000019858 001__ 19858
000019858 005__ 20170118182339.0
000019858 04107 $$aeng
000019858 046__ $$k2017-01-09
000019858 100__ $$aGarcia, Manuel
000019858 24500 $$aImproved Site Characterization for Enhanced Seismic Analysis of Rock Slopes

000019858 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019858 260__ $$b
000019858 506__ $$arestricted
000019858 520__ $$2eng$$aFor a proper risk assessment it is necessary to consider all parameters and variables that play an important role in a particular phenomenon. For the case of co-seismic rock slides, we believe that current methodologies for stability analysis do not accomplish that goal, given the lack of information in their models, which leads to uncertainties in risk analysis. It has been evidenced that site effects may have an important role on potentially unstable slopes [1, 2, 3, 4] and that also depth changes of shear wave velocity, and three-dimensional effects of this same parameter generate significant effects on seismic amplification on slopes [5]. Using ambient vibration records this work combines different techniques in order to characterize a sandstone landslide occurred on the Maule earthquake, Chile, 2010. Passive seismic tomography based on noise cross-correlations is used to map lateral and vertical changes in the shear wave velocity of the surficial soil layers. Horizontal-to-Vertical spectral ratios, are used to estimate the predominant Eigen frequency of the system and of the upper layers of the slope. The used methodologies proved to be a reliable source of information, retrieving inner heterogeneities and dynamic properties which improves characterization, and have probably a significant influence on the dynamic response and stability.

000019858 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019858 653__ $$aRock Slope Stability, shear-wave velocity structure

000019858 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019858 720__ $$aGarcia, Manuel$$iPasten, Cesar$$iMoya, Sebastian$$iSepúlveda, Sergio$$iQuiroz, Jose$$iMontalva, Gonzalo
000019858 8560_ $$ffischerc@itam.cas.cz
000019858 8564_ $$s585450$$uhttps://invenio.itam.cas.cz/record/19858/files/4561.pdf$$yOriginal version of the author's contribution as presented on USB, paper 4561.
000019858 962__ $$r16048
000019858 980__ $$aPAPER