%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Cartier, R.
%A Vidal, L.
%A Sylvestre, Florence
%A Sonzogni, C.
%A Guiter, F.
%A Brisset, E.
%A Miramont, C.
%T Paleohydrological history of Lake Allos (2200 m a.s.l) since 13 500 cal a bp in the Mediterranean Alps inferred from an ostracod delta O-18 record
%D 2022
%L fdi:010084682
%G ENG
%J Journal of Quaternary Science
%@ 0267-8179
%K ZONE MEDITERRANEENNE
%K Lateglacial ; Holocene ; Mediterranean Alps ; ostracods ; oxygen isotopes ; paleohydrology
%K FRANCE
%K ALPES ; ALLOS LAC
%M ISI:000782203300001
%P [12 ]
%R 10.1002/jqs.3425
%U https://www.documentation.ird.fr/hor/fdi:010084682
%> https://www.documentation.ird.fr/intranet/publi/2022-06/010084682.pdf
%V [Early access]
%W Horizon (IRD)
%X This paper presents the first Lateglacial/Holocene (the last 13 500 cal a bp) ostracod delta O-18 record to infer hydroclimate variability in the Southern French Alps. Cytherissa lacustris (delta O-18(sp)) shells extracted from the sediments of Lake Allos allowed a reconstruction of delta O-18(lake water) (delta O-18(lw)) except for the interval 5800-2800 cal a bp. The shape of the Younger Dryas (YD) clearly differed from records documented in the northern Alps. First, delta O-18(lw) values remained close to modern values before a marked drop ca. 12 000 cal a bp. Then, after several oscillations, delta O-18(lw) values increased, reaching the highest value of the record ca. 6100 cal a bp during a thermal optimum for this latitude. Finally, low delta O-18(lw) values occurred from 450 to 100 cal a bp during the Little Ice Age (LIA) following the Medieval Climate anomaly. At the beginning of the YD, delta O-18(lw) probably reflected changes in local glacier dynamics and precipitation sources. The following decrease in delta O-18(lw) values was associated with higher freshwater inputs during the second half of the YD. During the LIA, the low delta O-18 values are consistent with a higher torrential activity and lower air temperatures.
%$ 021 ; 064