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392. The quality of meteorological observations and tropospheric delay from EPN/IGS permanent stations located in the Sudety Mountains and in the adjacent areas
- Creator:
- Rohm, Witold and Bosy, Jarosław
- Format:
- print, bez média, and svazek
- Type:
- article, články, model:article, and TEXT
- Subject:
- Geologie. Meteorologie. Klimatologie, meteorologie, meteorology, Krkonošsko-jesenická soustava (pohoří), Sudety mountains, GPS for meteorology, tropospheric delay, GNSS permanent stations, precise GPS positioning, 7, and 551
- Language:
- English
- Description:
- The mountain type of climate, which is typical for the Sudety Mountains, is well known for its rapid and frequent changes in pressure, temperature and humidity. The fluctuations in meteorological parameters cause fast changes of the tropospheric delay, as a correlated value, and in consequence difficulties in GPS heights determination. The tropospheric delay is a function of the meteorological parameters obtained directly from synoptic stations and models. The paper presents the procedure of tropospheric delay estimation on the European Permanent Network and International GNSS Service (EPN/IGS) stations, using meteorological observations from synoptic stations (Wrocław Airport, Śnieżka) of the Polish Meteorology Service (IMGW), stations (Cervena, Praha-Kbely) of the Czech Hydrometeorological Institute (CHMU), and sensors mounted close to the antennas of the permanent GNSS stations (BISK, SNEC, WROC, GOPE). The values obtained from Global Pressure and Temperature (GPT) model were bases for the meteorological data calibration at EPN/IGS stations. The tropospheric delay (Zenith Total Delay - ZTD) on EPN/IGS stations was obtained from Saastamoinen formula and compared with ZTD from EPN solutions., Witold Rohm and Jarosław Bosy., and Obsahuje bibliografické odkazy
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
393. The realization of strong, stray static magnetic fields
- Creator:
- Žežulka, Václav and Pavel Straka
- Format:
- print, bez média, and svazek
- Type:
- article, články, model:article, and TEXT
- Subject:
- Geologie. Meteorologie. Klimatologie, magnetické obvody, magnetic circuits, static magnetic fields, permanent NdFeB magnets, 7, and 551
- Language:
- English
- Description:
- The article introduces the results achieved in the creation of feasible assemblies of NdFeB magnets assembled following an already published design of a practical arrangement of magnets derived from an ideal magnetization pattern, leading to the strongest possible stray field at a remote point. It presents a method of the implementation of these assembled sets and the relevant measured dependences of magnetic induction By = f(y) and By = f(x) including their comparison with already published dependences determined by a simulation. It further presents similar dependences of magnetic induction found in the case of a trial magnetic circuit with large blocks from NdFeB magnets, and these dependences are compared both with the mentioned computer-determined dependences and the dependences measured with the corresponding implemented assembly of magnets., Václav Žežulka and Pavel Straka., and Obsahuje bibliografii
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
394. The relationship between gneisses from the Kola Superdeep Borehole and their surface analogues
- Creator:
- Jiřina Trčková, Vladimír Šrein, Šťastný, Martin, and Roman Živor
- Format:
- print, bez média, and svazek
- Type:
- article, články, model:article, and TEXT
- Subject:
- Geologie. Meteorologie. Klimatologie, ruly, gneiss, Kola superdeep borehole, surface analogues, 7, and 551
- Language:
- English
- Description:
- Modal composition and grain-size characteri stics, physical and mechanical propertie s of three samples of Archean gneisses of the Kola series from the depths of 6.8 to 8.4 km of the Kola Superdeep Borehole (KSDB-3) and two collections of their surface analogues were analysed. On the basis of a comparison of the petrographic characteristics of the borehole samples and analogues, it was found that not all analogues are equivalents of corresponding core samples completely. Mechanical properties of core samples are affected by depth of the core sample position in the borehole. This work forms part of the research in the frame of the INTAS Project No.314 "Geodynamics in the cross-section of the Kola superdeep"., Jiřina Trčková, Vladimír Šrein, Martin Šťastný and Roman Živor., and Obsahuje bibliografické odkazy
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
395. The research of interrelation between seismic activity and modern vertical movements of the european permanent GNNS-stations
- Creator:
- Tretyak, Kornyliy and Romaniuk, Volodymyr
- Format:
- print, bez média, and svazek
- Type:
- model:article and TEXT
- Subject:
- geodynamika, geomechanika, geofyzika, geologie, geodynamics, geomechanics, geophysics, geology, vertical movements, velocity, seismic activity, GNSS-stations, 7, and 551
