Naslov
Seismic hazard maps of Croatia

Autori
Herak, Marijan ; Allegretti, Ivo ; Herak, Davorka ; Ivančić, Ines ; Kuk, Krešimir ; Marić, Krešimir ; Markušić, Snježana ; Sović, Ivica

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Geophysical Challenges of the 21st Century / - Zagreb, 2011, 43-43

Skup
Geophysical Challenges of the 21st Century

Mjesto i datum
Zagreb, Hrvatska, 02.12.2011

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
Croatia; seismic hazard; maps

Sažetak
The long overdue, new seismic hazard map of Croatia has been prepared and accepted as a part of the National Annex of the Eurocode-8. Earthquake hazard is presented by the values of peak ground acceleration (PGA) expected to be exceeded on the average every 95 and 475 years. Underlying statistical analyses was based on the updated Croatian Earthquake Catalogue, which was expanded with the data for events well outside Croatian borders. The hazard computation was performed on a grid 5.5 x 5.5 km, by a zoneless, smoothed seismicity approach, with the stochastic Monte- Carlo simulation of 2.000.000 years of seismicity. The computations were performed for 6 different seismicity models, and for 6 selected attenuation relations. Epistemic uncertainties were accounted for by considering a simple logic tree with 36 branches, and by adopting the weighted median of values thus obtained. The results indicate the highest hazard to exist in Dalmatia – especially close to Ston and Dubrovnik where PGA for the return period of 475 years exceeds 0.35 g, in the greater Zagreb area, and in the Primorje coastal region. Comparison with the available hazard maps from the neighbouring countries reveals very good match in the border regions.

Izvorni jezik
Engleski

Znanstvena područja
Geologija

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