|
|
Evaluation of physical-geographical research of the High Tatra Mts in the period 1969 - 2008
Jurdík, Michal ; Kalvoda, Jan (advisor) ; Engel, Zbyněk (referee)
This bachelor thesis deals with physical-geographical researches about High Tatra Mts published in 1969 - 2008. It describes mountains within it's geomorphological, hydrological, climate, soil and other features. I have discussed the late and novel information. It highlithed the points were the knowledge diverged. High Tatra Mts. build an exclusive complex of landscape natural components. Lots of landform factors in small area and vertical zonation with variable characteristics makes this area a good model for geographical studies. Key words: physical geography, High Tatra Mts.
|
|
|
Recent development of Ferdinandbreen valley glacier in Petuniabukta (Svalbard)
Tomíček, Jiří ; Engel, Zbyněk (advisor) ; Nývlt, Daniel (referee)
Svalbard archipelago is located halfway between the Northern coast of Norway and the North Pole. About 60 % of Svalbard area is covered by glaciers of many types, from small cirque to large ice caps. Retreat of most glaciers in Svalbard has been recorded since the Little Ice Age at the end of the 19th century. Deglaciation of Svalbard landscape is connected with significant changes of natural environment, such as changes of erosion and acumulation processes, climate change or beginning of vegetation succession. This thesis aims to establish the elementary glaciological parameters of valley glacier Ferdinandbreen located in Petuniabukta, central part of Spitsbergen, by analyzing remote sensing data and field GPR and (d)GPS survey and evaluate it's evolution between 1960 - 2014. Glacier's length and area have been based on aerial imagery of years 1960, 1990, 2009 and GPS measurements in 2014. Ice thickness and volume have been derived from GPR measurements. The length of the glacier in 2014 was 1,401 km, area 0,560 km2 and volume 6 561 684 m3 . The maximum measured ice thickness in 2014 was 42,5 m. During the period 1960 - 2014, the length of the glacier had been reduced by 45 % and area by 69 %, ice thickness had been reduced by 23,5 m during the period 1990 - 2014. Recorded retreats of length, area...
|
|
|
Using ground penetrating radar in geomorphology
Široký, Jakub ; Křížek, Marek (advisor) ; Engel, Zbyněk (referee)
Ground Penetrating Radar (GPR) is a non-invasive geophysical research method imaging subsurface structures. It expanded widely across geomorphologic investigation during last years because of its speed, low-cost, reliable and large-scale capability. GPR is especially useful in sedimentological studies. The thesis is focused on introducing the basics about the GPR method as it is not well-known in Czech geomorphologic scene. The physical background of the device and the electromagnetic waves is given. A research articles and books recherche helped in creating of a reflection summary amended with Czech terminology and graphic examples. The typical reflection answer of sedimentological features were documented and sorted according to the glacial, periglacial, fluvial, paleolake and slope geomorphologic environments. A sequence of steps for editing and interpreting a radargram was proposed and applied on three model radargrams.
|
|
|
Morphology of the Křížový potok river channel in the Eastern Krkonoše Mountains
Dvořáková, Magdalena ; Engel, Zbyněk (advisor) ; Kliment, Zdeněk (referee)
This master thesis deals with the morphology of mountain river channels - with structures, patterns and shapes resulting from fluvial processes. The findings are documented on the Křížový potok river channel in the Eastern Krkonoše mountains. There are several specifics which influence the evolution of mountain river channels. The first one is high elevation change and big slope of the river, which determinate the formation of typical structures, such as waterfalls, cascades and steps, often related with pools. Plane bed, riffle-pool and dune-ripple also represent typical structures of mountain river channels. Specific microstructures are represented by potholes. River channels in forested mountain basins are affected by logs and wood debris, which create local barriers where fine-grained material accumulates. In the Křížový potok river channel, a high diversity of the channel structures can be seen. The most common structures are step-pools and cascades. The stream is influenced by large accumulation of delluvial sediments and wood debris which create obstacles to the flow.
|
|
|
Ice cascades in the Krkonoše Mountains
Švec, Matěj ; Engel, Zbyněk (advisor) ; Šťastná, Petra (referee)
The objective of this bachelor thesis is to obtain and present basic knowledge of the icefall on the Krkonoše Mountains. Localization has been made by field surveys in selected areas. Height was measured using a laser rangefinder. Criteria for icefalls was fixed at least 4 m height and 4 m wide. Values for the altitude, the inclination of the surrounding slopes, orientation and height difference on the surface were calculated using morphometric analysis in ArcGis. The values were compared and discussed with regard to the relief. Another objective was to make a research of recent publication about the icefall theme and make regional physical characteristics connected to the ice forms. The number of detected icefalls is 49. The biggest concentration is in glacial trough the Labské údolí valley (30). Another areas are in glacial trough the Obří důl valley, around glacial lakes- Wielki and Mały Staw (7) and in the Velká Kotelní jáma cirque (2). Icefalls are located between 904 and 1345 m above mean sea level (average 1172 m). The maximum height of the icefall is 100m (average 36 m). The height difference on the surface range from 583 m to 740 m (avarage 637 m). The inclination of the surrounding slopes ranged from 18ř to 39ř. Icefalls are located on east- facing sites with two branches east-northeast...
