Abstract
The accelerogram of a strong ground motion represents the detailed characteristics of an earthquake and contains a large number of data both for earthquake engineers and seismologists. It shows not only the intensity, the frequency content and the duration of the strong ground motion, but also data referring to source origin, wave propagation mechanism, geological and site conditions at the recording site and its closer surrounding. Therefore, recently, accelerograms analysis has become a widely accepted method for fundamental investigations referring to understanding the background of the seismic waves generation and propagation mechanism and investigation of the strong ground motion nature and the parameters defining the ground motion for the needs of seismic resistant design.
Presented in this paper are the results from the nonstationary analysis of the horizontal components of ground motion records obtained during the Montenegro earthquake of 15 April 1979. For the purpose of the analysis, the physical spectra concept was applied, since it enables simultaneous investigation of the time varying nature of the amplitude and the frequency content of the recorded ground motion. The application of the physical spectra for the design of a realistic synthesized accelerogram is also presented.
Similar content being viewed by others
References
CSEM: 1979,Determination hypocentrales.
Kociaj, S.: 1980, On the main characteristics of the focus of the earthquake of 15 April 1979, derived from instrumental data, inThe Earthquake of 15 April 1979 and the Elimination of Its Consequences, Academy of Sciences of the PSR of Albania, Seismoligical Center, Tirana, pp. 69–91.
Manic, M., Olumceva, T., and Stojkovic, M: 1986, Strong gound motion characteristics of the 15 April 1979 Montenegro earthquake in the epicentral area,Proc. 8th ECEE, Lisbon, Vol. 1, Topic 3.2, pp. 73–80.
Manic, M.: 1987, Analysis of the ground acceleration records obtained during the 15 April 1979 Montenegro earthquake,Proc. 5th Canadian Conf., Earth. Eng., Ottawa, pp. 655–664.
Mark, W. D.: 1970, Spectral analysis of the convolution and filtering of nonstationary stochastic processes,J. Sound Vibration 11(1), 19–63.
Page, Ch. H.: 1952, Instantaneous power spectra,J. Applied Phys. 23(1), 103.
Peterschmitt, E.: 1980, The destructive earthquake of 15 April 1979, Extension of the seismic activity, inThe Earthquake of 15 April 1979 and the Elimination of Its Consequences, Academy of Sciences of the PSR of Albania, Seismoligical Center, Tirana, pp. 121–134.
Petrovski, D., Naumovski, N., and Stamatovska, S.: 1984, Corrected accelerograms and integrated ground velocity and displacement curve,Bull. Strong Motion Earth. Acc. No. 1, IEES, University ‘Kiril and Metodij’, Skopje.
Priestley, M. B.: 1965, Evolutionary spectra and non-stationary processes,J. Royal Statist. Soc. Sec. B., No. 2, 204–237.
Radulovic, V. and Glavatovic, B.: 1989, Seismological, geological and other types of investigation of the earthquake occurred on 15 April 1979 for the need of the reconstruction and building of the damaged area (in Serbocroatian),Experience from elimination of the consequences from the catastrophic earthquake in Montenegro, Cetinje 1, 1–22.
Sabetta, F., Masiani, R., and Giuffre, A.: 1986, Frequency nonstationarity in Italian strong motion accelerograms,Proc. 8th ECEE, Lisbon, Vol. 1, Topic 3.2, 25–32.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Manic, M. Analysis of nonstationary properties of ground motion recorded during the Montenegro earthquake of 15 April 1979. Nat Hazards 10, 123–138 (1994). https://doi.org/10.1007/BF00643447
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00643447