Versatile image-based measurements of granular flows and water wave propagation in experiments of tsunamis generated by landslides

Landslides falling into water bodies can generate destructive waves, which can be classified as tsunamis. An experimental facility to study this phenomenon has been set up. It consists of a landslidegenerator releasing gravel at high-speed into a wave basin. A non-intrusive system has been designed...

Descripción completa

Detalles Bibliográficos
Autores: Bregoli, Francesco, Medina Iglesias, Vicente César de|||0000-0001-5578-3848, Bateman Pinzón, Allen|||0000-0001-9980-6554
Tipo de recurso: artículo
Fecha de publicación:2020
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/183898
Acceso en línea:https://hdl.handle.net/2117/183898
https://dx.doi.org/10.1007/s12650-020-00628-z
Access Level:acceso abierto
Palabra clave:Granular flow
Tsunamis
Landslides
Particle tracking velocimetry
Image processing
Camera calibration
Granular flow measurement
Landslide tsunami
Video image processing
Wave profile measurement
Materials granulars
Esllavissades
Imatges -- Processament
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal
Àrees temàtiques de la UPC::Enginyeria mecànica
id ES_fe72c8c91cc03032cae8b15c7252fcf5
oai_identifier_str oai:upcommons.upc.edu:2117/183898
network_acronym_str ES
network_name_str España
repository_id_str
spelling Versatile image-based measurements of granular flows and water wave propagation in experiments of tsunamis generated by landslidesBregoli, FrancescoMedina Iglesias, Vicente César de|||0000-0001-5578-3848Bateman Pinzón, Allen|||0000-0001-9980-6554Granular flowTsunamisLandslidesParticle tracking velocimetryImage processingCamera calibrationGranular flow measurementLandslide tsunamiVideo image processingWave profile measurementMaterials granularsTsunamisEsllavissadesImatges -- ProcessamentÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyalÀrees temàtiques de la UPC::Enginyeria mecànicaLandslides falling into water bodies can generate destructive waves, which can be classified as tsunamis. An experimental facility to study this phenomenon has been set up. It consists of a landslidegenerator releasing gravel at high-speed into a wave basin. A non-intrusive system has been designed ad-hocto be able to measure the high velocity and the geometry of the landslide as well as the generated waves characteristics. The measurement system employs the treatment of images captured by a high-speed camera which records the launched granular material illuminated by a laser sheet. A grid of laser sheets marks thebasin water surface. The water has been filled by a small amount of kaolin to properly reflect the laser lightat water surface. Thus, by filming with high definition cameras the perturbed water surface and successively processing the resulting images, it has been possible to measure the generated waves. The measurement framework employs a versatile camera calibration technique which allows accurate measurements in presence of: (1) high lens distortions; (2) pronounced non-parallelism condition between camera sensor and plane of measurement coincident with the laser sheet. The maximum resolution of the measurement tool is0.01 mm, while the maximum uncertainty due to systematic error has been estimated to be 15% for theworst-case scenario. This work improves the suitability of image-based measuring systems in granular flows and free surface hydraulics experimentsThis work was funded by GITS and the 3 years’ national project DEBRIS FLOW (CGL 2009-13039) ofthe Spanish Ministry of Education. Francesco Bregoli has been supported by the 4-years grant FPU2009-3766 of the SpanishMinistry of Education. Authors want to thank Dr. Cecilia Caldini (IDOM Consulting, Barcelona) for the 3D reconstruction ofthe laboratory setup.Peer Reviewed20202020-04-0120202020-04-20journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/183898https://dx.doi.org/10.1007/s12650-020-00628-zreponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0http://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/1838982026-05-27T15:37:01Z
dc.title.none.fl_str_mv Versatile image-based measurements of granular flows and water wave propagation in experiments of tsunamis generated by landslides
title Versatile image-based measurements of granular flows and water wave propagation in experiments of tsunamis generated by landslides
