Vectors of subsurface stormflow in a layered hillslope during runoff initiation
نویسندگان
چکیده
منابع مشابه
Vectors of subsurface stormflow in a layered hillslope during runoff initiation
The focus is the experimental assessment of insitu flow vectors in a hillslope soil. We selected a 100 m2 trenched hillslope study site. During prescribed sprinkling an obliquely installed TDR wave-guide provides for the velocity of the wetting front in its direction. A triplet of wave-guides mounted along the sides of an hypothetical tetrahedron, with its peak pointing down, produces a three-d...
متن کاملFormation of runoff at the hillslope scale during intense precipitation
On 60 m2 hillslope plots, at 18 mainly grassland locations in Switzerland rain was applied at rates of 50– 100 mm/h for between 3 and 6 h. The generated flows were measured, including overland flow, near surface and subsurface flow 0.5–1.3 m below the surface. At some locations less than 2% of the rain flowed down the slope either on or below the surface, whereas at some others more than 90% of...
متن کاملAssessment of Critical Condition for Rill Initiation on Degraded Hillslope
Generally, the evaluation and assessment critical condition of rill formation are useful for a better understanding of soil erosion processes. The inherence characteristics of soils, which have much dynamic variations on the hill-slopes and are affected by rill formation, are the soil critical shear stress and soil erodibility factors. This study aims to assess experimental rill incision thre...
متن کاملTopographic controls on the chemistry of subsurface stormflow
Models are needed that describe how topography and other watershed characteristics affect the chemical composition of runoff waters, yet little spatially distributed data exist to develop such models. A topographically driven flushing mechanism for nitrate (NO3 ) and dissolved organic carbon has been described in recent literature; however, this mechanism has not yet been thoroughly tested. A 2...
متن کاملDelineating runoff processes and critical runoff source areas in a pasture hillslope of the Ozark Highlands
The identification of runoff contributing areas would provide the ideal focal points for water quality monitoring and Best Management Practice (BMP) implementation. The objective of this study was to use a field-scale approach to delineate critical runoff source areas and to determine the runoff mechanisms in a pasture hillslope of the Ozark Highlands in the USA. Three adjacent hillslope plots ...
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ژورنال
عنوان ژورنال: Hydrology and Earth System Sciences
سال: 2006
ISSN: 1607-7938
DOI: 10.5194/hess-10-309-2006