Transforming hydrographs in the hillslope subsurface

[img]
Preview
PDF
Language: English
472Kb
Title:Transforming hydrographs in the hillslope subsurface
Creators:
Šanda, Martin; martin dot sanda at fsv dot cvut dot cz; Czech Technical University in Prague, Faculty of Civil Engineering, Thákurova 7,166 29, Prague 6, Czech Republic
Císlerová, Milena; Czech Technical University in Prague, Faculty of Civil Engineering, Thákurova 7,166 29, Prague 6, Czech Republic
Journal or Publication Title:
Journal of Hydrology and Hydromechanics, 57, 4, pp. 264-275
Uncontrolled Keywords:Experimental Catchment, Hydrological Monitoring, Subsurface Trench, Preferential Flow, Soil Moisture, Dystric Cambisol, Crystalline Granite Bedrock

Abstract

To reveal and evaluate the mechanism of transforming rainfall into runoff in the region, where the subsurface flow plays a dominant role in the runoff formation, a continuous hydrological and climatic data monitoring has been set-up in the experimental catchment Uhlířská (the Jizera Mountains, CR). The soil profile (Dystric Cambisol), formed on the weathered granite bedrock, is shallow and highly heterogeneous. Beside a standard catchment data observation a hillslope transect was instrumented to control the flow dynamics in the soil profile. From three soil horizons, the subsurface outflow is recorded in the subsurface trench. Adjacent to the trench the soil water suction is scanned by triplets of automatic tensiometers. Within the soil profile the unsaturated regime prevails, nevertheless the soil keeps almost saturated. Nearly simultaneous reaction of suction on a rainfall in all soil horizons implies a rapid vertical flow. Local preferential flow paths are conducting infiltrating water at significantly variable rates when saturation is reached. Groundwater table, soil moisture and subsurface runoff measured at the hillslope transect and the total outflow from the catchment, are correlated. The outflow from the catchment is dominantly controlled by soil moisture however the mechanism of its generation is not yet fully understood.

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

Title:Transforming hydrographs in the hillslope subsurface
Translated title:Transformace hydrogramu podpovrchového odtoku na svahu
Creators:
Šanda, Martin; martin dot sanda at fsv dot cvut dot cz; Czech Technical University in Prague, Faculty of Civil Engineering, Thákurova 7,166 29, Prague 6, Czech Republic
Císlerová, Milena; Czech Technical University in Prague, Faculty of Civil Engineering, Thákurova 7,166 29, Prague 6, Czech Republic
Uncontrolled Keywords:Experimental Catchment, Hydrological Monitoring, Subsurface Trench, Preferential Flow, Soil Moisture, Dystric Cambisol, Crystalline Granite Bedrock
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:57
Number:4
Page Range:pp. 264-275
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:6092
Item Type:Article
Deposited On:15 Jun 2010 17:02
Last Modified:15 Jun 2010 15:02

Citation

Šanda, Martin; Císlerová, Milena (2009) Transforming hydrographs in the hillslope subsurface. Journal of Hydrology and Hydromechanics, 57 (4). pp. 264-275. ISSN 0042-790X

Repository Staff Only: item control page