Engineering Mechanics

International Conference

Proceedings Vol. 9 (2003)


May 11 – 15, 2003, Svratka, Czech Republic
Editors: Jiří Náprstek and Cyril Fischer

Copyright © 2003 Institute of Theoretical and Applied Mechanics, Academy of Sciences of the Czech Republic, v.v.i., Prague

ISBN 80-86246-18-3 (printed, Extended Abstracts)
ISSN 1805-8248 (printed)
ISSN 1805-8256 (electronic)

list of papers scientific commitee

Stochastic characterization of seismograms
Fischer C.
pages 78 - +7p., full text

Seismic random processes are characterized by high non-stationarity and, in most cases, by a marked variability of frequency contents. The widely used hypothesis modelling seismic signal as a simple product of stationary signal and a deterministic modulation function, consequently, is hardly ever applicable. Such assumption leads to the incorrect estimation of the frequency content, which can have a significant influence to the assessment of effects of such seismic event to structures. As a solution, the multicomponent decomposition of the non-stationary seismic record is presented. The wavelet multi-resolution analysis is used as a tool. An example of the seismic response of a simplified structure is given.

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