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Continentality representation in regional climate models
Hudek, Jakub ; Belda, Michal (advisor) ; Huszár, Peter (referee)
Continentality of climate is one of the basic climate phenomena, describing the climate at current place according to annual changes of basic meteorological elements such as temperature, precipitation, etc. Its measure is usually expressed by indices and is being determined either according to observations using collected data or simulated by climate models. The goal is usually to determine the ability of climate models to represent the present state of climate and to determine and analyse the scenarios of future evolvement for Europe as an examined area. In present diploma thesis are briefly introduced terms like continentality, its indices, global and regional climate models, the ERA-Interim reanalysis, as well as the EURO-CORDEX iniciative. Subsequently individual simulations are processed, analysed and compared with the observations according to the E-OBS dataset.
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Continentality of climate over Europe
Hudek, Jakub ; Holtanová, Eva (advisor) ; Kliegrová, Stanislava (referee)
In present work the continentality of climate over Europe is studied. Attention is given to its basic characteristics, geographic distribution and its dependences on latitude and longitude. Firstly basic terms such as annual air temperature amplitude, thermal continentality and corresponding indices that characterize it are described. Attention is paid to the geographic distribution of continental indices for two reference periods (1951 - 1980 and 1981 - 2010) and the differences between them. The dependences of individual indices on latitude and longitude in order to capture in greater detail their properties are also studied. The results have shown that there has been considerable change of continentality between these periods in most of Europe's territory, which is described in detail in this work.
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Analysis of peak and critical strength of remoulded clay from Jiři mine
Mužík, Vlastimil ; Boháč, Jan (advisor) ; Hudek, Jiří (referee)
This Thesis deals with the determination of the critical and peak strength of clay fill soils from open mine Jiří. The strenght of clay was determined by conventional triaxial apparatus and triaxial apparatus with frictionless specimens, and two types of direct shear box: translational and ring shear box. The results of laboratory tests are discussed and compared with data of geotechnical investigation of landslide in mine Jiří.
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Shear strength of sand under very low normal load
Hudek, J. ; Koudelka, Petr
Solutions of some extraordinary geotechnical problems need knowledge of shear strength in a scale of very low normal stress. An example is physical modelling of soil mass behaviour using medium or little samples. The paper deals with results of testing a very dry uniform quartz sand of medium size. Resulting values of effective shear strength for the normal stress scale till of 25 kPa are compared with former testing of the same material in other scale of 63 – 163 kPa.
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