Debris flow triggering characterization through a comparative analysis among different mountain catchments

The research focuses on the assessment of the conditions for debris flow triggering in three very active mountain catchments. The study areas are the following: Rudan torrent (Vodo di Cadore, Mount Antelao in the Dolomites, Italy), Chiesa torrent (Pieve di Livinallongo, Mount Col di Lana, in the Dol...

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Autores: Pastorello, Roberta, d'Agostino, Vincenzo, Hurlimann Ziegler, Marcel|||0000-0003-0119-1438
Formato: artículo
Fecha de publicación:2020
País:España
Recursos:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/175376
Acesso em linha:https://hdl.handle.net/2117/175376
https://dx.doi.org/10.1016/j.catena.2019.104348
Access Level:acceso abierto
Palavra-chave:Debris avalanches
Debris flow initiation
Runoff
Headwater basin
Hydrological modelling
Esllavissades
Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de roques
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spelling Debris flow triggering characterization through a comparative analysis among different mountain catchmentsPastorello, Robertad'Agostino, VincenzoHurlimann Ziegler, Marcel|||0000-0003-0119-1438Debris avalanchesDebris flow initiationRunoffHeadwater basinHydrological modellingEsllavissadesÀrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de roquesThe research focuses on the assessment of the conditions for debris flow triggering in three very active mountain catchments. The study areas are the following: Rudan torrent (Vodo di Cadore, Mount Antelao in the Dolomites, Italy), Chiesa torrent (Pieve di Livinallongo, Mount Col di Lana, in the Dolomites, Italy) and Rebaixader torrent (border between the regions of Catalonia and Aragon, Axial Pyrenees area, Spain). Due to the differences among these basins and related source areas where debris flows originate, the knowledge on the link between geomorphic conditions and driving mechanisms for debris flow activation is outlined. The study of debris flow initiation is carried out through a hydrological approach and a slope stability analysis. The hydrological analysis is supported by the calibration of intensity-duration curves of triggering rainfalls coupled with a distributed rainfall-runoff model. The analysis is corroborated using literature equations to compute critical discharges for sediment motion at the different levels of terrain deformation. The main results highlight the following: (i) a quite narrow range of triggering water discharges (0.03–0.16 m3/s) and shear stresses (267–413 N/m2), promoting a new insight on the specific hazard mitigation; (ii) the quantification of a second stage of bed breakage, in some circumstances capable of amplifying the debris flow magnitude; and (iii) a minimum critical rainfall duration needed to effectively entrain the phenomenon (12–22 min) that might help to define more precise alert conditions. Finally, the geomorphologic differences among basins revealed two main typologies in terms of driving the triggering mode: flow rate dominant in the Rudan-type basins and mixed (flow rate plus slope stability conditioned) in the Chiesa-Rebaixader-type basins.Peer Reviewed20202020-03-0120202020-01-21journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/175376https://dx.doi.org/10.1016/j.catena.2019.104348reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)InglésengMinisterio de Economía y Competitividad http://doi.org/10.13039/501100003329 BIA2015-67500-R PERDIDA DE SUELO EN LADERAS BAJO CAMBIO CLIMATICO. PROCESOS FISICOS, MODELACION PREDICTIVA Y POSIBLES ESTRATEGIAS DE MITIGACIONopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttps://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/1753762026-05-27T15:37:01Z
dc.title.none.fl_str_mv Debris flow triggering characterization through a comparative analysis among different mountain catchments
title Debris flow triggering characterization through a comparative analysis among different mountain catchments
spellingShingle Debris flow triggering characterization through a comparative analysis among different mountain catchments
Pastorello, Roberta
Debris avalanches
Debris flow initiation
Runoff
Headwater basin
Hydrological modelling
Esllavissades
Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de roques
title_short Debris flow triggering characterization through a comparative analysis among different mountain catchments
title_full Debris flow triggering characterization through a comparative analysis among different mountain catchments
title_fullStr Debris flow triggering characterization through a comparative analysis among different mountain catchments
title_full_unstemmed Debris flow triggering characterization through a comparative analysis among different mountain catchments
title_sort Debris flow triggering characterization through a comparative analysis among different mountain catchments
dc.creator.none.fl_str_mv Pastorello, Roberta
d'Agostino, Vincenzo
Hurlimann Ziegler, Marcel|||0000-0003-0119-1438
author Pastorello, Roberta
author_facet Pastorello, Roberta
d'Agostino, Vincenzo
Hurlimann Ziegler, Marcel|||0000-0003-0119-1438
author_role author
author2 d'Agostino, Vincenzo
Hurlimann Ziegler, Marcel|||0000-0003-0119-1438
author2_role author
author
dc.subject.none.fl_str_mv Debris avalanches
Debris flow initiation
Runoff
Headwater basin
Hydrological modelling
Esllavissades
Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de roques
topic Debris avalanches
Debris flow initiation
Runoff
Headwater basin
Hydrological modelling
Esllavissades
Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de roques
description The research focuses on the assessment of the conditions for debris flow triggering in three very active mountain catchments. The study areas are the following: Rudan torrent (Vodo di Cadore, Mount Antelao in the Dolomites, Italy), Chiesa torrent (Pieve di Livinallongo, Mount Col di Lana, in the Dolomites, Italy) and Rebaixader torrent (border between the regions of Catalonia and Aragon, Axial Pyrenees area, Spain). Due to the differences among these basins and related source areas where debris flows originate, the knowledge on the link between geomorphic conditions and driving mechanisms for debris flow activation is outlined. The study of debris flow initiation is carried out through a hydrological approach and a slope stability analysis. The hydrological analysis is supported by the calibration of intensity-duration curves of triggering rainfalls coupled with a distributed rainfall-runoff model. The analysis is corroborated using literature equations to compute critical discharges for sediment motion at the different levels of terrain deformation. The main results highlight the following: (i) a quite narrow range of triggering water discharges (0.03–0.16 m3/s) and shear stresses (267–413 N/m2), promoting a new insight on the specific hazard mitigation; (ii) the quantification of a second stage of bed breakage, in some circumstances capable of amplifying the debris flow magnitude; and (iii) a minimum critical rainfall duration needed to effectively entrain the phenomenon (12–22 min) that might help to define more precise alert conditions. Finally, the geomorphologic differences among basins revealed two main typologies in terms of driving the triggering mode: flow rate dominant in the Rudan-type basins and mixed (flow rate plus slope stability conditioned) in the Chiesa-Rebaixader-type basins.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020-03-01
2020
2020-01-21
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/175376
https://dx.doi.org/10.1016/j.catena.2019.104348
url https://hdl.handle.net/2117/175376
https://dx.doi.org/10.1016/j.catena.2019.104348
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Ministerio de Economía y Competitividad http://doi.org/10.13039/501100003329 BIA2015-67500-R PERDIDA DE SUELO EN LADERAS BAJO CAMBIO CLIMATICO. PROCESOS FISICOS, MODELACION PREDICTIVA Y POSIBLES ESTRATEGIAS DE MITIGACION
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
https://creativecommons.org/licenses/by-nc-nd/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-NonCommercial-NoDerivatives 4.0 International
https://creativecommons.org/licenses/by-nc-nd/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
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