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  • 1 Central Laboratory of Seismic Mechanics and Earthquake Engineering 1113 Sofia, Acad. G. Bonchev St., Bl. 3., Bulgaria
  • 2 Central Laboratory of Seismic Mechanics and Earthquake Engineering 1113 Sofia, Acad. G. Bonchev St., Bl. 3., Bulgaria
  • 3 University of Trieste, Department of Earth Sciences Italy
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A deterministic analytical procedure for ground motion modelling, combining both modal summation and mode coupling techniques has been implemented to obtain synthetic seismic signals at Russe, NE Bulgaria, due to  one of the strongest Vrancea intermediate-depth earthquakes, which occurred during the last century, May  30, 1990. The frequency content of the synthetic signals in different frequency ranges, up to 1 and 2 Hz, has been studied separately. The results of this study, i.e. time histories and related ground motions parameters, can be used for different earthquake engineering analyses, e.g. structural performance assessments.

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