000019625 001__ 19625
000019625 005__ 20170118182329.0
000019625 04107 $$aeng
000019625 046__ $$k2017-01-09
000019625 100__ $$aAnderson, John
000019625 24500 $$aWave Propagation and Source Models Compatible With Strong Motion Applications

000019625 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019625 260__ $$b
000019625 506__ $$arestricted
000019625 520__ $$2eng$$aThe goal of this project is to generate realistic strong motion synthetic seismograms at distances of engineering significance, with emphasis on parameterizing the models with variables that are in standard use by seismologists. This approach is transferable to new regions, where strong motion data are sparse. Wave propagation is approximated with thin, flat, attenuating layers to approximate the local velocity gradient found by exploration seismology. The method produces seismograms with appropriately-polarized P-waves, S-waves, and surface waves. The attenuation model has high values of Q in the crustal waveguide (e.g. >5 km deep) to reproduce the distance dependence of the spectral amplitudes and of the spectral decay parameter (kappa), and low values of Q in shallow soil layers to reproduce the values of kappa extrapolated to zero distance (kappa-0). The application we describe here simulates a M7.65 earthquake, approximating the southern end of where the 1857 rupture of the San Andreas fault passed Lovejoy Buttes with about 4 m of slip. Precarious rocks at Lovejoy Buttes mostly appear old enough that they survived the 1857 earthquake. Within the range of observed physical values for the input parameters, we can generate synthetic seismograms that topple very few of these rocks, and others that topple most of them. Thus calibrating with precarious rocks, the composite source model has the potential to explore source physics parameters as well as to provide realistic, constrained ground motions from future great earthquakes.

000019625 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019625 653__ $$aSeismology, strong ground motion, synthetic time histories, ground motion models, kappa, precarious rocks

000019625 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019625 720__ $$aAnderson, John$$iBrune, Richard$$iBrune, James$$iBiasi, Glenn
000019625 8560_ $$ffischerc@itam.cas.cz
000019625 8564_ $$s1030128$$uhttps://invenio.itam.cas.cz/record/19625/files/4023.pdf$$yOriginal version of the author's contribution as presented on USB, paper 4023.
000019625 962__ $$r16048
000019625 980__ $$aPAPER