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Conference object . 2017
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Review of the late-Holocene storm events along the European Atlantic coasts

Authors: Pouzet, Pierre; Maanan, Mohamed; Piotrowska, Natalia; Baltzer, Agnès; Stéphan, Pierre; Robin, Marc;

Review of the late-Holocene storm events along the European Atlantic coasts

Abstract

The chronology of the late-Holocene coastal storms was reconstructed from vibracore samplings, radiocarbon dating and sedimentary analysis from Yeu island (French Atlantic coast). The methodology used is based on the identification of disturbing sedimentary events recognized within three Holocene sedimentary transgressive sequences selected along the northern coast of the island. These sequences correspond to the present-day coastal salt-marshes and swamps. The sediment cores were centimeter-sampled and studied from several sedimentological proxies (Loss of Ignition, sand fraction, mean grain size) with a high temporal resolution. Chronology was built by age-depth model based on eleven 14C measures of organic sediments and shell samples. Nine paleo-storm events were recorded: a 2100-1950 calBP interval as a deeply stormy-disturbed period; five others major impacted times: 600-500 calBP, 2850-2350 calBP, 3500-3270 calBP, 5400-5370 calBP and 6650-6510 calBP; and three final less meaningful storminess hypothesis near 1590 calBP, 7000 calBP, and between 7670 and 7470 calBP. This chronology was compared with enhanced storminess periods recognized along the European Atlantic coast. Six stormy periods stand out from the last 8000 years: 600-300 BP, 1700-1100 BP, 2900-2500 BP, 3500-3300 BP, 5500-5100 BP and 7700-7100 BP, corresponding to late Holocene global cold events. These results suggests that these changes in coastal hydrodynamics were in phase with those identified over the North-eastern Atlantic and seem to correspond to Holocene cooling first shown in the North Atlantic and associated with decreases in sea surface temperature.

Country
France
Keywords

[ SDU.OCEAN ] Sciences of the Universe [physics]/Ocean, Atmosphere, Extratropical Cyclones, [SDE.MCG]Environmental Sciences/Global Changes, Stratigraphy, Climate Change, [ SHS.GEO ] Humanities and Social Sciences/Geography, [ SDU.ENVI ] Sciences of the Universe [physics]/Continental interfaces, environment, [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces, environment, [SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere, Historical Climatology, Holocene, Storm Surges, [SHS.GEO]Humanities and Social Sciences/Geography, Sedimentology, [SDE.ES]Environmental Sciences/Environmental and Society, Coastal Geomorphology, [ SDE.MCG ] Environmental Sciences/Global Changes, [ SDE.ES ] Environmental Sciences/Environmental and Society

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average