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Effect of climate change on hydrological extremes in montane catchments
Čermák, Daniel ; Langhammer, Jakub (advisor) ; Jeníček, Michal (referee)
This master thesis deals with the issue of low-flows in mountain catchments in the context of expected climate change. The Zdobnice, Vydra and Mumlava river basins are selected for analysis. In the first part of thesis, the meteorological and hydrological historical data are evaluated. This data are obtained from CHMI (Czech Hydrometeorological Institute). The work also focuses on estimating the possible change in flow rates in the distant future (2100). For these purposes, the conceptual model HBV is used. This model is often used for these types of analyzes due to its robustness. To evaluate the change, twelve alternative scenarios were created. These scenarious were based on the results of global and regional climate models related to each selected river basins. The model was calibrated using the automatic GAP optimization function. Based on the best results, the calibration period is set for the years 1980 - 1998. Climate models suggest increase of temperature in far future by 1.5 ř C - 4.5 ř C. At the same time, according to climate models, we can approximate a total precipitation change by 10 %. Based on climate changes, a shift in the runoff seasonality in the all river basins is evident. Seasonality change is most visible in the Zdobnice river basin. In terms of hydrological drought, an...
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Depiction of natural and anthropogenic disasters in contemporary audiovisual environment - (main czech news broadcast ČT, Nova, CNN Prima News)
Doubravová, Zuzana ; Macková, Veronika (advisor) ; Géla, František (referee)
The bachelor's thesis entitled Depiction of natural and anthropogenic disasters in the contemporary audiovisual environment - (main Czech news broadcast ČT, Nova, CNN Prima News) deals with media segments of main Czech news broadcast dedicated to disasters. The theoretical part includes a definition of catastrophes as events, offers a short historic outlook on the beginnings of their portrayal in audiovisual news media, and covers the main transformations of the role journalists while working on them. It also describes the latest technology, problematic elements in broadcasting and psychological influence of audiovisual news reporting on disasters. The main part of the examination is to analyse the depiction of the floods 2020 in the Czech Republic, Australian bushfires 2019-2020, and hurricane Laura 2020 in the United States of America. These events represent domestic and foreign disasters. The work also offers brief characteristics of selected broadcasts and disasters. The work aims to contextualise chosen problematic, analyse and compare related segments in selected broadcasts. The work uses methodology of content analysis and comparison. It is a case study.
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Analysis of fluvial dynamics of montane stream using UAV
Šolc, Jakub ; Langhammer, Jakub (advisor) ; Hartvich, Filip (referee)
6 Abstract In recent decades the field of fluvial geomorphology has moved towards the most detailed and comprehensive description of the processes in fluvial systems. The recent development of UAVs (Unmanned Aerial Vehicles) has been a major contribution in analysis of fluvial processes, it provides very detailed data for change analysis. This thesis deals with the analysis of recent fluvial dynamics using UAV. The theoretical part of the thesis summarizes the current theoretical and methodological knowledge from the study of fluvial dynamics and also presents the general principles of UAV monitoring with its use in fluvial-geomorfological research. Recent fluvial dynamics was evaluated in the stretch of Javoří brook in Šumava Mountains where the long-term research is conducted by the Department of Physical Geography and Geoecology. Causal runoff events with an impact on fluvial dynamics were identified on the basis of the analysis of hydrometeorological data covering hydrological years from 2016 to 2020. A total of fourteen events exceeded the threshold of channel-forming discharge Q = 5,041 m3 ·s−1 in the investigated period. Geometrical, morphological and volume changes were evaluated based of the photogrammetric reconstruction of the riverbed during three successive scannings (2015, 2018, 2020). The...
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Land cover changes in Ore Mountains and their possible impact on rainfall-runoff process
Kratochvílová, Petra ; Jeníček, Michal (advisor) ; Královec, Václav (referee)
Land cover changes in Ore mountains and their possible impact on rainfall-runoff process Abstract Land cover changes have occurred since the formation of Earth, but increasingly, these changes mainly in anthropogenic characters, a big problem in many places around the world. It is, therefore, necessary to monitor how land cover changes, and its impact on individual natural processes and use these results of studies in preventing or fix possible consequences of these changes. More and more disciplines are, therefore, also examines this issue. This paper deals with the assessment of land cover change and its impact on rainfall- runoff process, focusing mainly on mountain basin where this influence manifests itself most expressive, both influencing the water balance of the basin, and influence responses to extreme hydrological events. The findings are applied to the upper basin Chomutovka in the Ore mountains where the thesis evaluates changes in land cover on the basis of aerial photos from 1975, 1987 and the present day (2010). Changes are visualized using digital vectorization and color differentiation of areas of individual land cover types, further processed into a map series and subsequently quantified. According to the results are established the major factors of possible rainfall-runoff processes in...
