engleski

Application of Horizontal‐to‐Vertical Spectral Ratio (HVSR) method for estimation of local site effects in Varaždin County (NW Croatia)

Varaždin County is located in the northwestern Croatia and belongs to the Varaždin-Ivanščica- Kozjansko epicentral area where moderate to strong 𝑀_𝐿≥3.5 earthquakes occurred in the past. One of the most important and the encountered problems in earthquake engineering practice is the evaluation of the local ground response to predict the site amplification in surface ground motions (due to the specific geological site characteristics, geometrical features of the soil deposits and the surface topography). This research presents estimation of local site effects parameters ; fundamental soil frequencies, HVSR amplitudes and bedrock depths from the application of HVSR method in three specific local geological sites in Varaždin County: City of Varaždin, City of Ivanec and historical Trakošćan Castle site.

Horizontal-to-Vertical Spectral Ratio, local site effects, fundamental frequency, HVSR amplitude, bedrock depth

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