Results 211 to 220 of about 6,848 (251)

Propagation of epistemic uncertainty in magnitude–frequency relations through PSHA using predictive distributions

Earthquake spectra, 2021
The current practice of Probabilistic Seismic Hazard Analysis (PSHA) considers the inclusion of epistemic uncertainties involved in different parts of the analysis via the logic-tree approach. Given the complexity of modern PSHA models, numerous branches
M. Ordaz, D. Arroyo
semanticscholar   +1 more source

General Concepts and PSHA Background

2017
The first step in building the PSHA model is the collection of geological, geophysical, geotechnical and seismological data from published and unpublished documents, theses, and field investigations. These data are integrated to develop a coherent interpretation of a seismotectonic framework for the study region.
Alain Pecker, Ezio Faccioli, Aybars Gurpinar, Christophe Martin, Philippe Renault   +4 more
openaire   +1 more source

Integration of Site Effects into Probabilistic Seismic Hazard Assessment (PSHA): A Comparison between Two Fully Probabilistic Methods on the Euroseistest Site

Geosciences (Switzerland), 2018
The integration of site effects into Probabilistic Seismic Hazard Assessment (PSHA) is still an open issue within the seismic hazard community. Several approaches have been proposed varying from deterministic to fully probabilistic, through hybrid ...
Claudia Aristizabal, Pierre-yves Bard, Céline Beauval   +2 more
exaly   +2 more sources

THE ROLE OF UNCERTAINTY OF MODEL PARAMETERS IN PSHA

Proceedings of the 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COMPDYN 2015), 2019
Current approaches for the seismic hazard assessment, are mainly based on the classical formulation of the probabilistic seismic hazard analysis, widely known with the acronym PSHA. This procedure is able to compute the annual rate of exceedance of a set of ground motion intensity measures at a site of interest.
Hofer L., Zanini M. A.
openaire   +2 more sources

Generalizing the Inversion-Based PSHA Source Model for an Interconnected Fault System

, 2020
This article represents a step toward generalizing and simplifying the procedure for constructing an inversion-based seismic hazard source model for an interconnected fault system, including the specification of adjustable segmentation constraints.
E. Field, K. Milner, M. Page
semanticscholar   +1 more source

Site-specific partially nonergodic PSHA for a hard-rock critical site in southern France: adjustment of ground motion prediction equations and sensitivity analysis

Bulletin of Earthquake Engineering, 2017
Gabriele Ameri, Fabrice Hollender, Vincent Perron   +2 more
exaly   +2 more sources

Site Response Effects on Partially Ergodic PSHA

GeoRisk 2011, 2011
Near surface materials play an important role in modifying seismic waves, hence the uncertainty in their properties is significant to the surface ground motion uncertainty. A partially non-ergodic approach that removes the uncertainty associated with site response from the ergodic ground motion prediction equation, and then accounts for the epistemic ...
G. A. Montalva, A. Rodriguez-Marek
openaire   +1 more source

Virtual Fault Ruptures in Area-Source Zones for PSHA: Are They Always Needed?

, 2020
Seismic source models for probabilistic seismic hazard analysis (PSHA), except when using zoneless approaches based directly on the earthquake catalog, invariably include area-source zones, even if active fault sources are modeled explicitly.
J. Bommer, V. M. Falero
semanticscholar   +1 more source

Probability in PSHA: Reply to "Comment on 'PSHA Validated by Quasi-Observational Means' by Z. Wang"

Seismological Research Letters, 2012
One of the attractions of the Monte Carlo simulation approach to seismic hazard is its conceptual simplicity and directness. What a site operator wants to know is what type of earthquake shaking his plant might possibly have to endure in its lifetime. In response, the seismologist takes all the available information on regional seismogenesis, distils ...
openaire   +1 more source

Sensitivity analysis of directivity effects on PSHA

2013
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CHIOCCARELLI, EUGENIO, IERVOLINO, IUNIO
openaire   +2 more sources