of rock fragments and fine soil with different hydrophysical characteristics), the infiltration process of rainfall at a lower rate is weaker than infiltration capacity acting in an opposite way. Thus, the highest vertical outflow occurs from the bottom of the profile in soils (in contrast with the case without rock fragments) under the ponding infiltration condition [21].…”

Section: Existing Problems and Basic Principles Of The Conceptmentioning

confidence: 89%

Global and Regional Aspects for Genesis of Catastrophic Floods: The Problems of Forecasting and Estimation for Mass and Water Balance (Surface Water and Groundwater Contribution)

Трифонова¹,

Trifonov²,

Bukharov³

et al. 2020

Flood Impact Mitigation and Resilience Enhancement

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Traditionally torrential rains are considered to be the main factor of flood emergence. But with some examples of disastrous floods in absolutely different parts of the world, the rough estimation of the water balance results in the necessity to suggest a correct alternative hypothesis. Our simplest model (taking into account precipitation, evaporation, and soil permeability) clearly points out the significant discrepancy in several events between potentially accumulated and observed water masses. This observation puts forward the idea that precipitation is necessary, but it is not often a sufficient factor for disastrous flood emergence and for the water flow budget. Thus, another available water source, i.e., groundwater, should not be ignored. We consider the reasons and conditions for such phenomena. In this chapter, we will focus only on the causes and forecast of dangerous dynamic phenomena in rock masses. Of particular interest here are water flows through various granite massifs and geological rocks of magmatic origin using nonlinear dynamics approaches.

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“…The degree of preferential flow directly affects the infiltration capacity of water, and presents the more complex and chaotic redistribution pattern of water in soil [14,17,19]. Topographic factors can affect the infiltration process of soil water by influencing the physical and chemical properties of soil, soil thickness, and gravel content amongst others [23,24,26,34]. Even small topographic changes can cause drastic changes in soil conditions over a short distance.…”

Section: Degree Of Preferential Flowmentioning

confidence: 99%

“…However, results by others have not been consistent due to difficult sampling conditions, a variable spatial distribution, and limited field measurements [33]. Moreover, relatively few experimental studies have focused on the identification and quantification of preferential flow in soil with rocky fragments, especially on a hillslope or mountain scale [17,[34][35][36][37][38][39].Rocky mountains are widely distributed in northern China and cover a total area of~754,000 km 2 , which includes the Haihe River basin, Huaihe River basin, and part of the Yellow River basin. In the present study, the rocky Taihang Mountains-where the Jing-Jin-Ji Economic District (one of the most developed metropolitan regions in China) is located-was chosen as a representative study region.…”

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Spatial Variability of Preferential Flow and Infiltration Redistribution along a Rocky-Mountain Hillslope, Northern China

Zhao

Jia

Gong

et al. 2020

Water

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Rock fragments in soil strongly increase the complexity of hydrological processes. Spatial variability of preferential flow and infiltration characteristics, especially along a rocky-mountain hillslope are poorly understood. In this study, five rainfall-dye tracer experiments were performed in the rocky Taihang Mountains, northern China, to investigate the spatial variability of preferential flow and infiltration redistribution on different hillslope positions. Tracers were used to distinguish macropore flow and actual water flow patterns, and preferential flow indices and spatial non-uniformity of the infiltration redistribution were calculated using image analysis. Results showed increasing trends in the dye coverage, maximum infiltration depth, and steady infiltration rate with increased hillslope position, with a preferential flow fraction of 0.10, 0.11, 0.15, 0.29, and 0.26 for the bottom-, down-, mid-, upper-, and top-slope positions, respectively. With increased hillslope position, the spatial non-uniformity of the infiltration redistribution gradually increased in orthogonal and parallel directions to the stained section, and was supported by the fractal dimensions. Positive (gravel mass ratio, saturated water content, altitude, hydraulic conductivity and roots) and negative (bulk density and clay content) impacts on preferential flow and infiltration redistribution were quantitatively emphasized. The characteristic and mechanism of infiltration process were further identified along a rocky-mountain hillslope.Many factors contribute to the formation of preferential flow, thus leading to various patterns of manifestation. The main and current researches are related to macropore flow and unstable finger flow, with other preferential flow patterns also given attention due to their accompanying hydrological and environmental geological problems [11,12]. The corresponding studies on preferential flow in the vadose zone can be traced back to 1864, while Darcy's law, Richard's equation, etc. have dominated subsequent theories of seepage and infiltration. It was not until the 1870s that the movement of heterogeneous water in macropores challenged the traditional homogeneous theory [13]. Beven et al. [4] discussed the relationship between soil pores and preferential flow, and initiated the subsequent preferential flow research boom. Much research has been undertaken regarding the basic theory of flow development, morphological characteristics, influencing factors, and model simulation of priority flow [13][14][15][16]. Peters [7] studied the hillslope hydrological process of subsurface flow in Shield forest basin using a hydrological test and geochemical tracer method, and found that most water fluxes in the forest soil were priority flow that did not comply with Darcy's law. Some scholars believe that most of the priority channels would not be activated until the soil reaches saturation [9,17,18]. Alaoui [19] found that large pores could transport approximately 74-100% of soil water with 0.23-2% of the total so...

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Estimation of macropore flow characteristics in stony soils of a small mountain catchment

Cited by 31 publications

References 74 publications

The role of stony soils in hillslope and catchment runoff formation

The role of stony soils in hillslope and catchment runoff formation

Global and Regional Aspects for Genesis of Catastrophic Floods: The Problems of Forecasting and Estimation for Mass and Water Balance (Surface Water and Groundwater Contribution)

Spatial Variability of Preferential Flow and Infiltration Redistribution along a Rocky-Mountain Hillslope, Northern China

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