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Emergency planning within the Integrated Rescue System with focus on the activities of Police of the Czech Republic
Sázavský, Jan ; Fiala, Miloš (advisor) ; Vilášek, Josef (referee)
Subject: Emergency planning within the Integrated Rescue Systém with focus on the activities of Police of the Czech Republic Objective: unify and define the legislation relating to the emergency planning with a focus on the service performance of the Czech Police and implement subsequently relevant legal standards into the tactical exercises "The Island 2011" in order to verify the practical set of principles, mechanisms with the possibilities of their evaluation based on real use. Method applied: research, classification and study of available sources, consultaion with the experts in the subject above, detailed analysis of the carried out exercises. Outcome: Based on the study of legislative norms indicating the framework of activities of individual components of Integrated Rescue Systém, consulting the respective variants of implementation of practical knowledge, as a result, the exercise was designed in order to verify the ability of the police management to manage and control the forces and resources during the performance of the police tasks and also to verify the practical ability of police Officers to perform set tasks and cooperate in the place of intervention with units and relevant agencies. Key words: Integrated Rescue Systém, crisis management, emergency planning, tipical aktivity,...
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Floods monitoring using ENVISAT / MERIS data
Rohelová, Kamila ; Štefanová, Eva (advisor) ; Potůčková, Markéta (referee)
Floods monitoring using ENVISAT / MERIS Abstract The object of this research work is to determine the suitability of data MERIS for monitoring floods. This study deals with issues of optical satellite data with medium spatial resolution for monitoring floods. It gives an overview of the use of methods for detection of flooding. Possibilities of data are practically tested on the selected archived data using the ESA of designed algorithm. A partial order is also screening the suitability of data for the Czech Republic. Processing of satellite data was done using free software Beam. Evaluation of possible use for monitoring is done on the basis of the resulting map outputs. Keywords: Floods, Envisat, MERIS
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Evaluation of rainfall-runoff regime in the headstream area of the Blanice River with regard to major events
Kodádková, Iveta ; Kliment, Zdeněk (advisor) ; Královec, Václav (referee)
Evaluation of rainfall-runoff regime in the headstream area of the Blanice River with regard to major events ABSTRACT The bachelor thesis provides an understanding of the rainfall-runoff conditoins in the upper basin of the South Bohemian river Blanice focusing on the flood situation. It deals with the evaluation of significant rainfall-runoff episodes in the basin in terms of their frequency, seasonality and weather causal situation. The analysis used data from the Czech Hydrometeorological Institute for profile Blanický mlýn for the years 1952 to 2009. Attention is also paid to physical-geographical conditions and their possible influence on the occurrence of flood situations. Described in detail was a flood in late June and July 2009. Keywords: rainfall-runoff conditions, floods, Blanice
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Rainfall-runoff regime in the headwater part of the Bystřice River basin
Šedivá, Kateřina ; Jeníček, Michal (advisor) ; Hladíková, Alice (referee)
Rainfall-runoff regime in the headwater part of the Bystřice River Abstract This bachelor thesis deals with the rainfall-runoff regime and analysis of extreme situations in the headwater part of the Bystřice River basin. At first, the area of interest is described in physical and geographical terms and the influences of individual factors on the runoff are mentioned. The text content is documented by maps. The characteristic of rainfall-runoff regime is evaluated by means of runoff variability parameters. The variability is assessed by means of collected data using charts illustrating exceedance probability of average daily discharges in years 2009 and 2010. The flow variations are evaluated on the basis of decile deviations. The distribution of monthly discharges in the Bystřice River is displayed and the monthly flow variability is described in pie graphs separately for hydrological years 2009 and 2010. The monthly balance of the runoff is also evaluated by means of statistical measures of Kr and Cv coefficients. Finally, the runoff regime evaluation is completed with exceedance probability calculation of the mean annual discharge. The assessment of selected extreme events forms an important part of the thesis. Extreme situations are compared with synoptic situations; it contributes to explain causal...
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Development and research of elements of ceramic masonry systems for areas with increased risk of floods
Novák, Vítězslav ; Černý,, Robert (referee) ; Dobiáš,, Jiří (referee) ; Sokolář, Radomír (referee) ; Zach, Jiří (advisor)
One of the most widespread causes of building deterioration is high moisture, which in extreme cases may even arrive as floods. The action of high moisture in a structure often results in damage or alteration of properties, but it can be mitigated with various protective measures, most commonly waterproofing. However, the efficacy of waterproofing depends of flawless implementation. Another effective form of protection against high moisture is the correct choice of location, but the number of suitable construction plots is rapidly decreasing or their price is too high. This is why new construction, particularly family homes, now occurs even in locations known for the increased risk of high moisture. This doctoral thesis focuses on the research and development of the most common masonry systems with structural clay tiles designed to withstand application in flood areas thanks to the special properties of the individual elements, components, and the system as a whole.
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