Z. Kaláb, M. Stolárik, Institute of Geonics, Academy of Sciences, Czech Republic, B. Pandula, J. Kondela, Technical University of Košice, Institute of Geosciences, Slovakia The article summarizes experimental seismological measurements of vibration eff ects of blasting operations. During tunnel excavation can watch a variety of eff ects on the near or distant surroundings of the building. One o...

The ZZ Ceti star KUV 02464+3239 was observed over a whole season at the mountain station of Konkoly Observatory. A rigorous frequency analysis revealed 6 certain periods between 619 and 1250 seconds, with no shorter period modes present. We use the observed periods, published effective temperature and surface gravity, along with the model grid code of Bischoff-Kim, Montgomery and Winget [1] to ...

We constrain seismic properties of the inner core using various body wave observations. In the epicentral distance range of 10−70 o , our high quality measurements of the amplitude ratio of PKiKP and PcP provide a new estimate of the density contrast (0.6-0.9 g/cm 3) at the Inner Core Boundary (ICB). This estimate is compatible with a recent reevaluation of normal mode data, and thus reconciles...

Seismographic registration of vibratory earth motion was begun with an experimental torsion seismometer assembly at the laboratories of the Mount Wilson Observatory in Pasadena, California, in January, 1923. Not long af terward a second assembly was put into experimental operation at the Norman Bridge Labora to ry of Physics at the California Institute of Technology at Pasadena. Wi th many smal...

Near-source ground motion at four azimuths but constant epicentral range 1s computed from a buried circular strike-slip fault in a half-space. Particle acceleration, velocity, and displacement at each station on the free surface is computed in the frequency band 0.0 to 5.0 Hz. The assumed dislocation is denved from the Kostrov (1964) displacement function for a continuously propagating stress r...

adapts beamforming tools developed for passive sonar and seismological applications for use in AE source localization and signal discrimination analyses. Instead of relying on the relatively weak P-wave, this method uses the energy-rich Rayleigh wave and requires only a small array of 4–8 sensors. Tests on an in-service reinforced concrete structure demonstrate that the azimuth of an artificial...

Juliet Biggs,1 Eric Bergman,2 Brian Emmerson,3 Gareth J. Funning,4 James Jackson,3 Barry Parsons1 and Tim J. Wright1 1COMET, Department of Earth Sciences, University of Oxford. E-mail: [email protected] 2CIEI, Department of Physics, University of Colorado, Boulder, Colorado, 80309, USA 3COMET, Bullard Laboratories, Department of Earth Sciences, University of Cambridge 4Berkeley Seismologic...

Johann Rudi∗, Hari Sundar†, Tobin Isaac∗, Georg Stadler∗, Michael Gurnis‡, and Omar Ghattas∗§¶ ∗Institute for Computational Engineering and Sciences, The University of Texas at Austin, USA †School of Computing, The University of Utah, USA ‡Seismological Laboratory, California Institute of Technology, USA §Department of Mechanical Engineering, The University of Texas at Austin, USA ¶Jackson Scho...