000018517 001__ 18517
000018517 005__ 20170118182226.0
000018517 04107 $$aeng
000018517 046__ $$k2017-01-09
000018517 100__ $$aMazzieri, Ilario
000018517 24500 $$aPshae (Probabilistic Seismic Hazard Enhanced): the Case of Santiago in Chile and Istanbul

000018517 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018517 260__ $$b
000018517 506__ $$arestricted
000018517 520__ $$2eng$$aThe Probabilistic Seismic Hazard Analysis (PSHA) only relying on ground motion prediction equations (GMPEs) tends to be insufficiently constrained at short distances and data only partially account for the rupture process, seismic wave propagation and three-dimensional (3D) complex configurations. Given a large and representative set of ground shaking scenarios from 3D physics-based numerical simulations, analyzing the resulting database from a statistical point of view and implementing the results as a generalized attenuation function (GAF) into the classical PSHA might be an appealing way to deal with this problem [1]. Nonetheless, the limited amount of computational resources or time available tend to pose substantial constraints to a broad application of the previous method. Furthermore, the method is only partially suitable for taking into account the spatial correlation of ground motion as modelled by each forward physics-based simulation (PBS). In this context, we envision a streamlined and novel approach for enhanced PSHA (“PSHAe”) in large urban areas, alternative to the previous method, based on the integration into the probabilistic framework of a limited number of deterministic scenarios, being the latter wisely chosen and associated to a probability of occurrence. The experience gathered in the past year regarding 3D modelling of seismic wave propagation in complex alluvial basin (see e.g.: [2], [3] and [4]) allowed us to enhance the choice of simulated scenarios in order to explore the variability of ground motion, preserving the full spatial correlation necessary for risk modelling. 3D numerical modelling of scenarios occurring along the North Anatolian Fault in the proximity of Istanbul are carried out through the spectral element code SPEED (http://speed.mox.polimi.it). The results are introduced in a PSHA based code, exploiting the capabilities of this methodology.

000018517 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018517 653__ $$aphysics-based earthquake scenario; high-performance computing in elastodynamics; reinsurance policy in seismic risk mitigation

000018517 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018517 720__ $$aMazzieri, Ilario$$iPaolucci, Roberto$$iKaeser, Martin$$iAllmann, Alexander$$iInfantino, Maria$$iSmerzini, Chiara$$iStupazzini, Marco
000018517 8560_ $$ffischerc@itam.cas.cz
000018517 8564_ $$s1169472$$uhttps://invenio.itam.cas.cz/record/18517/files/1631.pdf$$yOriginal version of the author's contribution as presented on USB, paper 1631.
000018517 962__ $$r16048
000018517 980__ $$aPAPER