Spatial correlation of ground motions in estimating seismic hazards to civil infrastructure

Seismic hazard from instrumentally recorded, historical and simulated earthquakes: Application to the Tibet–Himalayan region

“…random residuals for different points are assumed to be completely independent. In fact, the ground-motion correlation is not necessary for the point-wise probabilistic SHA consideration (e.g., McGuire, 2004;Sokolov and Wenzel, 2013). In this study, the hazard rate, i.e., the annual frequency of exceedance γ of some specified level y of the ground-motion parameter (PGA) at an individual point, is computed from the statistics of the earthquakes contained in the composite catalogs by counting the number N (Y N y) of PGA values Y exceeding the particular value y for the time interval considered.…”

“…the annual rate of a ground motion level exceedance in at least one site of several sites of interest located within a certain area, are required to compare PSHA results and earthquake records. A multiple-site hazard assessment assumes the consideration of dependencies (correlations) between ground-motion parameters at several sites during a particular earthquake (Sokolov and Wenzel, 2013). The ground-motion characteristics at separate sites are neither perfectly dependent (perfectly correlated) nor perfectly independent Fig.…”

Preliminary probabilistic seismic hazard assessment for the Kingdom of Saudi Arabia based on combined areal source model: Monte Carlo approach and sensitivity analyses

“…The software was developed by V. Sokolov and it has been applied in research related to seismic hazard and loss estimations including analysis of methodological problems in multiple-site hazard and loss assessment [71][72][73].…”

“…The analysis is very important for assessment of damage, loss and seismic risk for spatially distributed structures (lifelines, critical elements of network, important objects, urban areas, etc.) [24,35,42,43,58,[71][72][73]. We considered recently developed models of seismic source zones for the Arabian Peninsula and surrounding regions, and modern ground-motion prediction equations.…”

Within‐event spatial correlation of peak ground acceleration and spectral pseudo‐acceleration ordinates in the Chilean subduction zone

“…The spatial correlation of residuals of ground‐motion intensities has been extensively studied for the last 20 years 3–31 . In general, these studies combine several earthquakes for developing their models, although different authors have found a significantly large event‐to‐event variability, 12,23 even when exploring different events of the same seismic sequence 26 .…”