spellingShingle Versatile image-based measurements of granular flows and water wave propagation in experiments of tsunamis generated by landslides
Bregoli, Francesco
Granular flow
Tsunamis
Landslides
Particle tracking velocimetry
Image processing
Camera calibration
Granular flow measurement
Landslide tsunami
Video image processing
Wave profile measurement
Materials granulars
Tsunamis
Esllavissades
Imatges -- Processament
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal
Àrees temàtiques de la UPC::Enginyeria mecànica
title_short Versatile image-based measurements of granular flows and water wave propagation in experiments of tsunamis generated by landslides
title_full Versatile image-based measurements of granular flows and water wave propagation in experiments of tsunamis generated by landslides
title_fullStr Versatile image-based measurements of granular flows and water wave propagation in experiments of tsunamis generated by landslides
title_full_unstemmed Versatile image-based measurements of granular flows and water wave propagation in experiments of tsunamis generated by landslides
title_sort Versatile image-based measurements of granular flows and water wave propagation in experiments of tsunamis generated by landslides
dc.creator.none.fl_str_mv Bregoli, Francesco
Medina Iglesias, Vicente César de|||0000-0001-5578-3848
Bateman Pinzón, Allen|||0000-0001-9980-6554
author Bregoli, Francesco
author_facet Bregoli, Francesco
Medina Iglesias, Vicente César de|||0000-0001-5578-3848
Bateman Pinzón, Allen|||0000-0001-9980-6554
author_role author
author2 Medina Iglesias, Vicente César de|||0000-0001-5578-3848
Bateman Pinzón, Allen|||0000-0001-9980-6554
author2_role author
author
dc.subject.none.fl_str_mv Granular flow
Tsunamis
Landslides
Particle tracking velocimetry
Image processing
Camera calibration
Granular flow measurement
Landslide tsunami
Video image processing
Wave profile measurement
Materials granulars
Tsunamis
Esllavissades
Imatges -- Processament
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal
Àrees temàtiques de la UPC::Enginyeria mecànica
topic Granular flow
Tsunamis
Landslides
Particle tracking velocimetry
Image processing
Camera calibration
Granular flow measurement
Landslide tsunami
Video image processing
Wave profile measurement
Materials granulars
Tsunamis
Esllavissades
Imatges -- Processament
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal
Àrees temàtiques de la UPC::Enginyeria mecànica
description Landslides falling into water bodies can generate destructive waves, which can be classified as tsunamis. An experimental facility to study this phenomenon has been set up. It consists of a landslidegenerator releasing gravel at high-speed into a wave basin. A non-intrusive system has been designed ad-hocto be able to measure the high velocity and the geometry of the landslide as well as the generated waves characteristics. The measurement system employs the treatment of images captured by a high-speed camera which records the launched granular material illuminated by a laser sheet. A grid of laser sheets marks thebasin water surface. The water has been filled by a small amount of kaolin to properly reflect the laser lightat water surface. Thus, by filming with high definition cameras the perturbed water surface and successively processing the resulting images, it has been possible to measure the generated waves. The measurement framework employs a versatile camera calibration technique which allows accurate measurements in presence of: (1) high lens distortions; (2) pronounced non-parallelism condition between camera sensor and plane of measurement coincident with the laser sheet. The maximum resolution of the measurement tool is0.01 mm, while the maximum uncertainty due to systematic error has been estimated to be 15% for theworst-case scenario. This work improves the suitability of image-based measuring systems in granular flows and free surface hydraulics experiments
publishDate 2020
dc.date.none.fl_str_mv 2020
2020-04-01
2020
2020-04-20
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/183898
https://dx.doi.org/10.1007/s12650-020-00628-z
url https://hdl.handle.net/2117/183898
https://dx.doi.org/10.1007/s12650-020-00628-z
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
Attribution 4.0
http://creativecommons.org/licenses/by/4.0/
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
Attribution 4.0
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869425686155886592
score 15.301629

Similares en LA Referencia