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Usage of meteorological data in hydrological modelling (case study in upper Vydra catchment)
Vlček, Lukáš ; Šípek, Václav
This paper deals with an evaluation of runoff formation at a small catchment (0.6 km2) consisting of two dominant soil types of the Vydra headwaters. Several Hydro-meteorological parameters have been measured at the study catchment and used in a hydrological model in an effort to estimate a proportion of surface or subsurface flow components and their effects on the outflow process. Chosen hydrological model showed that a greater proportion of an outflow from the catchment is generated, in general, from a peat bog area, mainly due to the lower evapotranspiration from the peatland compared to the mineral soil. On the contrary, during dry periods most of the outflow comes from a mineral soil and a peat bog contributes only to the outflow from the lower, permanently saturated layer.
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Evaluation of spring discharge/temperature relation in Švihov water reservoir region
KUŽEL, David
This Diploma thesis is focused on the evaluation of relation between spring water temperature and spring discharge by means of own measuring. A chosen spring was found in the area of reservoir Švihov close to the locality Hulice. Following local conditions were explored within the study: hydrology, climate, geology, natural conditions, tectonics, hydrogeology and other potential factors, which may influence runoff generation in studied locality. The work consists in a continuous monitoring of springand following evaluation of measured data. To find other possible dependencies data of water and air temperature and spring discharge were compared with the data of soil Temperature and soil moisture (this data were also obtain by own measurements). Different dependences of spring discharge and water temperature were demonstrated on the monitored site during the year. Changes in spring discharge and water temperature are cause by rapid infiltration of rainwater and by subsequent rapid runoff out of the subbasin.
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Use of stable hydrogen and oxygen isotopes in hydrology of small catchments in the Czech and Slovak Republic
Šanda, M. ; Vitvar, T. ; Holko, L. ; Blažková, Š. ; Bůzek, F. ; Císlerová, M. ; Fottová, D. ; Kostka, Z. ; Kulasová, A. ; Kvítek, T. ; Šnytr, O. ; Tachecí, P. ; Tesař, Miroslav ; Vícha, Z. ; Žlábek, P.
The contribution summarizes the development of isotope hydrology and hydrogeology in the Czech and Slovak Republic over the past 40 years. Records of 18O and 2H in nine experimental catchments and their interpretation provide a description of runoff component mixing from various soil and rock environments, as well as a calculation of mean water residence time of 7 to 25 months. The 18O and 2H content in two profiles of the Jizera River and two boreholes in the lower reaches shows little communication of river water with the groundwater supply resources in the Lower Jizera area; the communicaton increases with pumping intensity. The 18O and 2H content in wetlands and groundwater in two catchments of the Jizera Mts. shows the differences in recharge to the wetlands via groundwater or precipitation. The isotope hydrology and hydrogeology perspectives in the ČR and SR include capacity building, cooperation of laboratories and conjunctive use of izotopic and hydrogeochemical approaches.
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