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, José, Galiana Merino, Juan José, García-Tortosa, Francisco J., Garrido, Jesús, Lenti, Luca, Martino, Salvatore, Peláez, José A., Rodríguez Peces, Martín Jesús, Sanz De Galdeano-Equiza, Carlos, Soler Llorens, Juan L.
Tipo de recurso: artículo
Fecha de publicación:2021
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/7858
Acceso en línea:https://hdl.handle.net/20.500.14352/7858
Access Level:acceso abierto
Palabra clave:550.83:551.435.2
landslide
geophysical prospecting
ambient noise
f-k technique
HVSR
Geofísica
Geodinámica
2507 Geofísica
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oai_identifier_str oai:docta.ucm.es:20.500.14352/7858
network_acronym_str ES
network_name_str España
repository_id_str
spelling Ambient Noise Measurements to Constrain the Geological Structure of the Güevéjar Landslide (S Spain)Delgado, JoséGaliana Merino, Juan JoséGarcía-Tortosa, Francisco J.Garrido, JesúsLenti, LucaMartino, SalvatorePeláez, José A.Rodríguez Peces, Martín JesúsSanz De Galdeano-Equiza, CarlosSoler Llorens, Juan L.550.83:551.435.2landslidegeophysical prospectingambient noisef-k techniqueHVSRGeofísicaGeodinámica2507 Geofísica2507 GeofísicaThe 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-wavenumber (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.MDPIUniversidad Complutense de Madrid20212021-01-0120212021-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/7858reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Atribución 3.0 Españahttps://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/78582026-06-02T12:44:21Z
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, José
550.83:551.435.2
landslide
geophysical prospecting
ambient noise
f-k technique
HVSR
Geofísica
Geodinámica
2507 Geofísica
2507 Geofísica
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, José
Galiana Merino, Juan José
García-Tortosa, Francisco J.
Garrido, Jesús
Lenti, Luca
Martino, Salvatore
Peláez, José A.
Rodríguez Peces, Martín Jesús
Sanz De Galdeano-Equiza, Carlos
Soler Llorens, Juan L.
author Delgado, José
author_facet Delgado, José
Galiana Merino, Juan José
García-Tortosa, Francisco J.
Garrido, Jesús
Lenti, Luca
Martino, Salvatore
Peláez, José A.
Rodríguez Peces, Martín Jesús
Sanz De Galdeano-Equiza, Carlos
Soler Llorens, Juan L.
author_role author
author2 Galiana Merino, Juan José
García-Tortosa, Francisco J.
Garrido, Jesús
Lenti, Luca
Martino, Salvatore
Peláez, José A.
Rodríguez Peces, Martín Jesús
Sanz De Galdeano-Equiza, Carlos
Soler Llorens, Juan L.
author2_role author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 550.83:551.435.2
landslide
geophysical prospecting
ambient noise
f-k technique
HVSR
Geofísica
Geodinámica
2507 Geofísica
2507 Geofísica
topic 550.83:551.435.2
landslide
geophysical prospecting
ambient noise
f-k technique
HVSR
Geofísica
Geodinámica
2507 Geofísica
2507 Geofísica
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-wavenumber (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
2021-01-01
2021
2021-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/7858
url https://hdl.handle.net/20.500.14352/7858
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución 3.0 España
https://creativecommons.org/licenses/by/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución 3.0 España
https://creativecommons.org/licenses/by/3.0/es/
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:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.300724

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