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Title

Hydroclimatic changes in northern Levant over the past 400,000 years

Publication Year

2015

Author(s)
  • Gasse, Francoise
  • Vidal, Laurence
  • Van Campo, Elise
  • Demory, Francois
  • Develle, Anne-Lise
  • Tachikawa, Kazuyo
  • Elias, Ata
  • Bard, Edouard
  • Garcia, Marta
  • Sonzogni, Corinne
  • Thouveny, Nicolas
Source
QUATERNARY SCIENCE REVIEWS Volume: 111 Pages: 1-8 Published: 2015
ISSN
0277-3791
Abstract

The Levant, a transition zone between the temperate Mediterranean domain and subtropical deserts, is a key area to study the latitudinal migrations of zonal climatic belts in response to glacial-interglacial conditions. The region underwent large climatic shifts during the Late Quaternary, with dramatic impacts on water resources and human populations. This paper presents the unique long-term hydroclimatic record (ca. 400 ka) from Northern Levant, derived from a sediment core taken from a small tectonic basin of northern Lebanon, the currently wettest area of the Levant. Combined biotic (pollen, biologic aquatic remains) and abiotic proxies (sediment properties, carbonate oxygen isotopes) reveal relatively high water availability during interglacials and generally drier glacials periods during the past four climate cycles. These general trends are in line with pollen records from southeastern and near east Mediterranean areas, but differ from some paleohydrological records from the southern Levant. Southward migrations of the rain-bearing mid-latitude westerlies during glacial periods and regional land topography are likely to explain the observed regional climate signatures. In addition, distinctive climate signatures of the successive wetter/drier intervals reflect interactions between global forcing (insolation, atmospheric greenhouse gas concentration), eastern Mediterranean Sea surface conditions intimately linked to North Atlantic climate and to ice-sheet and sea-ice extent at high northern latitudes, land topography, and local hydrogeological processes. Our record brings new benchmarks for understanding the spatial heterogeneity of eastern Mediterranean responses to global climate changes. (C) 2015 Published by Elsevier Ltd.

Author Keyword(s)
  • Paleoclimatology
  • Lake deposits
  • Glacial/interglacial cycles
  • Levant
KeyWord(s) Plus
  • EASTERN MEDITERRANEAN REGION
  • ATMOSPHERIC CIRCULATION
  • MIDDLE-EAST
  • LAKE VAN
  • CLIMATE
  • SPELEOTHEMS
  • HISTORY
  • TEMPERATURES
  • VARIABILITY
  • DEPOSITION
ESI Discipline(s)
  • Environment/Ecology
  • Geosciences
Web of Science Category(ies)
  • Geography, Physical
  • Geosciences, Multidisciplinary
Adress(es)

[Gasse, Francoise; Vidal, Laurence; Demory, Francois; Develle, Anne-Lise; Tachikawa, Kazuyo; Bard, Edouard; Garcia, Marta; Sonzogni, Corinne; Thouveny, Nicolas] Aix Marseille Univ, CEREGE, CNRS, IRD,Coll France,CEREGE, F-13545 Aix En Provence 04, France; [Van Campo, Elise] Univ Toulouse, INPT, CNRS, ECOLAB,UMR 5245, F-31062 Toulouse 9, France; [Develle, Anne-Lise] Univ Savoie, EDYTEM, UMR 5204, F-73376 Le Bourget Du Lac, France; [Elias, Ata] Amer Univ Beirut, Dept Geol, Beirut, Lebanon

Reprint Adress

Vidal, L (reprint author), Aix Marseille Univ, CEREGE, CNRS, IRD,Coll France,CEREGE, BP 80, F-13545 Aix En Provence 04, France.

Country(ies)
  • France
  • Lebanon
CNRS - Adress(es)
  • Centre européen de recherche et d'enseignement de géosciences de l'environnement (CEREGE), UMR7330
  • Environnements, Dynamiques et Territoires de la Montagne (EDYTEM), UMR5204
  • Laboratoire d'écologie fonctionnelle et environnement (ECOLAB), UMR5245
Accession Number
WOS:000353431100001
uid:/1KJ70KJV
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