Seismic Hazard Assessment for Selected Real Locality in Central Europe – Critical Points of Assessment

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F14%3A43923932" target="_blank" >RIV/49777513:23210/14:43923932 - isvavai.cz</a>

Result on the web

<a href="http://www.davidpublisher.org/Public/uploads/Contribute/551df960bf6fd.pdf" target="_blank" >http://www.davidpublisher.org/Public/uploads/Contribute/551df960bf6fd.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.17265/1934-8975/2014.09.015" target="_blank" >10.17265/1934-8975/2014.09.015</a>

Result language

angličtina

Original language name

Seismic Hazard Assessment for Selected Real Locality in Central Europe – Critical Points of Assessment

Original language description

The seismic hazard value is a fundamental quantity for the seismic risk assessment and for the determination of terms of references of seismic design of important facilities as dams, chemical plants, nuclear power plants, etc. In real sites, the seismic hazard value is influenced by both, the earthquake sizes, the impacts of which in a given site may be expected, and the properties of geological structure through which seismic waves spread from earthquake foci to a given site. The seismic risk is predetermined by hazard value, distribution of assets in the given site and asset numbers and vulnerabilities. The paper describes the used procedure of hazard assessment of important sites. The attention is especially paid to the basic steps as the data collection (homogeneity level, uncertainty and vagueness), the focal region boundaries (their uncertainties and vagueness), and the maximum expected earthquake size in each focal region that must be taken into account (its uncertainty and vagueness), because they substantially influence the hazard value. Discussion is also concentrated to the attenuation that Central Europe substantially depends on the azimuth between earthquake focus and the given site. The attenuation differences are shown in seismic scenarios for individual focal regions. They are caused by focal mechanisms in near focal zone and differences in structure properties in distant zone; the boundary between near and distant zone in Central Europe is ca 2.5 h, where h is the focal depth in km. The real results are given for a real locality in Central Europe. It is shown than that great influence on hazard value is caused by great differences in azimuth attenuation curves. It is the reality that the Bohemian Massif is characterised with very low seismic attenuation in comparison with its vicinity. The following real results are presented: geological structure of near site vicinity, earthquake catalogue for Central Europe, focal regions in Central Europe, attenuation curves in Central Europe, typical earthquake isoseismals for individual focal regions, frequency graph, recurrence probability curve, etc.. The approaches used for nuclear facilities were recommended by the IAEA (International Atomic Energy Agency).

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

10700 - Other natural sciences

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů