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Probabilistic Seismic Hazard Analysis for Induced Seismicity
2020In recent times, there has been increased seismicity in geologically stable basins in North America, thought to be associated with hydraulic fracturing and/or waste water disposal activities. Induced events could generate a seismic hazard higher than natural seismicity, particularly in areas with small-to-moderate natural background seismicity, leading
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Probabilistic seismic hazard analysis: Early history
Earthquake Engineering & Structural Dynamics, 2007AbstractProbabilistic seismic hazard analysis (PSHA) is the evaluation of annual frequencies of exceedence of ground motion levels (typically designated by peak ground acceleration or by spectral accelerations) at a site. The result of a PSHA is a seismic hazard curve (annual frequency of exceedence vs ground motion amplitude) or a uniform hazard ...
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A new procedure for probabilistic seismic hazard analysis
2011In the Performance-Based Seismic Design framework, the development of an appropriate “Probabilistic Seismic Hazard Analysis” which allows to statistically characterize the seismic input at the site of an engineering project becomes of crucial importance. The objective of the hazard analysis is to compute, for a given site over a given observation time,
GASPARINI, GIADA +2 more
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On Uncertainties in Probabilistic Seismic Hazard Analysis
Earthquake Spectra, 2016Probabilistic seismic hazard analysis (PSHA) is, in essence, a method to deal with uncertainty, the importance of which justifies the use of a formal and rigorous background for its study. Therefore, the purpose of this paper is to contribute to the reflections on how to correctly handle uncertainty in PSHA.
Mario Ordaz, Danny Arroyo
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Probabilistic seismic hazard analysis of Islamabad, Pakistan
Journal of Asian Earth Sciences, 2011Abstract Pakistan is prone to seismic activity, and its capital, Islamabad, is located close to the Main Boundary Thrust (MBT) fault. On October 8th, 2005 the disastrous Muzaffarabad earthquake shook Islamabad and damaged many high-rise buildings. A probabilistic seismic hazard analysis technique was used to estimate strong ground motion parameters ...
Abdul Qadir Bhatti +4 more
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Some Thoughts on Declustering in Probabilistic Seismic-Hazard Analysis
Bulletin of the Seismological Society of America, 2014Abstract In this paper, we discuss in depth, one of the basic procedures that stands behind probabilistic seismic‐hazard analysis (PSHA), that is, the declustering of the seismicity rates. First, we explore the technical, scientific, and practical motivations that led to introducing the declustering of seismicity rates.
Marzocchi, W., Taroni, M.
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Probabilistic seismic hazard analysis for a site
Nuclear Engineering and Design, 2006Traditionally, the seismic design basis ground motion has been specified by normalised response spectral shapes and peak ground acceleration (PGA). The mean recurrence interval (MRI) used to be computed for PGA only. The present work develops uniform hazard response spectra, i.e., spectra having the same MRI at all frequencies for Tarapur Atomic Power ...
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Probabilistic Seismic Hazard Analysis of Vadodara Region
2020The Vadodara region falls in seismic zone-III as per IS 1893:2016 and surrounded by highly active seismic sources. Seismicity of the Vadodara region has been determined by the evaluation of peak ground acceleration (PGA) model considering probabilistic framework.
Payal Mehta, T. P. Thaker
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Error inflation in Probabilistic Seismic Hazard Analysis
Engineering Geology, 2007Based on a consistent interpretation of earthquake occurrence as a stochastic process I demonstrate that the mathematical model of Probabilistic Seismic Hazard Analysis (PSHA) as it is in use today is inaccurate and leads to systematic errors in the calculation process.
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The Hazard in Using Probabilistic Seismic Hazard Analysis for Engineering
Environmental & Engineering Geoscience, 1998Both the deterministic and probabilistic methods of seismic hazard analysis serve necessary purposes. Probability is needed to obtain operating basis earthquakes, to perform risk analyses, to prioritize projects, and for assigning recurrence estimates to deterministic earthquakes.
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