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Base flow-separation method, factors affecting the incidence and size
VLASÁK, Ivo
This bachelor thesis focuses on hydrological cycle, hydrological balance and hydrology of underground waters. Underground waters holding in a river stream is one of the most important characteristics of hydrological mode of a river. Underground waters proportion is detected from a line of flow rate in the course of many years via so called separation of underground river stream. There are several methods of separation and problematics of these methods is described in detail in this thesis. What is mentioned further are the factors influencing occurance and size of an elemental outflow rate, these factors being in particular climate, geology,relief of land, vegetation and last but not least human aktivity. Outflow rate which comes through the cycle of underground waters can be considered as an elemental outflow rate. Outflow rate is a subject matter of a further chapter. Water flowing out in a form of an elemental outflow rate creates both surface and underground waters, which are constituents of a cycle of water in the nature, which is described in this thesis in a detail together with surface, underground and subsurface water.
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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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Direct run-off - formation and separation methods
NEUBAUEROVÁ, Andrea
The bachelor´s thesis occupies with an issue of a direct flow. The main purpose is the explanation of the basic terms of the issue and the explanation of the sorting of particular parts of a direct flow, that involves a surface saturated flow and a hypodermic flow. Subsequently the thesis describes its participation in the hydrogeological cycle, which means the participation in the permanent circulation of a surface and underground water on Earth. The extreme precipitations are dangerous due to their force, total sum and intensity. The inception of hydrological occurrences like floods or dry seasons is possible owing to this. The fallen precipitations have a big influence on a surface flow and a transportation of soil particles. The thesis is focused on the inception and the genesis of a direct flow. Further it focuses on the factors that influence the flow. Among these factors belong climatic and anthrophogenic conditions, vegetation, type of soil and atmospheric precipitations. There are clarified selected methods of potential separation which are explained and described in detail. This part of the issue mentions CN curve method, GROUNG method, MPGM, analysis of dropped subdivisions and finally method of digital filter (Chapman). These methods divides the flow on an elemental flow and direct flow.
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Formulace požadavků na soudobou ochranu tropických biotopů jako příprava na příspěvek ČR k naplňování Úmluvy o biodiverzitě
Velká Amazonie, o.p.s., Ústí nad Labem ; Hollová, Jana ; Říčan, Oldřich ; Zelený, Mnislav
CD-ROM obsahuje práci Biologická diverzita povodí Rio Caura (Venezuela, Bolivar), a hlavní směry ochrany v součinnosti s domorodým obyvatelstvem (literární rešerše k biodiverzitě povodí Rio Caura, vlastní výsledky z terénního průzkumu v lednu 2006 a shrnutí). Hlavní cíle ochrany, expedičních výprav a biologického výzkumu v povodí Rio Nichare navrhované nadací Velká Amazonie v součinnosti s domorodým obyvatelstvem kmene Yekwana: 1) Zastavit realizaci všech plánů, které by mohly zapříčinit změny hydrologického cyklu povodí Rio Caura, včetně výstavby přehrad, změny toků a výrazných změn příbřežní vegetace; 2) Zřídit monitorovací program migrujících druhů ryb; 3) Zřídit minimálně tříletý studijní program ke zjištění udržitelných kvót pro rybolov na dolní Cauře; 4) Zřídit monitorovací program celého povodí; 5) Zřídit koridory jež by chránily sezóně zaplavovaný les (až na hranici padesátileté vody); 6) Zřídit plán ochrany klíčových druhů a oblastí; 7) Podílet se na zavedení veřejných naučných programů zdůrazňujících důležitost vodního ekosystému Caury pro uchování diverzity tropického deštného lesa a životního prostoru původních etnik; 8) Zamezit introdukci nepůvodních druhů rostlin a živočichů do povodí Caury; 9) Obnovit příbřežní lesní vegetaci pod Raudal Cinco Mil; 10) Zřídit plány pro udržitelnou těžbu následujících druhů rostlin: Ocotea cymbarum, Vochysia venezuelana (používány k výrobě lodí), Acosmium nitens, Geonoma deversa., a Heteropsis flexuosa. Fotodokumentace v příloze.
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Methods of the separation of the base flow and trends of nitrogen concentrations in this base flow
MAIEROVÁ, Monika
This Bachelor thesis is aimed to clarify the hydrological cycle, hydrological balance, groundwater hydrology, the selected basic baseflow separation methods of comparing them and last but not least, nitrogen cycle, nitrogen, nitrates, ammonia nitrogen and nitrogen in groundwater. In the work there is also closely analyzed the total, surface and subsurface outflow and the detailed division. The methods of the groundwater baseflow separation are described with regard to content of nitrogen compounds., which currently create the most common type of pollution of groundwater used as drinking sources.
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