| DOI: | 10.1016/j.gloplacha.2014.08.013
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| 论文题名: | How frequent is storm-induced flooding in the central part of the Bay of Biscay? |
| 作者: | Breilh J.-F.; Bertin X.; Chaumillon T.; Giloy N.; Sauzeau T.
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| ISSN: | 0921-8509
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| 出版年: | 2014
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| 卷: | 122 | | 起始页码: | 161
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| 结束页码: | 175
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| 语种: | 英语
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| 英文关键词: | Coastal flooding
; Extreme water levels
; Historical archives
; Numerical modeling
; Return period
; Storm surge
; Xynthia
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| Scopus关键词: | Numerical models
; Ocean currents
; Sea level
; Storms
; Tide gages
; Water levels
; Coastal flooding
; Historical archive
; Return periods
; Storm surges
; Xynthia
; Floods
; Numerical models
; coastal protection
; data set
; ecological modeling
; flooding
; meteorology
; numerical model
; sea level
; storm surge
; vulnerability
; water level
; return period
; Atlantic Ocean
; Bay of Biscay
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| 英文摘要: | This study analyzes historical archives to produce a database of storm-induced coastal flooding in the French central part of the Bay of Biscay since 1500. AD. From this new database, 46 coastal floods have been reported for the last 500. years (1 event every 11. yr on average), which demonstrates the high vulnerability of this region to coastal flooding. The limitations of historical archives prevent concluding to a change in storminess over the period. The six largest coastal floods that occurred since 1900 are further investigated because numerous informations are available in terms of meteorological conditions as well as maximum water levels reached. Associated storm surges are also modeled using a simplified methodology, relying on a fully coupled wave and circulation modeling system directly forced by the available meteorological data. The analysis of modeling results and historical archives reveals firstly that several meteo-oceanic settings can lead to extensive coastal flooding in the studied area. The analyzed events allow distinguishing three main settings: (1) a small storm surge associated with the highest astronomical tidal levels, (2) a large storm surge, induced either by extreme winds or a particular sea-state and associated with high astronomical tidal levels and, (3) a large storm surge enhanced by extreme wave conditions. Second, maximum water levels reached during these 6 coastal floods were shown to be higher than the 100. years return period water level estimated in several recently published studies. This inconstancy can be explained mainly by the lack of extreme water level records in tide gauge datasets used in these previous studies. To a slightest degree, this study questions the validity of classical statistical approaches when analyzing extreme water levels data resulting from contrasting meteo-oceanic settings. It is concluded that historical archives combined with storm surge modeling could be a valuable approach to better estimate the return period of extreme sea levels and improve the understanding on the vulnerability of mixed-energy coastal environments such as the study area. © 2014 Elsevier B.V. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84906850820&doi=10.1016%2fj.gloplacha.2014.08.013&partnerID=40&md5=80c7a15bf3e4a750afa48bfa75aeb866
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/11415
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| Appears in Collections: | 全球变化的国际研究计划
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作者单位: | UMR 7266 LIENSs CNRS-Université de La Rochelle, 2 rue Olympe de gouges, 17000 La Rochelle, France
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| Recommended Citation: | |
Breilh J.-F.,Bertin X.,Chaumillon T.,et al. How frequent is storm-induced flooding in the central part of the Bay of Biscay?[J],2014-01-01,122.
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