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Changes in rainfall-runoff regime and biogeochemistry in headwater areas
Fraindová, Kateřina ; Matoušková, Milada (advisor) ; Komínková, Dana (referee) ; Matschullat, Jörg (referee)
Headwater areas are a very important current or potential drinking water source. Their ecological value for the whole ecosystem is equally important. Headwater areas are sites with minimal anthropogenic intervention and usually the least polluted water sources. Changes in climate and rainfall-runoff (R-R) regime together with water quality in these areas affect the status and availability of water further downstream significantly. It is also one of the most sensitive areas and is an early indicator of ongoing changes. This thesis focuses on the main issues that are already ongoing and are affecting the availability of drinking water significantly. Some of these are trends in R-R regime in the context of the climate change and glacier retreat in headwater areas. As a very good example of a mid-latitude river with a complex rainfall-runoff regime, where a large impact of regional climate warming and glacier retreat are strongly manifested, The Athabasca River Basin was selected for this study. Related to this issue is the river water quality, which is influenced by changes in both temperature and R-R regime, together with the increasing occurrence of extreme hydrometeorological situations such as droughts and floods. The effects of land cover on water quality are also analysed, along with consideration of...
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Oil Sands Mining in Alberta: Economic and Environmental Connections
Fraindová, Kateřina ; Jeleček, Leoš (advisor) ; Vrtiška, Tomáš Josef (referee)
Bituminous sands currently represent a real energy source that could temporarily replace already consumed part conventional sources of crude oil, which decrease. Acquisition of such strategic minerals is much more difficult both economically and technologically and represents a considerable negative impact on the environment. This paper first introduces general characteristics and problems of the crude oil extraction. Briefly describes different types of mining technologies that are used or are under development. Then focuses on an overall assessment of production in terms of economic and environmental aspects. The work focuses on the assessment of positive and negative impacts both on the economy of Canada and the environment, especially in the area of mining in Alberta. Key words: oil sands, economy of mining, environmental impacts, Canada, Alberta
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Trends of hydroclimatic factors in selected catchments of the Ore Mts.
Navrátilová, Denisa ; Matoušková, Milada (advisor) ; Fraindová, Kateřina (referee)
The bachelor work deals with identification of the trends in data series of the chosen hydroclimatic factors (temperatures, rainfall and runoff) of the upper Svatava River basin and of the Načetín Brook which both drained the Ore Mountains. The main aim of the thesis is identification of the trends of both study catchments and their comparative analysis. The study uses mean daily discharges data from the gauging stations Klingenthal and Rothenthal and also from the German climatic stations situated near study catchments. The introductory part describes physical-geographic characteristics of study catchments. The main attention is paid to the analysis of temperatures, rainfall and runoff, e.g. by the method of linear regression, simple sum curves and by Mann-Kendall statistic test. More detailed analysis of the runoff was done using IHA software. Results of analysis show a significant annual trend of temperatures increasing and runoff decreasing during the examined period. The most significant changes in temperatures and runoff is recorded in the spring and summer seasons. Key words: outfall, rainfall, temperatures, the change of the rainfall-outfall régime, Mann- Kendall test, IHA analysis
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Changes of rainfall-runoff regime in the Athabasca River basin
Fraindová, Kateřina ; Matoušková, Milada (advisor) ; Kliment, Zdeněk (referee)
Athabasca River Basin is located in an area which is affected by many factors. During the last century, the global warming manifests here, resulting primarily into increasing temperatures and glaciers melting in the headwaters area. Much of the middle reaches watershed is used for agriculture, for irrigation of which water from the Athabasca River is pumped. In recent years, controversial development of bituminous sands mining is carried out in the basin. Although it represents a real energy source, the mining requires large amounts of water, which is largely drawn from the Athabasca River. The work therefore analyzes the runoff change in the upper, middle and lower reaches during the last forty years. Along with the time series air temperature changes and precipitation totals, which can also explain runoff changes, are analyzed. Powered by TCPDF (www.tcpdf.org)
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Oil Sands Mining in Alberta: Economic and Environmental Connections
Fraindová, Kateřina ; Jeleček, Leoš (advisor) ; Vrtiška, Tomáš Josef (referee)
Bituminous sands currently represent a real energy source that could temporarily replace already consumed part conventional sources of crude oil, which decrease. Acquisition of such strategic minerals is much more difficult both economically and technologically and represents a considerable negative impact on the environment. This paper first introduces general characteristics and problems of the crude oil extraction. Briefly describes different types of mining technologies that are used or are under development. Then focuses on an overall assessment of production in terms of economic and environmental aspects. The work focuses on the assessment of positive and negative impacts both on the economy of Canada and the environment, especially in the area of mining in Alberta. Key words: oil sands, economy of mining, environmental impacts, Canada, Alberta
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