Single- and multi- component inversion of Rayleigh waves acquired by a single 3-component geophone: an illustrative case study

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F17%3A00482504" target="_blank" >RIV/67985891:_____/17:00482504 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.13168/AGG.2017.0024" target="_blank" >http://dx.doi.org/10.13168/AGG.2017.0024</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.13168/AGG.2017.0024" target="_blank" >10.13168/AGG.2017.0024</a>

Result language

angličtina

Original language name

Single- and multi- component inversion of Rayleigh waves acquired by a single 3-component geophone: an illustrative case study

Original language description

Rayleigh wave dispersion can occur according to complex mode excitation such that the interpretation of the phase or group velocity spectra can be erroneous thus leading to wrong reconstruction of the subsurface shear-wave velocity profile. In this paper, we present a case study solved by considering the holistic analysis of the Rayleigh waves recorded by a single three-component (3C) geophone and inverted by considering the group-velocity spectra of the radial and vertical components together with the Radial-to-Vertical Spectral Ratio (RVSR) and the RPM (Rayleigh-wave Particle Motion) frequency curve. In order to test the performance of the considered methodologies, we intentionally considered a complex site characterized by a high level of background noise and with a limited space to perform the investigation. In addition, passive data collected by the same 3C geophone are used to compute the Horizontal-to-Vertical Spectral Ratio (HVSR). Due to the vibrations produced by a nearby excavator, in order to obtain a meaningful HVSR we selected only a small portion of the recorded data. Computed HVSR is then jointly inverted with the active data to further validate the retrieved subsurface model and obtain information about the shear-wave velocities of the deeper layers. Altogether, four different inversion strategies are pursued and the obtained VS profiles compared also with the data available from local penetrometer test and borehole information.

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

Acta geodynamica et geomaterialia

ISSN

1214-9705

e-ISSN

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Volume of the periodical

14

Issue of the periodical within the volume

4

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

14

Pages from-to

431-444

UT code for WoS article

000416969900006

EID of the result in the Scopus database

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