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Arid and humid phases in southern Spain during the last 4000 years: the Zoñar Lake record, Córdoba

AutorMartín-Puertas, Celia; Valero-Garcés, Blas L. ; Mata, M. Pilar; González-Sampériz, Penélope ; Bao, Roberto; Moreno Caballud, Ana ; Stefanova, Vania
Palabras claveMediterranean climate
lacustrine sediments
humid periods
NAO
Late Holocene
Fecha de publicaciónsep-2008
EditorSage Publications
CitaciónThe Holocene 18(6): 907-921 (2008)
ResumenA multiproxy study of sediments cores from Zoñar Lake (37º29’00’’N, 4º41’22’’ W, 300 m a.s.l.) supported by 11 14C AMS dates provides the first high-resolution centennial-scale reconstruction of past humidity changes in southern Spain during the last 4000 years. Arid periods occurred prior to 2.9 cal. kyr BP and during 1.3-0.6 cal. kyr BP (Medieval Climate Anomaly). The most humid period occurred during 2.6-1.6 cal. kyr BP encompassing the late Iron Age-Iberian and Roman epochs. Two humid periods of lower intensity occurred between 0.8 – 0.6 cal kyr BP (1200 – 1400 AD) and about 400 cal. yr BP (around 1600 AD) coinciding with the onset of the Little Ice Age. Humid conditions are synchronous with a decline in solar output and seem to correspond to atmospheric patterns similar to negative NAO phases. Arid conditions show better correlation with northern Africa climate evolution suggesting a possible link to subtropical dynamics. The geographic location of Zoñar Lake and the robust chronology provides an opportunity to improve our understanding of the climate evolution in mid latitudes during the Late Holocene and to evaluate subtropical and high latitude factors in Mediterranean climate evolution.
Descripción47 páginas, 2 tablas, 6 figuras
Versión del editorhttp://dx.doi.org/10.1177/0959683608093533
URIhttp://hdl.handle.net/10261/47730
DOI10.1177/0959683608093533
ISSN0959-6836
E-ISSN1477-0911
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