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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10507 - Volcanology

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Geophysical Journal International

ISSN

0956-540X

e-ISSN

—

Svazek periodika

211

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

21

Strana od-do

1428-1448

Kód UT WoS článku

000416507600010

EID výsledku v databázi Scopus

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