000020155 001__ 20155
000020155 005__ 20170118182357.0
000020155 04107 $$aeng
000020155 046__ $$k2017-01-09
000020155 100__ $$aTao, Xiaxin
000020155 24500 $$aDirection-Dependent Analysis of Parameters for Stochastic Synthesis of Vertical Ground Motion

000020155 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000020155 260__ $$b
000020155 506__ $$arestricted
000020155 520__ $$2eng$$aFor synthesis of tridimensional ground motions, the available deterministic approach is no longer efficient in high frequency range (say, >1 Hz) for computational limitation and limited knowledge on small-scale heterogeneity in the regional crust, while the widely adopted stochastic synthesis, up to now only working for undirectional horizontal record, needs to be developed further for vertical component. A research on the direction-dependence of key seismic parameters in the stochastic method, such as stress parameter, quality factor, radiation pattern, kappa factor and site amplification, is presented in this paper to evaluate the different effects of crustal inhomogeneity on vertical and horizontal components. The result indicates that the first two are just region-specific parameters of the crust medium property and status, whereas the other three are complicatedly and strongly direction-dependent. Then, we incorporate the direction-dependent pattern based on Pulido’s research for an accurate energy distribution of wave radiated from the source, and take the difference between vertical and horizontal kappa factor and site amplification into account. Vertical ground motions for the 1994 Northridge earthquake are synthesized with these improvements, and the comparisons with the observed motions show reasonable agreement in average, which is followed by further validation to demonstrate the accordance with the recently developed vertical ground motion predication equations.

000020155 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000020155 653__ $$astochastic synthesis; vertical ground motion; Northridge earthquake; radiation pattern; site amplification

000020155 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000020155 720__ $$aTao, Xiaxin$$iCao, Zelin
000020155 8560_ $$ffischerc@itam.cas.cz
000020155 8564_ $$s480946$$uhttps://invenio.itam.cas.cz/record/20155/files/658.pdf$$yOriginal version of the author's contribution as presented on USB, paper 658.
000020155 962__ $$r16048
000020155 980__ $$aPAPER