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Analysis of factors affecting a direct runoff from the catchment area
NEUBAUEROVÁ, Andrea
This diploma thesis follows my bachelor thesis. The main purpose of the bachelor thesis was to clarify fundamental terms and to explain the sorting of particular parts of a direct flow that involves both the surface saturated flow and the hypodermic flow. This diploma thesis is focusing on the origin of direct flow in a river basin. Specifically, it deals with river sub-basin P6, P52, and P53, which are located in Kopaninský potok river basin. Furthermore, it deals with Jenín I. and II. river basins and the last analysed is Ostřice river basin (SO2). Factors influencing direct flow are researched on all river basins. It is impossible to say that the origin of direct flow is caused solely by a single factor; it is always the result of multiple factors. Among these factors belongs the atmospheric precipitation, type of soil, vegetation, climatic and anthrophogenic conditions, land use, and inclination of the area. The bachelor thesis explains the issues of multiple methods of flow separation, but this diploma thesis is primarily focused on two methods for calculation of ratio between the direct and the total flow. 1) Empirical method GROUND, which is used to separate hydrographs of medium daily river basin flow. 2) Method of digital filter by Lyne Hollick separate fast and slowcomponents from the overall concentrated flow and are based on the theory od signal analysis. Afterwards, the results of flow separation were compared to the factors influencing the origin of the direct flow. The daily total flow rates for every analysed river basin were used as the input data for calculating the flow separation.
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Analysis of the effect of drainage systems for water catchment system
NOCAROVÁ, Hana
In this diploma thesis I follow my bachelor thesis and generally deal with drainage systems and their influence on a water regime of a river basin. In the theoretical part, I describe issues associated with the drainage systems, whether their impact on the landscape or generally how they affect the water regime. Further I explain the water runoff in the landscape from its sorting and description of various runoff types up to the methods of its separation. Basic methods of the separation are described here, as well as separation with the use of digital filters. In the last part, these methods are used for separations of the runoff at selected river basins which are described in detail in the chapter named "material". For further comparison and results, the calculation of the runoff coefficient, analysis of precipitation and runoff events and analysis of subsidence branches were used. The chapter "results and discussion" where all results of this thesis are explained has been placed at the end.
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