Classifying compound coastal storm and heavy rainfall events in the north-western Spanish Mediterranean

The north-west (NW) Mediterranean coastal zone is a populous and well-developed area in which the impact of natural hazards like flash floods and coastal storms can result in frequent and significant damages. Although the occurrence and impacts of such hazards have been widely covered, few studies h...

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Autores: Sanuy, Marc, Rigo, Tomeu, Jiménez, José A., Llasat Botija, María del Carmen
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/186870
Acceso en línea:https://hdl.handle.net/2445/186870
Access Level:acceso abierto
Palabra clave:Tempestes
Costes
Mediterrània (Regió)
Storms
Coasts
Mediterranean Region
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spelling Classifying compound coastal storm and heavy rainfall events in the north-western Spanish MediterraneanSanuy, MarcRigo, TomeuJiménez, José A.Llasat Botija, María del CarmenTempestesCostesMediterrània (Regió)StormsCoastsMediterranean RegionThe north-west (NW) Mediterranean coastal zone is a populous and well-developed area in which the impact of natural hazards like flash floods and coastal storms can result in frequent and significant damages. Although the occurrence and impacts of such hazards have been widely covered, few studies have considered their combined impact on the region, which would result in more damage. Within this context, this study analyses the occurrence and characteristics of compound extreme events of heavy rainfall episodes (as a proxy for flash floods) and coastal storms (using the maximum significant wave height) along the Catalan coast as a paradigm of the NW Mediterranean. Two different types of events are considered: multivariate, in which the two hazards occur at the same location, and spatially compounding, in which they occur within the same limited time window, and their impacts accumulate at distinct and separate locations. The analysis is regionally performed along a coastline extension of about 600 km by considering seven coastal sectors and their corresponding river catchment basins. Once the compound events are analysed, the synoptic atmospheric pressure fields are analysed to determine the prevailing weather conditions that generated them. Finally, a Bayesian network is used to fully characterize these events over the territory. The obtained results show that the NW Mediterranean, represented by the Catalan coast, has a high probability of experiencing compound extreme events. Despite the relatively small size of the study area, there are significant variations in the event characteristics along the territory, with the most frequent type being spatially compound, except in the northernmost sectors where multivariate events dominate. These northern sectors also present the highest correlation in the intensity of both hazards. Three representative synoptic situations have been identified as dominant for the occurrence of these events, with different relative importance levels of the compounding drivers (rainfall and waves) and different distributions of impacts across coastal basins. Overall, results obtained from specific events indicated that heavy rainfall is related to the most significant impacts despite having a larger spatial reach.European Geosciences Union (EGU)2022202220212022info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion23 p.application/pdfapplication/pdfhttps://hdl.handle.net/2445/186870Articles publicats en revistes (Física Aplicada)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.5194/hess-25-3759-2021Hydrology and Earth System Sciences, 2021, vol. 25, num. 6, p. 3759-3781https://doi.org/10.5194/hess-25-3759-2021cc-by (c) Sanuy, Marc et al., 2021https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1868702026-05-29T05:05:01Z
dc.title.none.fl_str_mv Classifying compound coastal storm and heavy rainfall events in the north-western Spanish Mediterranean
title Classifying compound coastal storm and heavy rainfall events in the north-western Spanish Mediterranean
spellingShingle Classifying compound coastal storm and heavy rainfall events in the north-western Spanish Mediterranean
Sanuy, Marc
Tempestes
Costes
Mediterrània (Regió)
Storms
Coasts
Mediterranean Region
title_short Classifying compound coastal storm and heavy rainfall events in the north-western Spanish Mediterranean
title_full Classifying compound coastal storm and heavy rainfall events in the north-western Spanish Mediterranean
title_fullStr Classifying compound coastal storm and heavy rainfall events in the north-western Spanish Mediterranean
title_full_unstemmed Classifying compound coastal storm and heavy rainfall events in the north-western Spanish Mediterranean
title_sort Classifying compound coastal storm and heavy rainfall events in the north-western Spanish Mediterranean
dc.creator.none.fl_str_mv Sanuy, Marc
Rigo, Tomeu
Jiménez, José A.
Llasat Botija, María del Carmen
author Sanuy, Marc
author_facet Sanuy, Marc
Rigo, Tomeu
Jiménez, José A.
Llasat Botija, María del Carmen
author_role author
author2 Rigo, Tomeu
Jiménez, José A.
Llasat Botija, María del Carmen
author2_role author
author
author
dc.subject.none.fl_str_mv Tempestes
Costes
Mediterrània (Regió)
Storms
Coasts
Mediterranean Region
topic Tempestes
Costes
Mediterrània (Regió)
Storms
Coasts
Mediterranean Region
description The north-west (NW) Mediterranean coastal zone is a populous and well-developed area in which the impact of natural hazards like flash floods and coastal storms can result in frequent and significant damages. Although the occurrence and impacts of such hazards have been widely covered, few studies have considered their combined impact on the region, which would result in more damage. Within this context, this study analyses the occurrence and characteristics of compound extreme events of heavy rainfall episodes (as a proxy for flash floods) and coastal storms (using the maximum significant wave height) along the Catalan coast as a paradigm of the NW Mediterranean. Two different types of events are considered: multivariate, in which the two hazards occur at the same location, and spatially compounding, in which they occur within the same limited time window, and their impacts accumulate at distinct and separate locations. The analysis is regionally performed along a coastline extension of about 600 km by considering seven coastal sectors and their corresponding river catchment basins. Once the compound events are analysed, the synoptic atmospheric pressure fields are analysed to determine the prevailing weather conditions that generated them. Finally, a Bayesian network is used to fully characterize these events over the territory. The obtained results show that the NW Mediterranean, represented by the Catalan coast, has a high probability of experiencing compound extreme events. Despite the relatively small size of the study area, there are significant variations in the event characteristics along the territory, with the most frequent type being spatially compound, except in the northernmost sectors where multivariate events dominate. These northern sectors also present the highest correlation in the intensity of both hazards. Three representative synoptic situations have been identified as dominant for the occurrence of these events, with different relative importance levels of the compounding drivers (rainfall and waves) and different distributions of impacts across coastal basins. Overall, results obtained from specific events indicated that heavy rainfall is related to the most significant impacts despite having a larger spatial reach.
publishDate 2021
dc.date.none.fl_str_mv 2021
2022
2022
2022
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://hdl.handle.net/2445/186870
url https://hdl.handle.net/2445/186870
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.5194/hess-25-3759-2021
Hydrology and Earth System Sciences, 2021, vol. 25, num. 6, p. 3759-3781
https://doi.org/10.5194/hess-25-3759-2021
dc.rights.none.fl_str_mv cc-by (c) Sanuy, Marc et al., 2021
https://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) Sanuy, Marc et al., 2021
https://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 23 p.
application/pdf
application/pdf
dc.publisher.none.fl_str_mv European Geosciences Union (EGU)
publisher.none.fl_str_mv European Geosciences Union (EGU)
dc.source.none.fl_str_mv Articles publicats en revistes (Física Aplicada)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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