|
|
Hydrology of mountain seepage lakes
Kohn, Tomáš ; Stuchlík, Evžen (advisor) ; Šobr, Miroslav (referee)
The aim of this thesis is a review of the hydrological balance of mountain lakes, focusing on lakes without ground outflow, or with a huge share of seepage upon the outflow. This thesis deals, step by step, with the methods of collecting data for each input and output to the hydrological system. It is also concerned with the possibilities of monitoring ground water movement and rainfall-runoff models.
|
|
|
Analysis of rainfall-runoff regime in the catchment of the Slatinny brook (Krušné hory).
Buková, Eva ; Matoušková, Milada (advisor) ; Šobr, Miroslav (referee)
Analysis of rainfall-runoff regime in the catchment of the Slatinny brook (Krušné hory) ABSTRACT Bachelor thesis deals with the characteristics of runoff regime Slatinny brook, which is located in the northwest of the Czech Republic in the Ore Mountains. Part of this study is dedicated to general physical and geographical characteristics, which also includes hydrographic basin features. The main objective of this study was to process and analyze the hydrological data obtained from experimental monitoring carried out by the Department of Physical Geography and Geoecology, Faculty of Science, Charles University in Prague. The data were firstly homogenized and than complemented with the missing values. Discharges have been derived from the modified data of water levels using the consumptive curve. For the analysis of rainfall-runoff regime were used basic statistical methods used in hydrology. The thesis also includes analysis of selected extreme runoff situations of the Slatinny brook. Key words: rainfall-runoff regime, outflow variability, discharge, Slatinny brook
|
|
|
Possibilities of derivation of discharges at high stages at selected profiles of KFGG
Kabelka, Tomáš ; Šobr, Miroslav (advisor) ; Kliment, Zdeněk (referee)
This bachelor thesis is dedicated to the regressive surveys on the water flow at high stages. It is necessary to know the surface profile and the velocity of water to calculate the flow rate. We will create transverse flow profile from the known maximum water level during the flood, which is determined by traces in the terrain. We can use to derive the discharge valid rating curve or the method of calculating velocity with certain values of roughness coefficients, which are influenced by natural flow conditions and its surroundings. Findings described in the literature are then applied to stages recorded in the profile Křemelná in Sumava Mountains.
|
|
|
Evaluation of extreme rainfall-runoff situations in experimental catchements in Jizerské Mts.
Váňa, Jan ; Šobr, Miroslav (advisor) ; Královec, Václav (referee)
One of the aims of my dissertation is to evaluate extreme rainfall - runoff conditions in elected experimantal basins of Czech Hydrometeorological Institute in region of Jizerské hory in hydrometeorological period 2009. I would like to evaluate effect of different geografical conditions in particular basins in the course of one year in details analysis of individual events. I pay attention to define model territory and basic description of his physical - geographical condition in introduction of my dissertation. I describe conditions of model area detailed, because this conditions are involved in formation of extreme flowing situations. Summary of this dissertation build up base of my dissertation. Summarization of bibliography was exetuted assigned subject. I composed generate and rainfall - runoff conditions of rainfall - runoff situations in my dissertation. This teoretical knowledges were used in practical section where I showed detailed analysis of three chosen hydrological events. It regards floods, which include spring snow melting, flash flood rised to rainfall downfalls and generated rainfalls long-range character. I describe impact of different geografical conditions at base of obtained results in each of seven experimantal basins of Czech Hydrometeorological Institute in the course of...
|
|
|
Observation of annual water level changes on lakes in High Tatra Mts.
