Définition de l'alea submersion marine sur le site de la Grande Plage de Gâvres (Morbihan)

Peeters, Pierre; Schoorens, J.; Cornec, Erwan Le; Michard, Bertrand; Lechat, M. F.

doi:10.1051/lhb:2009004

Cited by 9 publications

(5 citation statements)

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“…Despite biases and inaccuracies associated with non-scientific sources, historical archives are very useful for characterizing past marine floods (Breilh et al, 2014, Peeters et al, 2009Garnier and Surville, 2010;Rilo et al, 2015). Focusing on French historical documents, two periods can be identified regarding the types of information reported.…”

Section: 212-past Storm Surge Events In Francementioning

confidence: 99%

Storm-induced marine flooding: Lessons from a multidisciplinary approach

Chaumillon

Bertin

Fortunato

et al. 2017

Earth-Science Reviews

138

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Section: 212-past Storm Surge Events In Francementioning

confidence: 99%

Storm-induced marine flooding: Lessons from a multidisciplinary approach

Chaumillon

Bertin

Fortunato

et al. 2017

Earth-Science Reviews

138

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“…1 ). A 6-km long dune barrier, formed during the Holocene glacial retreat, separates the lagoon from the sea and connects the Gâvres tombolo to the continent 23 . Most of the PMG undergoes the tidal range, coming from a 300 m wide pass situated at the north-west.…”

Section: Resultsmentioning

confidence: 99%

Climatological influences on major storm events during the last millennium along the Atlantic coast of France

Pouzet

Maanan

2020

Sci Rep

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This paper reviews the climatological influences on major past storm events in the Northeast Atlantic. Analyses are based on a millenary record of sedimentological and historical impacts affecting coastal societies. The effects of 20 past storms have been found from sedimentary deposits from the last 1,000 years. Historical archives confirmed these events. This paper highlights five major storms that have markedly impacted coastal populations. They date back to 1351-1352, 1469, 1645, 1711 and 1751 AD. The 1351-1352 AD event is defined as a millennium storm that was "likely apocalyptical", provoking serious damage and long lasting floods on much of the European coast. Major storm impacts have mostly been recorded during positive North Atlantic Oscillation phases. Four decreasing temperature phases are concomitant with 1300-1355, 1420-1470, 1560-1590 and 1690-1715 AD periods, during which much of the northern Atlantic coast of France underwent severe storm damages. Reconstructing extreme storm history is a methodological challenge of importance in order to understand climate change 1,2. Data studying recent storms have proved that anthropogenic warming has impacted extratropical storm activity or trajectories in the North Atlantic Ocean 3,4. These studies are mainly based on isotopic temperature evolution or oceanological and climatological modelling. Historical and sedimentological data are used to understand centuries-old historical storm trends, thus extending this analysis's timescale. They give us valuable information on past storm dynamics, including their relation with various climatological mechanisms, such as the North Atlantic Oscillation (NAO) or temperature variation 5-7. The most impacting storms studied can testify to notable ancient phases of high extreme storm activity. These storm phases have deeply impacted their environments, coastal societies and the area's past economic activity. This paper reviews storm impacts recorded on central European coasts; many of which have been largely studied by historians, thanks to an extensive and high-quality regional archive collection 8-14. Sedimentological data are primarily used in storm research to expose environmental disturbances of Storm Events (StE) that occurred during the last millennium 7,15. Several sedimentological palaeostorm studies have already been conducted on the central European coast 16-20. However, they mainly focus on Holocene storm phases or post nineteenth century storms. While a large collection of historical documents precisely exposing storms' societal and economic impacts is available, sedimentological records of millennium storms are still less documented in this area. Consequently, this paper has three main objectives: (1) to detect impacting StE in the last 1,000 years thanks to a combination of sedimentological data and historical documents; (2) to use this crossing to spatialise damage and assess past trajectories of the most disturbing storms that crossed the area; and (3) to compare storm chronologies with NAO and temperature...

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“…Les méthodologies mises en oeuvre dans les PPR Littoraux sont diverses (PONS & CHINI, 2002 ;DIREN LR, 2008 ;PEETERS et al, 2009). En respectant les principes fixés par le guide, les méthodologies se sont adaptées aux spécificités locales et ont su tirer parti des nouveaux outils et de l'amélioration de la qualité des données.…”

Section: Resultsunclassified

Évolution des méthodes de caractérisation des aléas littoraux

Perherin¹,

Roche²

2010

XIèmes Journées, Les Sables d'Olonne

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Définition de l'alea submersion marine sur le site de la Grande Plage de Gâvres (Morbihan)

Cited by 9 publications

References 0 publications

Storm-induced marine flooding: Lessons from a multidisciplinary approach

Storm-induced marine flooding: Lessons from a multidisciplinary approach

Climatological influences on major storm events during the last millennium along the Atlantic coast of France

Évolution des méthodes de caractérisation des aléas littoraux

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