A modeling-based analysis of the flooding associated with Xynthia, central Bay of Biscay
International audience Storm-induced coastal flooding is among the most destructive natural disasters, as seen recently in the Bay of Bengal, the Gulf of Mexico and the Philippines. This study presents a high resolution hindcast of the flooding associated with Xynthia, a mid-latitude storm that seve...
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ftccsdartic:oai:HAL:hal-01443914v1 2023-05-15T17:38:40+02:00 A modeling-based analysis of the flooding associated with Xynthia, central Bay of Biscay Bertin, Xavier Roland, Aaron Zhang, Y.J. Breilh, Jean-François Chaumillon, Eric LIttoral ENvironnement et Sociétés - UMRi 7266 (LIENSs) Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS) Institut für Wasserbau und Wasserwirtschaft (IWW) Technische Universität Darmstadt (TU Darmstadt) Institut de Combustion, Aérothermique, Réactivité et Environnement (ICARE) Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut des Sciences de l'Ingénierie et des Systèmes (INSIS) Chinese Research Academy of Environmental Science 2014-12-01 https://hal.archives-ouvertes.fr/hal-01443914 en eng HAL CCSD Elsevier hal-01443914 https://hal.archives-ouvertes.fr/hal-01443914 ISSN: 0378-3839 Coastal Engineering https://hal.archives-ouvertes.fr/hal-01443914 Coastal Engineering, Elsevier, 2014, 94, pp.80-89 http://www.sciencedirect.com.gutenberg.univ-lr.fr/science/article/pii/S0378383914001653?np=y [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy [SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology info:eu-repo/semantics/article Journal articles 2014 ftccsdartic 2021-10-24T09:10:42Z International audience Storm-induced coastal flooding is among the most destructive natural disasters, as seen recently in the Bay of Bengal, the Gulf of Mexico and the Philippines. This study presents a high resolution hindcast of the flooding associated with Xynthia, a mid-latitude storm that severely hit the central part of the Bay of Biscay in February 2010. A 2DH fully coupled modeling system is applied to the North-East Atlantic Ocean, with a resolution locally reaching a few meters along the coastline of the study area. Such a fine resolution was required to adequately represent the dikes and the barriers that usually prevent the area from flooding, but results in a > 1,700,000 element unstructured grid. The comparison with the available data reveals that waves and water levels are reproduced with normalized errors of the order of 10% and 5%, respectively. The extension of the flooding is also well reproduced, although with some underestimations along the coastline and overestimation in the inner part of large marshes. These limitations are explained by a lack of spatial resolution locally and the absence of several processes in the model such as infragravity waves and wave runup. The comparison between our baseline simulation and a simulation where the flooding is disabled by increasing the dike height reveals differences in maximum water levels locally reaching 1.0 m. This result is of key importance for coastal management strategies and also questions classical engineering approaches relying on one-way nesting. Article in Journal/Newspaper North East Atlantic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy [SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology |
spellingShingle |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy [SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology Bertin, Xavier Roland, Aaron Zhang, Y.J. Breilh, Jean-François Chaumillon, Eric A modeling-based analysis of the flooding associated with Xynthia, central Bay of Biscay |
topic_facet |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy [SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology |
description |
International audience Storm-induced coastal flooding is among the most destructive natural disasters, as seen recently in the Bay of Bengal, the Gulf of Mexico and the Philippines. This study presents a high resolution hindcast of the flooding associated with Xynthia, a mid-latitude storm that severely hit the central part of the Bay of Biscay in February 2010. A 2DH fully coupled modeling system is applied to the North-East Atlantic Ocean, with a resolution locally reaching a few meters along the coastline of the study area. Such a fine resolution was required to adequately represent the dikes and the barriers that usually prevent the area from flooding, but results in a > 1,700,000 element unstructured grid. The comparison with the available data reveals that waves and water levels are reproduced with normalized errors of the order of 10% and 5%, respectively. The extension of the flooding is also well reproduced, although with some underestimations along the coastline and overestimation in the inner part of large marshes. These limitations are explained by a lack of spatial resolution locally and the absence of several processes in the model such as infragravity waves and wave runup. The comparison between our baseline simulation and a simulation where the flooding is disabled by increasing the dike height reveals differences in maximum water levels locally reaching 1.0 m. This result is of key importance for coastal management strategies and also questions classical engineering approaches relying on one-way nesting. |
author2 |
LIttoral ENvironnement et Sociétés - UMRi 7266 (LIENSs) Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS) Institut für Wasserbau und Wasserwirtschaft (IWW) Technische Universität Darmstadt (TU Darmstadt) Institut de Combustion, Aérothermique, Réactivité et Environnement (ICARE) Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut des Sciences de l'Ingénierie et des Systèmes (INSIS) Chinese Research Academy of Environmental Science |
format |
Article in Journal/Newspaper |
author |
Bertin, Xavier Roland, Aaron Zhang, Y.J. Breilh, Jean-François Chaumillon, Eric |
author_facet |
Bertin, Xavier Roland, Aaron Zhang, Y.J. Breilh, Jean-François Chaumillon, Eric |
author_sort |
Bertin, Xavier |
title |
A modeling-based analysis of the flooding associated with Xynthia, central Bay of Biscay |
title_short |
A modeling-based analysis of the flooding associated with Xynthia, central Bay of Biscay |
title_full |
A modeling-based analysis of the flooding associated with Xynthia, central Bay of Biscay |
title_fullStr |
A modeling-based analysis of the flooding associated with Xynthia, central Bay of Biscay |
title_full_unstemmed |
A modeling-based analysis of the flooding associated with Xynthia, central Bay of Biscay |
title_sort |
modeling-based analysis of the flooding associated with xynthia, central bay of biscay |
publisher |
HAL CCSD |
publishDate |
2014 |
url |
https://hal.archives-ouvertes.fr/hal-01443914 |
genre |
North East Atlantic |
genre_facet |
North East Atlantic |
op_source |
ISSN: 0378-3839 Coastal Engineering https://hal.archives-ouvertes.fr/hal-01443914 Coastal Engineering, Elsevier, 2014, 94, pp.80-89 http://www.sciencedirect.com.gutenberg.univ-lr.fr/science/article/pii/S0378383914001653?np=y |
op_relation |
hal-01443914 https://hal.archives-ouvertes.fr/hal-01443914 |
_version_ |
1766139209835347968 |