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Changes in the fluvial valley network at NW Šumava foothills
Hošek, Roman ; Hartvich, Filip (advisor) ; Borská, Jana (referee)
This bachelor thesis is focused on the processes causing the changes of the river network. Among the most important processes are tectonics, landslides, headward and lateral erosion, anthropogenic activities, lithology of a stream bed, changes of the erosion base and climate, as a factor influencing the morphology of valleys. The information from the literature search is applied on finding potential valley network changes localities based on indicators of changes of the river network, which were analysed in the GIS environment. Each potential locality was chosen for a presence of an indicator, which may signify changes of the river network: sudden direction changes of a stream, wind gap, streams which flow through topographic barrier, captured stream. The main criterion for finding potential localities was elevation above the valley-floor interpolated surface, where low values indicate low water divide between valleys. These selected localities were compared with the position of the anomalies on the longitudinal profiles of the rivers. The longitudinal profiles with sudden changes of inclination (knickpoint) indicate possible changes of the river network. Key words: changes of the river network, headward erosion, lateral erosion, river piracy, landslides, tectonics, anthropogenic activities, Šumava...
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Slope deformations in the Bohemian Paradise - research, typology and conditions of origin
Merlíčková, Soňa ; Hartvich, Filip (advisor) ; Blahůt, Jan (referee)
This thesis deals with occurrence, conditions and character of slope deformations in the Protected landscape area (CHKO) Český ráj. This area is typically formed by sandstones, marls and claystones. Together with tectonic structures and lateral erosion of the Jizera River, they form suitable conditions for slope movements such as rockfall, sliding etc. With help extensive use of the scientific literature, character of study area as well as general conditions for the development of slope movements were described, and their typological classification was established. Next part of the thesis includes the chapters on the methods of research, and a description of the preliminary field research of the model localities. Furthermore, an analysis of causes of the slope movements using the data on climate from the stations of Czech hydro-meteorological institute was performed. Finally, the results are discussed with the referenced sources and conclusions to the topic are formulated. Keywords: CHKO Český ráj, slope movements, slope deformations, tectonics, lateral erosion, land-slide, rockfall, Lužický fault
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Response of selected rivers of the Bohemian Massif to lithological and structural conditions
Flašar, Jan ; Nývlt, Daniel (advisor) ; Kalvoda, Jan (referee)
Three groups of streams were selected in the area of the Bohemian Massif: the Berounka river with its source streams; the Vltava river with its tributaries the Malše and the Lužnice; the Labe river with its tributaries the Cidlina, the Bystřice and the Javorka. The lithological and tectonical influences to several parameters of the streams were studied. These parameters include: stream gradient, orientation of the stream and sinuosity of the stream. Data were obtained from digital elevation models, aerial photographs, topographical and geological maps. The longitudinal profiles of the streams (in the combination with geological cross-sections), the SL indexes and the gradient/sinuosity graphs were created on the basis of the obtained data. These tools were used for evaluation of the influence of lithology and the tectonics to the streams. The evolution of the streams and the stream-groups was evaluated and compared as well. A strong influence of lithology on the stream gradient was found on most of the analysed streams. The tectonic situation, on the contrary, had strong influence on the orientation of the streams, especially in the resistant rocks. Also, there were selected areas, where was a higher probability of quaternary vertical movements influencing the streams (mountainous areas of the Novohradské...
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Magnetic fabric, magma flow and tectonic deformation in volcano-plutonic systems
Tomek, Filip ; Žák, Jiří (advisor) ; Lexa, Jaroslav (referee) ; Petronis, Michael (referee)
Magnetic fabric, magma flow and tectonic deformation in volcano-plutonic systems ABSTRACT This Ph.D. thesis aims to investigate dynamics of emplacement and tectonic history of selected volcano-plutonic complexes in a continental magmatic arc and back arc setting. The thesis presents new data sets from five field areas, presented in separate chapters, which could be viewed as representing a vertical sections through upper part of an intermediate to felsic magmatic system. From top to bottom in this ‛imaginary' vertical system, the examined units are: (1) andesitic lava domes and (2) sub-volcanic magma chambers (<3 km deep) of the Miocene Štiavnica volcano- plutonic complex, Western Carpathians (Slovakia), (3) Shellenbarger pluton (<3 km depth) within the mid-Cretaceous Minarets caldera, Sierra Nevada batholith in California (USA), and ~7-10 km deep granitoids of (4) Lower-Cretaceous Wallowa batholith, Blue Mountains province in Oregon (USA) and (5) Late Devonian Staré Sedlo complex, central Bohemian Massif (Czech Republic). The research incorporates extensive field and structural data, supported by analysis of igneous textures and anisotropy of magnetic susceptibility (AMS). The latter is further accompanied by detailed examination of magnetic mineralogy using thermomagnetic measurements and optical and back...
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Analog modeling of subduction zone processes
Tkáčiková, Tatiana ; Žák, Jiří (advisor) ; Krýza, Ondřej (referee)
Subduction zones, domains where oceanic lithosphere is subducted into the mantle beneath an overriding plate, are one of the most dynamic tectonic environments. A wide range of the long-lasting subduction-zone processes may be suitably reproduced and studied through analog modeling and thus may be directly observed in laboratory, though at time and length scales that differ fundamentally from nature. The main goals of this Bachelor thesis are first to provide an overview of large-scale architecture of subduction zones, to present an overview of the published analog experimental methods, and then to discuss the main outcomes of analog modeling of subduction zones and accretionary prisms. The thesis also summarizes the main mechanical parameters of materials used in the analog modeling. Furthermore, a set of simple experiments were performed, with the main goal to model formation of basalt-bearing mélanges during subduction of seamounts and volcanic belts that may occur on ocean floor and are commonly incorporated into accretionary wedges as dismembered Ocean Plate Stratigraphy (OPS).
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City within the City / "Trnitá City Block"
Žvak, Ondřej ; Květ, Radko (referee) ; Nový, Vítězslav (advisor)
The thesis deals with a design of a new construction of a polyfunctional urban house. It concerns a corner plot near the busy Opuštená avenue. The building is supposed to supplement the intended housing estate. Designed to be suitable for domestic, administrative and commercial use while maintaining an effective budget, the property is to provide the residents as well as the location with a high-quality space.
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Generating Procedural Planets
Fusek, Petr ; Polášek, Tomáš (referee) ; Starka, Tomáš (advisor)
This bachelor's thesis deals with the design and implementation of an easily extensible library for creating generators of procedural planet surfaces. The aim of the library is to enable the use of originally two-dimensional methods of procedural map generation to generate a contextually rich planet surface. The library emphasizes the extensibility and simplicity of working with the generated surface. It allows the user to create and parameterize their own generators and use their own algorithms in them. It also includes an implemented planetary elevation map generator that uses a simplified model of simulating tectonic plate collisions to generate a surface with a topology containing mountains, bays and archipelagos. Such a surface should show visual results closer to reality than the classical approach using procedural noises allows. The library is implemented together with a visualization application presenting the generated surfaces and allowing to set all possible inputs of the generator using the GUI.
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Structure-Space-City "Urban block completion"
Czapek, Jakub ; Hybská, Bohumila (referee) ; Nový, Vítězslav (advisor)
The diploma thesis deals with the creation of a design of a new apartmen building in the city of Brno on the plot expected to be completed by the city block. Typologically it deals with the current design possibilities of gallery apartment buildings / porch houses, implementation of space-demanding grocery stores and commercial areas into urban structures. Architecturally explores the possibilities of designing new constructions with citation of architectural language a tectonics of past styles.
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