|
|
|
Geomorphological evidence of the Scandinavian glaciation in the Moravian Gate
Pavurová, Zuzana ; Engel, Zbyněk (advisor) ; Nývlt, Daniel (referee)
Geomorphological evidence of the Scandinavian glaciation in the Moravian Gate Abstract This thesis is aimed at area in the Moravian Gate which was covered by continental ice sheets during the Quaternary. The goal of this thesis is to analyze results of work of Tyrá ček (2006). Main parts of this thesis are: current views on the extent of glaciated area, definition ice-marginal landforms, methods my fieldwork, results and discussion. Maps and graphs were created as a part of this thesis. Data was processed using MapInfo Professional 7.0 SCP software, ArcGIS 9 software a Microsoft Office Excel 2003.
|
|
|
Snow cover at the Čertova louka and the Modré sedlo sites (Krkonoše Mts) in winter 2010/2011
Tryzna, Vojtěch ; Engel, Zbyněk (advisor) ; Nyplová, Petra (referee)
Snow cover at the studied locations in the Eastern Giant Mountains in the winter of 2010/2011 were collected through periodic field measurements of snow cover height. For evaluation and interpretation of measurements was used data from the meteorological station on "Luční bouda" and published the results of previous measurements in the field. In the "Čertova louka" is located nivation hollow, which show an increase in the accumulation of snow, which melted in early June. In the "Modré sedlo" location, which is largely exposed to deflation, the snow lasted until the end of April. The distribution of snow cover at both sites in winter 2010/2011 were consistent with previous observations. Maximum height of snow cover was lowest (about 8.4 to 43.8 %) from the current observation and were recorded aproximately one month earlier (18. 2.). The main reason for the development of unusual snow was warm front with rainfall, which affected the studied area during March. Winter 2010/2011 has been in terms of power and duration of snow cover at the studied locations below average.
|
|
|
Formation conditions of debris flow on 15.5. 2014 in Smutná valley (Western Tatra mts.)
Dlabáčková, Tereza ; Engel, Zbyněk (advisor) ; Vilímek, Vít (referee)
The aim of this bachelor's thesis is to determinate conditions what trigger debris flow on 15. 5. 2014 in Smutna valley (Western Tatra Mts.). Statistical method 4σ and additional global and local event duration model and local event precipitation model were used. Derived values with thresholds based on these models were compared. Geomorphological mapping of debris flow using GPS was made. Another base characteristics of debris flow werefound out, e.g. areal debris accumulation or leeves, wide and depth of debris flow path. Derived rainfall values from 4σ model, event-duration model and event precipitation model was exceeded. Debris flow with it's lenght belongs to more extensive debris flows, but e.g. path widht is common in Western Tatra Mts. Keywords: landslide, debris flow, threshold, Western Tatra Mts.
|
|
| |
|
|
Variability in snow cover conditions at the Čertova louka and the Modré sedlo sites (Krkonoše Mts) during the period 2003-2013
Tryzna, Vojtěch ; Engel, Zbyněk (advisor) ; Jeníček, Michal (referee)
This work summarizes one decade of spatial snow cover distribution research on the highest plateau of Eastern Krkonoše. This research was done in respect to periglacial landforms, which develop on these localities. The research was carried out during winter seasons 2003/2004 until 2012/2013 on Čertova louka meadow and Modré sedlo saddle. The main goal of the study was to analyze spatial snow depth variability during the season. Next goal was to analyze of possible interaction of snow distribution between both localities.The measurement was carried out manually by snow probe within regular net of 141 points. Our data were further compared with snow depth on professional meteorological station near Luční bouda chalet and with regular measurements of mountain rescue guards. As the main indicator of spatial snow distribution during the season was calculated general variability index. The highest values of snow depth were regularly reached at central terrain depression at Čertova louka meadow (max. 570 cm). On the other hand the lowest values were reached on the edge of Modré sedlo saddle (min. 35 cm). The difference between those two localities is also documented by values of general variability index for Čertova louka meadow (97) and for Modré sedlo saddle (33). The greatest values were usually...
|
guest ::
