A Contribution to Seismic Hazard Assessment in Croatia from Deterministic Modeling

Abstract

Some of the elements of regional seismic hazard in Croatia are assessed by computing synthetic accelerograms at a predetermined set of sites. The input dataset consists of structural models, parameters of seismic sources, and an updated earthquake catalog. Synthetic strong-motion time series for frequencies below 1 Hz are computed on a grid of sites using the modal summation technique. The long-period hazard is described by the distribution of estimated peak values of ground displacement, velocity and acceleration, while the short-period hazard is represented by the map of design ground acceleration values (DGA). The highest values of DGA exceeding 0.35 g on the base-rock level are found in the southeastern coastal part of the country, in the greater Dubrovnik area.

Seismic hazard maps based on Neo-deterministic Seismic Hazard Assessment for China Seismic Experimental Site and adjacent areas

“…It has been developed as a comprehensive multidisciplinary approach for performing scenario-based seismic hazard computations based on all available geophysical-geological-tectonic information. As a sustainable developing approach, NDSHA has been applied in many countries and regions, including Croatia (Markušić et al, 2000), northern Morocco (Vaccari et al, 2001), Egypt (El-Sayed et al, 2001, India (Parvez et al, 2003(Parvez et al, , 2017, North China (Ding et al, 2004), and North Africa (Mourabit et al, 2014). A detailed description of NDSHA has been provided in many published papers, such as Panza et al (2001), Panza et al (2012), Panza et al (2013), Panza (2017), Rugarli et al (2019a), and Panza and Bela (2020).…”

A seismological and engineering perspective on the 2016 Central Italy earthquakes

“…'model 6' of Panza et al (2012). The definition of earthquake sources is based on the same input of 'model 6': earthquake catalogue CPTI04 (Gasperini et al, 2004), integrated with the catalogues for Slovenia and Croatia (Živčić et al, 2000;Markušić et al, 2000), the ZS9 seismogenic zoning (Meletti and Valensise, 2004) and the seismogenic nodes identified by Gorshkov et al (2002Gorshkov et al ( , 2004Gorshkov et al ( , 2009. It is important to highlight that these new maps are computed starting from information contained in earlier publications deliberately excluding the evidence from this last earthquake.…”

Earthquake recurrence and seismic hazard assessment: a comparative analysis over the Italian territory

“…In the first step of cellular sources definition (discretization), earthquake epicenters reported in the catalogues (CPTI04 [8] for Italy, Zivcic et al [9] for Slovenia and Markus et al [10] for Croatia) are grouped into 0.2° × 0.2° cells, and to each cell the maximum magnitude recorded within it is assigned. A smoothing procedure is then applied to account for spatial uncertainty and for source dimensions.…”