Ambient noise measurements to constrain the geological structure of the Güevéjar landslide (S Spain)

The reactivation of very large landslides may cause severe damage to society. Its prevention and management requires detailed information on the geometry and structure of these landslides, but the use of standard techniques (boreholes) may be prohibitive from an economic point of view. To overcome t...

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Autores: Delgado, J., Galiana Merino, J.J., García Tortosa, F.J., Garrido, J., Lenti, L., Martino, S., Peláez, J.A., Rodríguez Peces, M.J., Sanz de Galdeano, C., Soler Llorens, J.L.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:España
Institución:Universidad de Jaén
Repositorio:RUJA. Repositorio Institucional de la Producción Científica de la Universidad de Jaén
OAI Identifier:oai:ruja.ujaen.es:10953/6837
Acceso en línea:https://doi.org/10.3390/app11041454
https://hdl.handle.net/10953/6837
Access Level:acceso abierto
Palabra clave:Landslide
Geophysical prospecting
Ambient noise
f-k technique
HVSR
55
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spelling Ambient noise measurements to constrain the geological structure of the Güevéjar landslide (S Spain)Delgado, J.Galiana Merino, J.J.García Tortosa, F.J.Garrido, J.Lenti, L.Martino, S.Peláez, J.A.Rodríguez Peces, M.J.Sanz de Galdeano, C.Soler Llorens, J.L.LandslideGeophysical prospectingAmbient noisef-k techniqueHVSR55The reactivation of very large landslides may cause severe damage to society. Its prevention and management requires detailed information on the geometry and structure of these landslides, but the use of standard techniques (boreholes) may be prohibitive from an economic point of view. To overcome these difficulties, geophysical techniques are of special interest because they allow for studying very large areas at a reasonable cost. In this paper, we present a case study wherein the analysis of ambient noise allowed us to produce a model of a large landslide near Granada (southern Spain). The geometry and location of the failure zone, as well as the assessment of the state of involved materials, were estimated by combining two available boreholes and different geophysical techniques (downhole tests and the spectral analysis of ambient noise, horizontal to vertical spectral ratios (HVSR) and the frequency-wave number (f-k) methods). The results have allowed us to differentiate between values within the landslide mass with respect to those of stable materials, and to perform for the first time a comprehensive geological model of this unstable mass. Differences were also observed within the landslide mass (earth flow vs. slide zones), which are attributed to differences in the degree of alteration and the disturbance of the internal structure of materials constituting the landslide mass. These results show that techniques based on the measurement of ambient noise are of special interest for studying very large, highly remolded landslide masses.This study was funded by the EU (FEDER), by the Secretaría de Estado de Investigación, Desarrollo e Innovación of the Spanish government (projects CGL2015-65602-R and CGL2016-77688-R), by the Junta de Andalucía (project GGI3002IDIN), the Programa Operativo FEDER Andalucía 2014–2020—call made by the University of Jaén 2018, and by Research Groups VIGROB-184 and VIGROB-116 (University of Alicante).MDPI202620262021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://doi.org/10.3390/app11041454https://hdl.handle.net/10953/6837reponame:RUJA. Repositorio Institucional de la Producción Científica de la Universidad de Jaéninstname:Universidad de JaénInglésApplied Sciences-BaselCC0 1.0 Universalhttp://creativecommons.org/publicdomain/zero/1.0/info:eu-repo/semantics/openAccessoai:ruja.ujaen.es:10953/68372026-06-24T12:41:07Z
dc.title.none.fl_str_mv Ambient noise measurements to constrain the geological structure of the Güevéjar landslide (S Spain)
title Ambient noise measurements to constrain the geological structure of the Güevéjar landslide (S Spain)
spellingShingle Ambient noise measurements to constrain the geological structure of the Güevéjar landslide (S Spain)
Delgado, J.
Landslide
Geophysical prospecting
Ambient noise
f-k technique
HVSR
55
title_short Ambient noise measurements to constrain the geological structure of the Güevéjar landslide (S Spain)
title_full Ambient noise measurements to constrain the geological structure of the Güevéjar landslide (S Spain)
title_fullStr Ambient noise measurements to constrain the geological structure of the Güevéjar landslide (S Spain)
title_full_unstemmed Ambient noise measurements to constrain the geological structure of the Güevéjar landslide (S Spain)
title_sort Ambient noise measurements to constrain the geological structure of the Güevéjar landslide (S Spain)
dc.creator.none.fl_str_mv Delgado, J.
Galiana Merino, J.J.
García Tortosa, F.J.
Garrido, J.
Lenti, L.
Martino, S.
Peláez, J.A.
Rodríguez Peces, M.J.
Sanz de Galdeano, C.
Soler Llorens, J.L.
author Delgado, J.
author_facet Delgado, J.
Galiana Merino, J.J.
García Tortosa, F.J.
Garrido, J.
Lenti, L.
Martino, S.
Peláez, J.A.
Rodríguez Peces, M.J.
Sanz de Galdeano, C.
Soler Llorens, J.L.
author_role author
author2 Galiana Merino, J.J.
García Tortosa, F.J.
Garrido, J.
Lenti, L.
Martino, S.
Peláez, J.A.
Rodríguez Peces, M.J.
Sanz de Galdeano, C.
Soler Llorens, J.L.
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Landslide
Geophysical prospecting
Ambient noise
f-k technique
HVSR
55
topic Landslide
Geophysical prospecting
Ambient noise
f-k technique
HVSR
55
description The reactivation of very large landslides may cause severe damage to society. Its prevention and management requires detailed information on the geometry and structure of these landslides, but the use of standard techniques (boreholes) may be prohibitive from an economic point of view. To overcome these difficulties, geophysical techniques are of special interest because they allow for studying very large areas at a reasonable cost. In this paper, we present a case study wherein the analysis of ambient noise allowed us to produce a model of a large landslide near Granada (southern Spain). The geometry and location of the failure zone, as well as the assessment of the state of involved materials, were estimated by combining two available boreholes and different geophysical techniques (downhole tests and the spectral analysis of ambient noise, horizontal to vertical spectral ratios (HVSR) and the frequency-wave number (f-k) methods). The results have allowed us to differentiate between values within the landslide mass with respect to those of stable materials, and to perform for the first time a comprehensive geological model of this unstable mass. Differences were also observed within the landslide mass (earth flow vs. slide zones), which are attributed to differences in the degree of alteration and the disturbance of the internal structure of materials constituting the landslide mass. These results show that techniques based on the measurement of ambient noise are of special interest for studying very large, highly remolded landslide masses.
publishDate 2021
dc.date.none.fl_str_mv 2021
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://doi.org/10.3390/app11041454
https://hdl.handle.net/10953/6837
url https://doi.org/10.3390/app11041454
https://hdl.handle.net/10953/6837
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Applied Sciences-Basel
dc.rights.none.fl_str_mv CC0 1.0 Universal
http://creativecommons.org/publicdomain/zero/1.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv CC0 1.0 Universal
http://creativecommons.org/publicdomain/zero/1.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:RUJA. Repositorio Institucional de la Producción Científica de la Universidad de Jaén
instname:Universidad de Jaén
instname_str Universidad de Jaén
reponame_str RUJA. Repositorio Institucional de la Producción Científica de la Universidad de Jaén
collection RUJA. Repositorio Institucional de la Producción Científica de la Universidad de Jaén
repository.name.fl_str_mv
repository.mail.fl_str_mv
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