Gamma-ray absorption and chemical composition of neovolcanic rocks     

Věra Vaňková  Vladimír Kropáček  Reviewer J. Buben 《Studia Geophysica et Geodaetica》1974,18(2):173-185

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The effect of vibrations on the accuracy of measurements with a CG-2 gravimeter     

Karel Diviš  Vladimír Tobyáš  Reviewer M. Pick 《Studia Geophysica et Geodaetica》1974,18(2):199-204

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Seismic zoning map of Czechoslovakia — version 1987     

Vít Kárník  Dana Procházková  Vladimír Schenk  Zdeňka Schenková  Ivan Brouček  Reviewer J. Zahradník 《Studia Geophysica et Geodaetica》1988,32(2):144-150

Summary A new version of the seismic zoning map of Czechoslovakia is presented mainly for use with the revised Building Code SN 730 036 (Seismic Loads on Buildings). In principle, the map contains the expected maximum intensities according to the macroseismic scale MSK-64. The map is based on all historical macroseismic observations in Czechoslovakia, as well as on models of macroseismic fields. The assessment of expected intensities has also been completed by a seismotectonic analysis. It is not feasible to relate the map to a particular time interval, i.e. to estimate the probability of expected maximum intensities, because of the unknown recurrence of extreme events on the territory of Czechoslovakia.

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Transfer impedance of a probe in a drifting plasma     

Vladimŕ Fiala  František Blahák  Reviewer G. Siráň 《Studia Geophysica et Geodaetica》1984,28(2):178-187

au un¶rt;a umu ¶rt;a na nu nauuu ¶rt;a uam mmu amm na aa. amau aa auum m mnam u mu ¶rt;a, m unam ¶rt; ¶rt;uamuu u na.  相似文献   

Short-period seismographs at průhonice in seismological practice     

Vladimír Tobyáš  Libuše Ruprechtová  Jaroslava Plomerová  Reviewer A. Zátopek 《Studia Geophysica et Geodaetica》1983,27(3):241-247

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The partial identity of the amplitude characteristics of broad-band electromagnetic seismographs     

Vladimír Tobyáš 《Studia Geophysica et Geodaetica》1967,11(2):183-193

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Urban landslide monitoring by combined use of multiple methodologies - a case study on Sv. Anton town,Slovakia     

Jaroslav Buša  Miloš Rusnák  Dávid Kušnirák  Vladimír Greif  Martin Bednarik  René Putiška 《自然地理学》2020,41(2):169-194

ABSTRACT

We employed integrated methods to assess the landslide movement in Sv. Anton town in the Western Carpathians Neogene Volcanic Field (Central Slovakia). The integrated diagnostics required study of the landslide kinematic activity by a combination of Global Navigation Satellite Systems (GNSS) and Electrical Resistivity Tomography (ERT) imaging from November 2013 to March 2015. A topographic model with 2-cm accuracy was constructed from Unmanned Aerial Vehicles (UAV) photogrammetry. Continuous spatial datasets of movement and displacement field vectors were interpolated from the measured movements over the entire study period. Although deformation studies in Slovakia have a long-term tradition, complex interdisciplinary studies in urbanized areas are still lacking. This inspired our main objectives: to identify landslide kinematics and to reconstruct and define the rates of annual landslide movement obtained from geodetic measurement at the monitoring points. Our results demonstrate how landslide integrated diagnostics contribute to the detection of slope instability, with a maximum velocity of 60.82 mm/yr during the summer period. The precipitation effects are consistent with the Sv. Anton landslide displacement acceleration, and the following increases in total monthly precipitations are staggering compared to long-term monthly averages: July precipitation increased by 175.3%, August by 203.3%, and September by 198.1%.  相似文献   

Inverting full waveforms into 1D seismic velocity model of the upper crust by neighborhood algorithm - Corinth Gulf,Greece     

Vladimír Plicka  Jiří Zahradník 《Studia Geophysica et Geodaetica》2014,58(3):388-402

We investigated inversion of full waveforms into formal 1D velocity models. ‘Formal’ means that the models are primarily intended to simulate complete seismograms close to real records, rather than to reflect the true crustal structure from the geological point of view. The method is demonstrated for a magnitude M_w 5.3 earthquake (centroid depth of 4.5 km), recorded at 8 three-component stations in the Corinth Gulf region, Greece, spanning the epicentral distance range from 15 to 102 km, and frequency range from 0.05 to 0.2 Hz. The forward problem was solved by the discrete wavenumber method, while the inversion was performed with the neighborhood algorithm. As such, not only the best-fit models, but also suites of the models almost equally well satisfying data were obtained. The best resolution was found in the topmost ～10 km. Extensive testing of the model parametrization enabled identification of the most robust features of the solution. The P- and S-wave velocities are characterized by a strong increase with depth in the topmost ～4–5 km. This part of the model can be approximated by a layer with constant velocity gradient. Compared to a previously existing model of the region, the satisfactory waveform match was extended from the maximum frequency of 0.1 Hz up to 0.2 Hz. This extension will improve calculation of the seismic source parameters in the region, e.g. determination of source time functions and slip distributions of potential future M_w > 6 events.  相似文献   

Unique documentation,analysis of origin and development of an undrained depression in a subsidence basin caused by underground coal mining (Kozinec,Czech Republic)   总被引：1，自引：0，他引：1  

Marian Marschalko  Işık Yilmaz  David Lamich  Marián Drusa  Darja Kubečková  Tomáš Peňaz  Tereza Burkotová  Vladimír Slivka  Martin Bednárik  David Krčmář  Miloš Duraj  Alena Sochorková 《Environmental Earth Sciences》2014,72(1):11-20

This article aims to explain and demonstrate the origin and development of a subsidence basin caused by coal mining as well as to point out important aspects of this phenomenon in engineering geology. Engineering geology needs to deal with a number of issues related to the origin and development of subsidence basins in areas affected by deep coal mining. An interesting case study from the Upper-Silesian Basin in the northeast of the Czech Republic near the Polish border is presented in this paper. There is a clear time chronological succession in the ground surface changes manifested by a ground subsidence gradation, both in their absolute values as well as in their spatial distribution. The phenomenon is documented by aerial photo time series, which optimally depict the origin and development of the subsidence. In the study area, there are changes in the landscape elements and it is essential to be considered in future land use plans. The marginal conditions of the Quaternary geological structure and hydrogeological conditions are responsible for an unconfined aquifer which manifests there as a water body in an undrained depression in the course of the ground subsidence.  相似文献   

Underground measurements of the seismic noise level     

Vít Kárník  Vladimír Tobyáš 《Studia Geophysica et Geodaetica》1961,5(3):231-236

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