- Language:
- English
- Description:
- Based on experimental studies using the “integral velocity index of the vertical displacement of the territory” and criterion of generalized seismicity, a close functional relationship was found between two parameters of different physical nature: seismic activity and altitude displacements of the Earth’s surface in Europe. The mathematical correlation between the generalized parameters of the velocity altitude displacements on the territory and seismic activity is established according to seismic and GNSS stations for the period from 2000-2011 for the areas in Europe with close correlation between seismicity and velocity of vertical movements of the Earth’s surface. and Tretyak Kornyliy, Romaniuk Volodymyr.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
396. The resources and methods of hydrogen production
- Creator:
- Olga Bičáková and Straka, Pavel
- Format:
- print, bez média, and svazek
- Type:
- article, články, model:article, and TEXT
- Subject:
- Geologie. Meteorologie. Klimatologie, vodík, pyrolýza, kopyrol, hydrogen, pyrolysis, conventional methods, co-pyrolysis, thermochemical cycles, electrolysis, 7, and 551
- Language:
- English
- Description:
- In the near future, hydrogen will become an important fuel which may be able to resolve local problems connected with air quality. Hydrogen-propelled transport means are being developed and are already used in the automobile industry. Since the combustion of hydrogen does not produce any emissions of carbon oxides but only water, hydrogen is considered as a key fuel of the future. Hydrogen is abundantly present all over space and can be obtained from a number of resources, be they renewable or non-renewable. Global production has so far been dominated by hydrogen production from fossil fuels, with the most significant contemporary technologies being the reforming of hydrocarbons, pyrolysis and co-pyrolysis. Plasma cracking is still in the developmental stage. The preferred method of hydrogen production on an industrial scale is steam reforming of natural gas for its low operational and production costs. When the operational costs of steam reforming and partial oxidation are compared, partial oxidation seems to be a more acceptable process, but the subsequent shift makes this process more expensive. Pyrolysis processes have acceptable investment costs and besides the production of hydrogen also satisfactory yields of oils. Two-stage co-pyrolysis is suitable considering its acquisition of a high amount of hydrogen from mixed charges. It is apparent that the co-pyrolysis of organic materials with coals is a process for hydrogen production capable of competing. It can therefore play a significant role in the future., Olga Bičáková and Pavel Straka., and Obsahuje bibliografii
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
397. The study of selected magmatic rocks thermic reworking for the purpose of thermic sinking
- Creator:
- Farkašovský, Roman and Michal Zacharov
- Format:
- print, bez média, and svazek
- Type:
- article, články, model:article, and TEXT
- Subject:
- Geologie. Meteorologie. Klimatologie, žuly, granites, thermic sinking, andesite, hermic reworking, 7, and 551
- Language:
- English
- Description:
- To verify possibilities of the thermic sinking technology the experiments with magmatic rocks (muscovite-biotite granite, amphibole-pyroxene andesite, pyroxene basalt) were made in the preliminary research phase. The contribution presents the microscopic study results of petrographic and structural observations of the rocks after their thermic reworking. Mainly distribution of melted rocks in the form of glass, forming of brittle deformations (fractures) on the level of mineral and rock, and penetration of melt into fissures were observed., Roman Farkašovský and Michal Zacharov., and Obsahuje bibliografii
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
398. The study of the relationship between cracks and seismic parameters of rocks
- Creator:
- Stan-Kleczek, Iwona, Sutkowska, Katarzyna, Stan, Dominika, and Zolich, Mikołaj
- Format:
- print, bez média, and svazek
- Type:
- article, články, model:article, and TEXT
- Subject:
- Geologie. Meteorologie. Klimatologie, trhliny (fyzika), skály, cracks (physics), rocks, seismic measurement, crack tensor, velocity tensor, 7, and 551
- Language:
- English
- Description:
