Abstract
Seismic hazard of the territory of Slovenia is estimated using a deterministic approach based on the computation of complete synthetic seismograms. The input data are the catalogues of earthquakes and fault plane solutions for Slovenia and surrounding regions. Structural models are defined based on available seismological and geophysical information, but are mainly constrained by surface-wave dispersion and 3-D tomographic modelling of the upper crust. Seismogenic zones are delineated considering geotectonic characteristics, fault plane solutions and distribution of earthquake hypocentres. Outside Slovenia seismogenic zones are extended up to distances from which they can considerably influence seismic hazard estimates.
Synthetic seismograms are computed using the “receiver” structure along the entire path by normal mode summation (up to 1 Hz) for receiver sites on a 0.2 × 0.2 degrees grid and scaled to the magnitude of the earthquake allowing for spectral falloff. At each site the maximum value of horizontal velocity, horizontal displacement and design ground acceleration are considered as hazard parameter. The highest values are obtained for western Slovenia where the hazard is controlled by the strongest earthquake in the catalogue, the “Idrija” event of March 26, 1511.
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Živčić, M., Suhadolc, P., Vaccari, F. (2000). Seismic Zoning of Slovenia Based on Deterministic Hazard Computations. In: Panza, G.F., Radulian, M., Trifu, CI. (eds) Seismic Hazard of the Circum-Pannonian Region. Pageoph Topical Volumes. Birkhäuser, Basel. https://doi.org/10.1007/978-3-0348-8415-0_10
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DOI: https://doi.org/10.1007/978-3-0348-8415-0_10
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