No (235)
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235
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Application of SAC-SMA and HSPF hydrological models - Lenora basin case study
Košková, Romana; Buchtele, Josef; Vološ, B.; Fořtová, Magda
2004 - English
Research aim is the application of two different rainfall-runoff models to a specific basin and comparison of the results of rainfall-runoff simulations obtained both with and without respect to data spatial variability Cílem výzkumu byla aplikace dvou rozdílných srážko-odtokových modelů v konkrétním povodí a porovnání výsledků srážko-odtokových simulací s ohledem na prostorovou variabilitu dat
Keywords:
rainfall-runoff simulation; land-use; semi-distributed models
Available at various institutes of the ASCR
Application of SAC-SMA and HSPF hydrological models - Lenora basin case study
Research aim is the application of two different rainfall-runoff models to a specific basin and comparison of the results of rainfall-runoff simulations obtained both with and without respect to data ...
Monitoring rainfall-runoff relationship in small mountainous catchments
Tesař, Miroslav; Šír, Miloslav; Lichner, Ľ.
2004 - English
Wide monitoring network covering the main massifs of the Bohemian border is discussed. As an example of obtained results, the influence of vegetative cover on the soil water regime in the Modry potok catchment in the Giant Mts. (Krkonose) is presented. Je popsána rozsáhlá monitorovací síť zřízená v hlavních českých hraničních masivech. Jako příklad získaných výsledků je uveden vliv vegetačního porostu na vodní režim půd v povodí Modrý potok v Krkonoších.
Keywords:
runoff hydrology; plant transpiration; water retention in a catchment
Available at various institutes of the ASCR
Monitoring rainfall-runoff relationship in small mountainous catchments
Wide monitoring network covering the main massifs of the Bohemian border is discussed. As an example of obtained results, the influence of vegetative cover on the soil water regime in the Modry potok ...
New results from assessment of chosen microbiological, physical and chemical qualities of groundwater by factor analysis
Ďurďová, Libuše; Tungli, L.
2003 - English
During research of groundwater chemistry development at Morava river watershead several geochemical and hydrogeological methods were applied for research of the cause of change of groundwater chemistry form hydro-carbonate to sulphate type.
Keywords:
groundwater; chemical, microbiological and physical qualities; factor analysis; faktorová analýza
Available at various institutes of the ASCR
New results from assessment of chosen microbiological, physical and chemical qualities of groundwater by factor analysis
During research of groundwater chemistry development at Morava river watershead several geochemical and hydrogeological methods were applied for research of the cause of change of groundwater ...
Plant control of hydrological cycle in headwater regions
Šír, Miloslav; Tesař, Miroslav
2003 - English
Headwater regions of the Czech mountains and piedmonts were originally covered with the climax vegetation, mainly mixed and deciduous forests, actually with dominanting antropogenous spruce monocultures and meadows.
Keywords:
hydrological cycle; plant transpiration; natural selection hypothesis
Available at various institutes of the ASCR
Plant control of hydrological cycle in headwater regions
Headwater regions of the Czech mountains and piedmonts were originally covered with the climax vegetation, mainly mixed and deciduous forests, actually with dominanting antropogenous spruce ...
Pipeline transport of fossile fuels
Vlasák, Pavel; Berman, V.; Chára, Zdeněk
2003 - English
The paper deals with hydraulic pipeline transport of fossil fuels. A general analysis of coal and heavy viscous oil pipelining systems is introduced and pipeline transport of concentrated coal-water slurry, coal-water fuel, coal pipelining in other than water carrier liquid (e.g. methanol) and capsule pipeline transport (coal-log pipelining) is described.
Keywords:
pipeline transport; fossile fuels; analysis
Available on request at various institutes of the ASCR
Pipeline transport of fossile fuels
The paper deals with hydraulic pipeline transport of fossil fuels. A general analysis of coal and heavy viscous oil pipelining systems is introduced and pipeline transport of concentrated coal-water ...
Rainfall - runoff relationship in small mountainous catchments
Tesař, Miroslav; Šír, Miloslav; Pražák, J.
2003 - English
The singular phenomenon of flow instabilities was observed in a small catchment: in some situations, the water supplied by rain caused a pronounced decrease in the soil water content. This soil water movement can be explained by assuming an irregularly oscillating outflow of soil water into lower horizons. In these situations a large volume of water flows through the soil; on the hydrological scale, this phenomenon forms a great part of the outflow from a watershed. The phenomenon can be described in the frame of the instability driven flow theory and explained as consequence of the porous soil bodyŽs capacity to become conductive in results of a very little change of its moisture. In this way, the soil profile can attenuate or amplify the rainfall pulses during their transformation to the outflow.
Keywords:
hydrology; runoff; rainfall
Available at various institutes of the ASCR
Rainfall - runoff relationship in small mountainous catchments
The singular phenomenon of flow instabilities was observed in a small catchment: in some situations, the water supplied by rain caused a pronounced decrease in the soil water content. This soil water ...
Modeling water regime in a small watershed
Vogel, T.; Tesař, Miroslav; Císlerová, M.
2003 - English
The paper is focused on the role of the soil water regime in formation of subsurface runoff. One-dimensional dual-permeability model is used to simulate variably saturated movement of water in the soil, in which preferential flow effects were reported. Simulated pressure head variations are compared with the available tensiometric observations. A possible conceptual model of prevailing water transfer mechanism in a hillslope segment is presented. The shallow subsurface flow is approximated by one-dimensional saturated flow along the inclined soil-bedrock interface. For a selected growing season, the model generated hillslope hydrograph is compared with the observed stream hydrograph. The simulated subsurface runoff peaks compare well with the measured stream discharge peaks.
Keywords:
Soil water regime; Subsurface runoff generation; Rainfall-runoff event
Available at various institutes of the ASCR
Modeling water regime in a small watershed
The paper is focused on the role of the soil water regime in formation of subsurface runoff. One-dimensional dual-permeability model is used to simulate variably saturated movement of water in the ...
Generalized energy inequality for suitable weak solutions of the Navier-Stokes equations
Kučera, P.; Skalák, Zdeněk
2003 - English
In the paper we show the existence of a suitable weak solution of the Navier-Stokes equations, in which the generalized energy inequality holds for all smooth test functions, that is up to the boundary.
Keywords:
Navier-Stokes equations; suitable weak solution; singular point
Available at various institutes of the ASCR
Generalized energy inequality for suitable weak solutions of the Navier-Stokes equations
In the paper we show the existence of a suitable weak solution of the Navier-Stokes equations, in which the generalized energy inequality holds for all smooth test functions, that is up to the ...
On the Diameter Efect in Surfactant Flow
Myška, Jiří
2002 - English
The lecture shows the influence of the diameter size of a tube on the flow of suspension of rigid particles with a drag reducing surfactant. The experimental variables were both concentrations of suspension and surfactant, and four different tube diameters.
Keywords:
Fluid Mechanics; hydromechanika
Available at various institutes of the ASCR
On the Diameter Efect in Surfactant Flow
The lecture shows the influence of the diameter size of a tube on the flow of suspension of rigid particles with a drag reducing surfactant. The experimental variables were both concentrations of ...
L
Skalák, Zdeněk
2002 - English
It is proved that if two components of a suitable weak solution v of the Navier-Stokes equations are from the space L2(0,T,W
Keywords:
Navier-Stokes equations; pressure
Available at various institutes of the ASCR
L
It is proved that if two components of a suitable weak solution v of the Navier-Stokes equations are from the space L2(0,T,W
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