- This paper presents the relation between main crack systems and physical properties of carbonate rocks. The existence of cracks in a rock mass causes the reduction of seismic wave velocity, which is smaller in direction perpendicular to a crack plane than in direction parallel to it. This affects the occurrence of the anisotropy of seismic wave velocity, which is characteristic for rocks with preferred orientation of cracks. The existence of relationship between crack and seismic anisotropy allowed to use geophysical methods for determination of fracture density and orientation of crack systems. The research area is located in the south-east part of the Upper Silesian Trough. Tectonic observation and geophysical measurements was carried on the carbonate sequence on the both fold limbs building the Chrzanow-Wilkoszyn Syncline, originated during the Early Cimmerian movements, in the Upper Triassic - Middle Jurassic period. It was measured seismic waves velocity in the surface layers of rock mass and the strike azimuth and dip angle of cracks.The seismic anisotropy of the rock mass was done along radial profiles having common central point using P.A.S.I. Seis mograph (Mod.16S24-N). Results of field measurements were interpreted to estimate components of crack and velocity tensors. Obtained outcomes allowed to compare the existing main crack systems on the both fold limbs with seismic measurements. Eventually we have shown that seismic measurements are useful tool to study the cracks anisotropy in rocks inaccessible for direct observations., Iwona Stan-Kleczek, Katarzyna Sutkowska, Dominika Stan and Mikołaj Zolich., and Obsahuje bibliografické odkazy
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
399. The Sudetic Marginal Fault: a young morphophotectonic feature at the NE margin of the Bohemian Massif, Central Europe
- Creator:
- Badura, Janusz, Zuchiewicz, Witold, Štěpančiková, Petra, Przybylski, Bogusław, Kontny, Bernard, and Cacoń, Stefan
- Format:
- print, bez média, and svazek
- Type:
- article, články, model:article, and TEXT
- Subject:
- Geologie. Meteorologie. Klimatologie, geodynamika, geodynamics, Polsko jihozápadní, Čechy severovýchodní (Česko), Poland, Bohemia, Northeastern (Czechia), morphotectonics, digital elevation models, drainage basin parameters, Sude tic Marginal Fault, 7, and 551
- Language:
- English
- Description:
- We analysed a nearly 133-km-long portion of the Sudetic Marginal Fault (SMF) in Poland (99.7 km) and the Czech Republic (33.8 km), comprised between Złotoryja in the NW and Jesenik in the SE. The fault trace has been subdivided into fifteen segments showing different orientation (N29°W to N56°W, and even N111°W SE of Złoty Stok), geological setting, length (8.8-22.9 km in Poland and 1.4-7.5 km in the Czech Republic), and height of the fault- and fault-line scarps (5-75 m to 200-360 m). Orientation of the entire fault trace approaches N41° W, and the mountain front sinuosity amounts to 1.051. Individual fault segments bear a flight of two to five tiers of triangular facets, showing differentiated state of preservation and degree of erosional remodelling. The highest triangular facets are confined to Rychlebské (Złote) and Sowie Mts. This tiering points to at least five episodes of uplift of the SMF footwall, starting shortly after 31 Ma, i.e. after basalts of the Sichów Hills area were displaced by the fault, and most probably postdating 7-5 Ma time interval, during which rapid cooling and exhumation of the Sowie Góry Mts. massif took place. Morphometric parameters of 244 small catchment areas of streams that dissect the fault scarp include, i.a. elongation, relief, and average slope of individual catchment areas, together with values of the valley flo or width to valley height ratios. These figures point to moderate tectonic activity of the SMF and allow us to conclude about Quaternary uplift, particularly important in the Sowie and Rychlebské (Złote) segments., Janusz Badura, Witold Zuchiewicz, Petra Štěpančiková, Bogusław Przybylski, Bernard Kontny and Stefan Cacoń., and Obsahuje bibliografické odkazy
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
400. The suspended magnetic separator with large blocks from NdFeB magnets and its long term technological tests
- Creator:
- Žežulka, Václav and Pavel Straka
- Format:
- print, bez média, and svazek
- Type:
- article, články, model:article, and TEXT
- Subject:
- Geologie. Meteorologie. Klimatologie, magnetické obvody, magnetic circuits, technological innovation, magnetic separation, magnetic separators, permanent NdFeB magnets, 7, and 551
- Language:
- English
- Description:
- The article presents a separator whose magnetic circuit is comprised of large blocks from permanent NdFeB magnets and the knowledge gained from its assembly. In the separation zone of this separator, significantly higher values of magnetic induction were reached in comparison with a similar circuit with ferrite magnets. The results of the long-term comparative technological tests are provided of this separator when used in an industrial plant for the separation of undesirable ferromagnetic admixtures and objects (tramp iron) from raw materials for tile production. Throughout these tests, the fundamental influence of the value of magnetic induction in the separation zone on the amount of the captured magnetic fraction was confirmed and high efficiency of the new separator proven., Václav Žežulka and Pavel Straka., and Obsahuje bibliografii
- Rights:
- http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public