000010925 001__ 10925
000010925 005__ 20141205155817.0
000010925 04107 $$aeng
000010925 046__ $$k2008-10-12
000010925 100__ $$aMavroeidis, George P.
000010925 24500 $$aThe Great 1964 Prince William Sound, Alaska, Earthquake: Estimation of Strong Ground Motion

000010925 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010925 260__ $$b
000010925 506__ $$arestricted
000010925 520__ $$2eng$$aWe are generating physically plausible near-field synthetic ground motions for the Great 1964 Prince William Sound, Alaska, earthquake compatible with available seismological data, tectonic information and eyewitness accounts. The objectives of this study are summarized as follows: (a) Simulation of the low-frequency (f < 0.03Hz) strong ground motions on selected locations and on a dense grid of observation points extending over the shallow dipping causative fault of the 1964 Alaska earthquake. In order to accomplish this task, we are utilizing the slip model proposed by Johnson et al. (1996) based on a joint inversion of tsunami waveforms and geodetic data. The calculations are carried out using the discrete wavenumber representation method and the generalized transmission and reflection coefficient technique; (b) Reconstruction of the strong ground motion time histories and response spectra that the city of Anchorage experienced during the 1964 Alaska earthquake. The low-frequency (f < 0.03Hz) ground motions are generated using the methodology described previously. The intermediate-frequency (0.03Hz < f < 0.50Hz) ground motions are simulated by convolving Green’s functions generated by the discrete wavenumber representation method with far-field radiation pulses of circular cracks. The high-frequency (0.5Hz < f < 8.0Hz) ground motions are simulated using the stochastic modeling approach. The three independently derived ground motion components are then properly combined to generate synthetic broadband ground motion time histories and response spectra for the city of Anchorage due to the 1964 Prince William Sound earthquake; and (c) Validation of the synthetic strong ground motions for the 1964 Alaska earthquake against observed tectonic deformation, ground motion estimates inferred by descriptions of structural damage, and eyewitness accounts. In summary, the present study provides synthetic time histories and response spectra for engineering applications compatible with all available information pertaining to the 1964 Prince William Sound earthquake. It should be noted however that the generated strong ground motions are not necessarily unique, nor reflect the entire uncertainty that characterizes the problem under investigation.

000010925 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010925 653__ $$a1964 Alaska earthquake, ground motion simulation, deterministic modeling, stochastic modeling, synthetic time histories, synthetic response spectra, subduction zone

000010925 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010925 720__ $$aMavroeidis, George P.$$iZhang, Bin$$iDong, Gang$$iPapageorgiou, Apostolos S.$$iDutta, Utpal$$iBiswas, Niren
000010925 8560_ $$ffischerc@itam.cas.cz
000010925 8564_ $$s6130486$$uhttps://invenio.itam.cas.cz/record/10925/files/03-01-0028.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 03-01-0028.
000010925 962__ $$r9324
000010925 980__ $$aPAPER