000011574 001__ 11574
000011574 005__ 20141205155924.0
000011574 04107 $$aeng
000011574 046__ $$k2008-10-12
000011574 100__ $$aScherer, Raimar J.
000011574 24500 $$aNon-Stationary Analysis of Bam 2003 Earthquake Record

000011574 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011574 260__ $$b
000011574 506__ $$arestricted
000011574 520__ $$2eng$$aStrong ground motion is widely investigated by methods designed for stationary processes, as are power and Fourier or response spectra. In fact, it is a highly non-stationary phenomenon, whose characteristics are strongly linked to a theoretically well understood, but practically poorly apprehensible physical background. The catastrophic 2003 Bam, Iran, Earthquake has been analysed by others from seismological and engineering aspects, but frequency related parameters as well as non-stationary characteristics of this event have not been investigated so far. In this paper, we will investigate non-stationary properties of local strong motion by means of Evolutionary Power Spectra as well as by Time-dependent Principal Correlation Axes (TPCA) – a family of methods for local strong motion analysis developed by Bretschneider & Scherer (2000a 2000b, 2004, 2006), similar to well-known Principal Component Analysis. We use these methods to identify major wave phases and estimate the directions of motion as well as other specific characteristics of the corresponding wave trains. The findings for the strong motion record at Bam are then discussed with respect to source dynamics. Our findings on the faulting process are in very good agreement to those from aftershock analysis by Nakamura et al. (2005).

000011574 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011574 653__ $$aBam Earthquake, Seismic Waves, Evolutionary Spectrum, Principal Correlation Axes, TPCA

000011574 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011574 720__ $$aScherer, Raimar J.$$iZahedi Khameneh, Amin$$iBretschneider, Jörg
000011574 8560_ $$ffischerc@itam.cas.cz
000011574 8564_ $$s1811666$$uhttps://invenio.itam.cas.cz/record/11574/files/02-0026.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 02-0026.
000011574 962__ $$r9324
000011574 980__ $$aPAPER