Reconstructing the Snow Avalanche of Coll de Pal 2018 (SE Pyrenees).

Developments in mountain areas prone to natural hazards produce undesired impacts and damages. Thus, disaster assessment is mandatory to understand the physics of dangerous events and to make decisions to prevent hazardous situations. This work focusses on the practical implementation of methods and...

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Detalhes bibliográficos
Autores: Sanz-Ramos, Marcos, Andrade Fuentes, Carlos Alberto, Oller i Figueras, Pere, Furdada i Bellavista, Glòria, Bladé, Ernest, Martínez-Gomariz, Eduardo
Formato: artículo
Fecha de publicación:2021
País:España
Recursos:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/180002
Acesso em linha:https://hdl.handle.net/2445/180002
Access Level:acceso abierto
Palavra-chave:Allaus
Neu
Pirineus
Avalanches
Snow
Pyrenees
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spelling Reconstructing the Snow Avalanche of Coll de Pal 2018 (SE Pyrenees).Sanz-Ramos, MarcosAndrade Fuentes, Carlos AlbertoOller i Figueras, PereFurdada i Bellavista, GlòriaBladé, ErnestMartínez-Gomariz, EduardoAllausNeuPirineusAvalanchesSnowPyreneesDevelopments in mountain areas prone to natural hazards produce undesired impacts and damages. Thus, disaster assessment is mandatory to understand the physics of dangerous events and to make decisions to prevent hazardous situations. This work focusses on the practical implementation of methods and tools to assess a snow avalanche that affected a road at the Coll de Pal in 2018 (SE Pyrenees). This is a quite common situation in mountain roads and the assessment has to focus specially in the avalanche-road interaction, on the return periods considered and on the dynamics of the phenomena. This assessment presents the field recognition, snow and weather characterization and numerical modelling of the avalanche. Field campaigns revealed evidences of the avalanche triggering, runout trajectory and general behavior. An unstable situation of the snowpack due to a relatively large snowfall fallen some days before over a previous snowpack with weak layers, caused the avalanche triggering when an additional load was added by a strong wind-drift episode. A medium size (<2500 m3) soft slab avalanche, corresponding to a return period of 15-20 years, occurred and crossed the road of the Coll de Pal pass. The event was reproduced numerically by means of the 2D-SWE based numerical tool Iber aiming to analyze the avalanche behavior. Results of the simulation corresponded with the observations (runout trajectory and snow deposit); thus, relevant information about the avalanche dynamics could be obtained. Identified differences probably come from the terrain elevation data, which represent 'snow free' topography and do not consider the snowpack on the terrainMDPI2021info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2445/180002Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaIngléshttps://doi.org/10.3390/geohazards2030011GeoHazards, 2021, vol. 2, num. 3, p. 196-211https://doi.org/10.3390/geohazards2030011, 2021info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1800022026-05-27T06:46:51Z
dc.title.none.fl_str_mv Reconstructing the Snow Avalanche of Coll de Pal 2018 (SE Pyrenees).
title Reconstructing the Snow Avalanche of Coll de Pal 2018 (SE Pyrenees).
spellingShingle Reconstructing the Snow Avalanche of Coll de Pal 2018 (SE Pyrenees).
Sanz-Ramos, Marcos
Allaus
Neu
Pirineus
Avalanches
Snow
Pyrenees
title_short Reconstructing the Snow Avalanche of Coll de Pal 2018 (SE Pyrenees).
title_full Reconstructing the Snow Avalanche of Coll de Pal 2018 (SE Pyrenees).
title_fullStr Reconstructing the Snow Avalanche of Coll de Pal 2018 (SE Pyrenees).
title_full_unstemmed Reconstructing the Snow Avalanche of Coll de Pal 2018 (SE Pyrenees).
title_sort Reconstructing the Snow Avalanche of Coll de Pal 2018 (SE Pyrenees).
dc.creator.none.fl_str_mv Sanz-Ramos, Marcos
Andrade Fuentes, Carlos Alberto
Oller i Figueras, Pere
Furdada i Bellavista, Glòria
Bladé, Ernest
Martínez-Gomariz, Eduardo
author Sanz-Ramos, Marcos
author_facet Sanz-Ramos, Marcos
Andrade Fuentes, Carlos Alberto
Oller i Figueras, Pere
Furdada i Bellavista, Glòria
Bladé, Ernest
Martínez-Gomariz, Eduardo
author_role author
author2 Andrade Fuentes, Carlos Alberto
Oller i Figueras, Pere
Furdada i Bellavista, Glòria
Bladé, Ernest
Martínez-Gomariz, Eduardo
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Allaus
Neu
Pirineus
Avalanches
Snow
Pyrenees
topic Allaus
Neu
Pirineus
Avalanches
Snow
Pyrenees
description Developments in mountain areas prone to natural hazards produce undesired impacts and damages. Thus, disaster assessment is mandatory to understand the physics of dangerous events and to make decisions to prevent hazardous situations. This work focusses on the practical implementation of methods and tools to assess a snow avalanche that affected a road at the Coll de Pal in 2018 (SE Pyrenees). This is a quite common situation in mountain roads and the assessment has to focus specially in the avalanche-road interaction, on the return periods considered and on the dynamics of the phenomena. This assessment presents the field recognition, snow and weather characterization and numerical modelling of the avalanche. Field campaigns revealed evidences of the avalanche triggering, runout trajectory and general behavior. An unstable situation of the snowpack due to a relatively large snowfall fallen some days before over a previous snowpack with weak layers, caused the avalanche triggering when an additional load was added by a strong wind-drift episode. A medium size (<2500 m3) soft slab avalanche, corresponding to a return period of 15-20 years, occurred and crossed the road of the Coll de Pal pass. The event was reproduced numerically by means of the 2D-SWE based numerical tool Iber aiming to analyze the avalanche behavior. Results of the simulation corresponded with the observations (runout trajectory and snow deposit); thus, relevant information about the avalanche dynamics could be obtained. Identified differences probably come from the terrain elevation data, which represent 'snow free' topography and do not consider the snowpack on the terrain
publishDate 2021
dc.date.none.fl_str_mv 2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/180002
url https://hdl.handle.net/2445/180002
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.3390/geohazards2030011
GeoHazards, 2021, vol. 2, num. 3, p. 196-211
https://doi.org/10.3390/geohazards2030011
dc.rights.none.fl_str_mv , 2021
info:eu-repo/semantics/openAccess
rights_invalid_str_mv , 2021
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 Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,198674

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