000011733 001__ 11733
000011733 005__ 20141205155941.0
000011733 04107 $$aeng
000011733 046__ $$k2008-10-12
000011733 100__ $$aStrasser, Fleur O.
000011733 24500 $$aEstimating Ground-Motion Variability: Issues,Insights & Challenges

000011733 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011733 260__ $$b
000011733 506__ $$arestricted
000011733 520__ $$2eng$$aThe variability (sigma) associated with empirical ground-motion prediction equations has a significant impact on the results of seismic hazard analysis, and in some cases represents the main source of uncertainty. Consequently, numerous attempts have been made at reducing the value of sigma, mostly without success. The root of the problem lies in the fact that the models that are fitted to the data during the regression process are highly idealised with respect to the physical processes actually taking place during the generation and propagation of seismic waves. Assumptions regarding the functional form and measurement errors in both the predicted and the explanatory variables might also contribute to the variability, but their impact generally remains marginal. The present paper reviews the key methodological aspects involved in the estimation of sigma, with the aim of identifying the approaches that are the most promising in terms of reducing the value of sigma.

000011733 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011733 653__ $$aSigma, Variability, Uncertainty, Ground Motions, Seismic Hazard

000011733 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011733 720__ $$aStrasser, Fleur O.$$iBommer, Julian$$iAbrahamson, Norman A.
000011733 8560_ $$ffischerc@itam.cas.cz
000011733 8564_ $$s209557$$uhttps://invenio.itam.cas.cz/record/11733/files/07-0070.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 07-0070.
000011733 962__ $$r9324
000011733 980__ $$aPAPER