Sankotová, Tereza ; Šobr, Miroslav (advisor) ; Janský, Bohumír (referee)
The presented thesis deals with annual lake level fluctuation in the High Tatra Mountains. It focuses on the related issue of the hydrological regime of lakes and the process of observation of level fluctuation depending on the genetic type of a lake. On the basis of the available literature, the thesis aims to determine the causes of annual changes in the level fluctuation and to compare these with other alpine lakes. The findings are applied to the lake level fluctuation data originating from the Skalnaté pleso and Hincové Oká. Through a comparison of level fluctuation of lakes in the High Tatra Mountains and the Šumava Mountains significant differences in the annual running of lake levels were found. By contrast, the comparison with the lakes in glacial area, whose hydrological regime is dependent on other physical-geographical factors, show that the annual running level fluctuations are similar. Key words: High Tatra Mountains, lake, hydrological regime
|
|
|
Development of fluvial lakes in the Lužnice River floodplain
Hastíková, Petra ; Šobr, Miroslav (advisor) ; Havlíková, Petra (referee)
The object of the thesis is to evaluate the development of several chosen fluvial lakes in the basin of the river Lužnice, mainly in the section between the border with Austria and Suchdol nad Lužnicí. The river Lužnice in this particular section represents low intensity of modification. Many fluvial lakes are situated there and the river is meandering remarkably in the area. The first part of the thesis deals with the characteristics of the natural conditions in the basin of Lužnice and the defined floodplain and the problematics of lakes and their determination. The main part of the thesis focuses on the evaluation of the flow development and fluvial lakes of the Lužnice floodplain based on the data of a aerosnapshoting. Because of the gradual decease of the meanders and straightening of the flows, it is possible to claim that the river has been considerably shortened with the passing time. In the thesis, 34 chosen fluvial lakes, that were measured morphometrically and batymetrically, were studied in detail.
|
|
|
Movements of ploughing blocks at the Čertova louka site (Krkonoše Mts) in 2009-12
Horáčková, Lenka ; Engel, Zbyněk (advisor) ; Šobr, Miroslav (referee)
Present researches of ploughing blocks deal with a recent blocks' activity issue and with causes of movement of the blocks downslope. Research at Čertova meadow has measured changes of boulders' locations in period 2009 - 2012, processes of undersurface temperature and dependence of movement on mass of the boulder and snow cover layout. Triennial research didn't prove the movement of boulders dependence on mass of boulder, however it showed dependence depth into which boulders are embedded in the soil and height of the boulder above terrain. Annual changes of boulders' movement were irregular. The overall assessment in period 2009 - 2012 showed that more than half of the boulders were in correspondence with vertical and horizontal direction of movement downslope. For confirmation of the movement of boulders it is necessary to carry out long- term measurement. Key words: ploughing blocks, periglacial environment, East Krkonoše Mts.
|
|
|
Geographical division of the World Ocean
Kohoutková, Lucie ; Janský, Bohumír (advisor) ; Šobr, Miroslav (referee)
Geographical Division of the World Ocean Abstract Delimitation of ocean boundaries has a big importance for coastal as well as continental countries due to economical, political and other concerns. Division of the World Ocean varied a lot in the past and significant regional differences of its concept were formed. Not only the location of boundaries but even the number of identified subdivisions of the ocean varied. Some oceanographic schools which don't recpect international agreements and delimitate their own ocean boundaries still exist. Thanks to that there are still many problematic areas where neighbouring countries arque about a part of the ocean. The prefence for boundaries delimitation is very important and often also controversial. Tree main oceans - Pacific, Atlantic and Indian Ocean - are traditionally delimitate separetly for what many reasons exist. Many authorities still doubt about the independence of the Southern Ocean. The publication of 4th edition Limits of Oceans and Seas where the Southern Ocean should be officially accepted will be very significant. Keywords: Division of the World Ocean, ocean boundaries delimitation, the Southern Ocean
|
|
|
Hydrological regime of the upper Lužnice river
Svoboda, Pavel ; Janský, Bohumír (advisor) ; Šobr, Miroslav (referee)
The aim of this paper is evaluation of hydrological regime of the upper part of Lužnice River basin. Upper stream of the Lužnice river represents low intensity of modification. Larger part of the river is a meandering stream with many ponds and pools in the floodplain where the safe retention of water during floods is possible. First part of this paper focus on detailed area hydrography description. The main part concentrates to hydrological regime. The methodology of this research is based on statistical evaluation of the longtime data series from the Pilař station. Flood events and dry periods are analyzed during the past 46 years. Detailed discharge measurements (realized in this area by Faculty of Science, Department of Physical Geography and Geoecology) are used for recent flood evaluations. Higher occurrence of floods and dry periods was identified in the past 10 years.
|
|
| |
guest ::
