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When analyzing the patterns of damage in an earthquake, physical parameters of the total earthquake-site-structure system are correlated with the damage. Soil-structure interaction, the cause of damage in many earthquakes, involves the frequency-dependent response of both the soil-rock column and the structure. The response of the soil-rock column (called site amplification) is controversial because soil has strain-dependent properties that affect the way the soil column filters the input body and surface seismic waves, modifying the amplitude and phase spectra and the duration of the surface ground motion.
Additional Publication Details
SITE AMPLIFICATION OF EARTHQUAKE GROUND MOTION.
Earthquake Engineering Research Inst
El Cerrito, CA, USA
Number of Pages:
Proceedings of the Third U. S. National Conference on Earthquake Engineering.