000011547 001__ 11547
000011547 005__ 20141205155921.0
000011547 04107 $$aeng
000011547 046__ $$k2008-10-12
000011547 100__ $$aSaragoni, G. Rodolfo
000011547 24500 $$aStudy of the Accelerogram Destructiveness of NAZCA Plate Subduction Earthquakes

000011547 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011547 260__ $$b
000011547 506__ $$arestricted
000011547 520__ $$2eng$$aA comprehensive and systematic study of the destructiveness of earthquakes originated by the subduction of the Nazca plate under the South American plate during the last 60 years is presented. The Nazca plate subduction is an extreme case among the world subduction types, it is characterized to be one of the youngest plate and to have the highest convergence velocity. This youth of the Nazca plate means that it has a surface with a high density of asperities, and the high convergence velocity produces the highest seismicity zone of the world. Furthermore, this high seismicity produces different types of large magnitude subduction earthquakes (Ms>7.5) along the Pacific coast of Chile and Peru every five years, which allows to estimate destructiveness with accelerograms, using an important data base. Nazca subduction accelerograms are characterized by high PGA values, larger than 0.6g and large acceleration response spectra. Despite these large values at the site of accelerographic stations, only moderate damage is observed. The study of the Nazca Plate accelerograms destructiveness capacity is done comparing their horizontal destructiveness potential factor PDH with the MSK intensity at the accelerographic station site, obtaining a good correlation between these two values. Also it is concluded that despite the high magnitude of the Nazca plate subduction earthquakes and their high peak ground acceleration, the associated macroseismic intensity values represent moderate level of damage for structures with seismic design. The intensity of zero crossings of Nazca plate accelerograms is found to be very high and it is the main reason of their moderate damage capacity.

000011547 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011547 653__ $$aDamage, Accelerogram, Intensity, Destructiveness potential factor, Subduction, Nazca, Chile, Perú.

000011547 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011547 720__ $$aSaragoni, G. Rodolfo$$iAstroza, Maximiliano$$iRuiz, Sergio
000011547 8560_ $$ffischerc@itam.cas.cz
000011547 8564_ $$s229919$$uhttps://invenio.itam.cas.cz/record/11547/files/02-0055.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 02-0055.
000011547 962__ $$r9324
000011547 980__ $$aPAPER