A comparative study on seismic response of two unstable rock slopes within same tectonic setting but different activity level

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F17%3A00479851" target="_blank" >RIV/67985530:_____/17:00479851 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1093/gji/ggx376" target="_blank" >http://dx.doi.org/10.1093/gji/ggx376</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/gji/ggx376" target="_blank" >10.1093/gji/ggx376</a>

Result language

angličtina

Original language name

A comparative study on seismic response of two unstable rock slopes within same tectonic setting but different activity level

Original language description

In this study, the seismic response of two slope instabilities is investigated with seismicnambient vibration analysis. Two similar sites have been chosen: an active deep-seated slopeninstability at Cuolm da Vi and the geologically, structurally and morphologically similar, butnpresently not moving Alp Caschl`e slope. Both slopes are located at the upper Vorderrheintaln(Canton Graub¨unden, Switzerland). Ambient vibrations were recorded on both slopes andnprocessed by time–frequency polarization and site-to-reference spectral ratio analysis. Thendata interpretation shows correlations between degree of disintegration of the rock mass andnamplification. However, the ambient vibration analysis conducted, does not allow retrieving anresonance frequency that can be related to the total depth of the instability of Cuolm da Vi.nEven though seismic waves can be hardly traced in rock instabilities containing open fractures,nit was possible to retrieve a dispersion curve and a velocity profile from the array measurementnat Cuolm da Vi due to the high level of disintegration of the rock material down to a depthnof about 100 m. From the similar amplification pattern at the two sites, we expect a similarnstructure, indicating that also the slope at Alp Caschl`e was active in the past in a similar mannernas Cuolm da Vi. However, a smoother increase of amplification with frequency is observed atnAlp Caschl`e, which might indicate less disintegration of the rock mass in a particular depthnrange at this site, when comparing to Cuolm da Vi where a high level of disintegration isnobserved, resulting from the high activity at the slope.n

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10507 - Volcanology

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Geophysical Journal International

ISSN

0956-540X

e-ISSN

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Volume of the periodical

211

Issue of the periodical within the volume

3

Country of publishing house

GB - UNITED KINGDOM

Number of pages

21

Pages from-to

1428-1448

UT code for WoS article

000416507600010

EID of the result in the Scopus database

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