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1
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Wiadomości Konserwatorskie
2009 Nr 26 159-165
PL System umocnień konstrukcji Ruredil X Mesh C10 przyniósł faktyczną poprawę odporności kościoła Madonna di Centurelle na skutki aktywności sejsmicznej. Trzęsienie ziemi z 6 kwietnia 2009 r., które zniszczyło 50 % wszystkich budynków (starych i nowych) w LíAquila i całej prowincji, nie uszkodziło w og[...]
EN The Ruredil X Mesh C10 structural reinforcement system effectively improved the resistance to seismic activity of the Church of the Madonna di Centurelle. The April 6 2009 earthquake that destroyed 50 % of all the buildings (old and new) in LíAquila and its province caused no damage whatsoever to th[...]
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Acta Geophysica
2013 Vol. 61, no. 4 1000--1025
EN Present paper deals with a brief review of the research carried out to develop multi-parametric gas-geochemical monitoring facilities dedicated to earthquake prediction research in India by installing a network of seismo-geochemical monitoring observatories at different regions of the country. In an[...]
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Acta Geophysica
EN Investigation of dynamical features of ambient seismic noise is one of the important scientific and practical research challenges. We investigated scaling features of the ambient noises at the Oni seismic station, Georgia, using detrended fluctuation analysis method. Data from this seismic station, [...]
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Acta Geophysica
EN The spring-block model proposed by Olami, Feder and Christensen (OFC) has several properties that are similar to those observed in real seismicity. In this paper we propose a modification of the original model in order to take into account that in a real fault there are several regions with differen[...]
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Reports on Geodesy
2000 z. 7/53 125-130
EN Weak natural seismic activity is documented from the Opava area, northern part of the Moravian-Silesian region, Czech Republic. The last more important earthquakes occurred in this region in February 20-21,1999. Following source parameters were obtained using spectral analysis of seismic signal from[...]
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Acta Geophysica
2013 Vol. 61, no. 6 1659--1676
EN Investigation of complex dynamics of ambient seismic noise remains as an important scientific research challenge. In this work we investigated dynamical features of the ambient noises at Oni seismic station, Georgia. We used stochastic model reconstruction method from measured data sets. Seismic rec[...]
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Geology, Geophysics and Environment
EN Microseismic monitoring is the observation technique of small earthquakes, called microseismic events, which occur in the ground as a result of human activities or industrial processes such as hydraulic fracturing. Hydraulic fracturing is the one of the primary technologies for improving well produ[...]
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Archives of Hydro-Engineering and Environmental Mechanics
EN The horizontal motion of the system: rigid block-accelerating subsoil is analysed, using the most simple approach. First, the method of analysis is described and illustrated for constant coefficient of friction between the block and subsoil. Then, the changing coefficient of friction is taken into a[...]
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Polish Maritime Research
2017 nr 4 116--123
EN The paper presents results of the numerical analysis of the fire damper used in ventilation systems under the earthquake loading. The research was conducted in accordance with the recommendations of the Nuclear Safety Standards Commission. The aim of the analysis was to examine the fire damper with [...]
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Acta Geophysica
EN The Fisher-Shannon information (FS) plane, defined by the Fisher information measure (FIM), and the Shannon entropy power, N x , is a robust tool for investigating the complex dynamics of time series. In the FS plane, earthquakes and quarry blasts measured in Vértes Hills (Hungary) are significantly[...]
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Acta Geophysica
EN We demonstrate that the idea of symmetropy can be used for quantification of earthquake patterns. The symmetropy can be considered as a measure of asymmetry. A pattern is richer in asymmetry when the symmetropy is smaller. The specific results of its applications are obtained as follows. In a discre[...]
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Acta Geophysica Polonica
EN The ratio of radiated seismic energy and seismic moment estimated for global sets of earthquakes does not exhibit any systematic changes with seismic moment. In contrast, for regional sets of earthquakes the ratio decreases with decreasing moment. This paper proposes a statistical relationship among[...]
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Acta Geophysica Polonica
EN Based on the mathematical equivalence between the crack field and the continuous dislocation field, we briefly review continuum theory of defects from the view point of differential geometry. Then we derive a new differential geometric equation of static gravity change for anelastic effect due to th[...]
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Acta Geophysica
EN Three seismic events in L’Aquila region and one in western Greece have been chosen for comparative analysis of two kinds of seismic motions, spin and twist. These torque components of the seismic field were detected in horizontal plane with the rotational seismometers. Homologous parts were sought i[...]
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Acta Geophysica
EN Seismic discriminants based on the spectral seismogram and spectral magnitude techniques have been tested to discriminate between three events; a nuclear explosion which took place in Lop Nor, China with mb 6.1 and two earthquakes from the closest area with mb 5.5 and 5.3, respectively. The spectral[...]
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Mining Science
2019 Vol. 26 123--145
EN In the world, people are increasingly exposed to natural hazards such as earthquakes. To this end, seismic risk mapping remains an essential topic of study in order to minimize their destructive effects. These maps are needed for both seismic risk management and for the design of infrastructure. The[...]
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Acta Geophysica
2013 Vol. 61, no. 2 311--337
EN We apply detrended fluctuation analysis (DFA) on fluxgate and search-coil data in ULF range (scales 10-90 s or 0.1-0.011 Hz) for the months January-April 2009 available from the South European GeoMagnetic Array stations: Castello Tesino (CST), Ranchio (RNC), and L’Aquila (AQU) in Italy; Nagycenk (NC[...]
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Napędy i Sterowanie
PL Konia z rzędem Czytelnikowi pisma "Napędy i Sterowanie", któremu nieznana jest Firma Bosch z jej rozległymi kompetencjami w Polsce i na świecie. W ubiegłym roku firma obchodziła kolejne urodziny, bowiem 125 lat temu Robert Bosch założył swoje przedsiębiorstwo. Już u zarania firma wspierała rozwijają[...]
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Acta Geophysica Polonica
EN From the view point of the continuum theory of defects, we consider how the generated electromagnetic field can be related to the deformation field due to dislocations and disclinations. Based on the theory of connections in the higher-order space (Kawaguchi space), the Finsler deformation theory of[...]
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Zeszyty Naukowe Politechniki Gdańskiej. Inżynieria Lądowa i Wodna
2015 Nr 3 (637) 95--103
PL Podczas wstrząsów sejsmicznych o różnym natężeniu, wielokrotnie obserwowano zjawisko zderzania się konstrukcji ze sobą sąsiadujących, co mogło prowadzić nawet do ich całkowitego zniszczenia. Na podstawie obserwacji, badań numeryczny i eksperymentalnych, stwierdzono, że przyczyną kolizji była niedost[...]
EN During moderate to strong ground motions, collisions between neighbouring structures. were repeatedly observed. This phenomenon (called pounding) between insufficiently separated structures may lead to its damages or total collapse. Based on the observations. numerical and experimental analysis, it [...]
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