Stable isotope records of Late Quaternary climate and hydrology from Mediterranean lakes: the ISOMED synthesis (Articolo in rivista)

Type
Label
  • Stable isotope records of Late Quaternary climate and hydrology from Mediterranean lakes: the ISOMED synthesis (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.quascirev.2008.09.005 (literal)
Alternative label
  • Roberts N.; Jones M.D.; Benkaddur A.; Eastwood W.J.; Filippi M.L.; Frogley M.R.; Lamb H.F.; Leng M.J.; Reed J.M.; Stein M.; Stevens L.; Valero- Garcè B.; Zanchetta G. (2008)
    Stable isotope records of Late Quaternary climate and hydrology from Mediterranean lakes: the ISOMED synthesis
    in Quaternary science reviews
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Roberts N.; Jones M.D.; Benkaddur A.; Eastwood W.J.; Filippi M.L.; Frogley M.R.; Lamb H.F.; Leng M.J.; Reed J.M.; Stein M.; Stevens L.; Valero- Garcè B.; Zanchetta G. (literal)
Pagina inizio
  • 2426 (literal)
Pagina fine
  • 2441 (literal)
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  • 27 (literal)
Rivista
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  • 15 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Roberts N. School of Geography, University of Plymouth, Plymouth, Devon PL4 8AA, UK M.D. Jones School of Geography, University of Nottingham, NG7 2RD, UK A. Benkaddour Departement de Geologie, Universite Cadi Ayyad, Bd. A. Khattabi BP 549, 40 000 Marrakech, Morocco W.J. Eastwood School of Geography, Earth & Environmental Sciences, University of Birmingham, B15 2TT, UK M.L. Filippi Museo Tridentino Scienze Naturali, Via Calepina 14, 38100 Trento, Italy M.R. Frogley Department of Geography, University of Sussex, Brighton BN1 9QJ, UK H.F. Lamb Institute of Geography and Earth Sciences, University of Wales, Aberystwyth SY23 3DB, UK M.J. Leng NERC Isotope Geosciences Laboratory, British Geological Survey, Nottingham NG12 5GG, UK M. Reed Department of Geography, University of Hull, Cottingham Road, Hull HU6 7RX, UK M. Stein Geological Survey of Israel, 30 Malkhe St., Jerusalem, Israel L. Stevens Department of Geological Sciences, California State University, 1250 Bellflower Blvd., Long Beach, CA 90840-3902, USA B. Valero-Garce Pyrenean Institute of Ecology-CSIC, Avda Montanana 1005, Apdo, Zaragoza E-50080, Spain G. Zanchetta Dipartimento di Scienze della Terra, University of Pisa, Via S. Maria 53, 56126 Pisa, Italy (literal)
Titolo
  • Stable isotope records of Late Quaternary climate and hydrology from Mediterranean lakes: the ISOMED synthesis (literal)
Abstract
  • Lake isotope records can be used to assess the spatial coherency of Late Quaternary climate change across the circum-Mediterranean region. We place modern and palaeo-data within a simple conceptual lake response model to show that the isotope hydrology of most Mediterranean lakes has been influenced strongly by water balance, even in those systems that are chemically dilute (i.e. freshwater). d18O data on biogenic and endogenic carbonates from 24 lake basins are used to reconstruct multi-millennial-scale trends since the LGM. While it is difficult to make direct comparisons between lake records in terms of single climatic parameters, coherent regional isotopic trends can be identified. During glacial times Mediterranean lakes deposited carbonates isotopically heavier in d18O compared to the Holocene, partly due to source area effects. Isotopic enrichment was most marked during intervals corresponding to the H1 and Younger Dryas events, confirming that Late Pleistocene cold stages in the North Atlantic region were marked by aridity around much of the Mediterranean. Almost all Mediterranean lake records shifted to more depleted isotopic values during the Last Glacial-Interglacial Transition (LGIT). This shift is the reverse of the trend which characterised the same transition in lakes from northern and central Europe, and suggests that temperature changes were not an important direct driver of Mediterranean lake isotopic records over glacial-interglacial timescales. In the early Holocene, many lakes in the eastern part of the region were more depleted isotopically than in recent millennia. This corresponds with marine sapropel formation, both chronologically and geographically, and implies that increases in local rainfall contributed significantly to the creation of a freshwater lid and anoxia in the East Mediterranean Sea. In contrast, no such pattern is currently apparent from lake isotope records from the West Mediterranean, suggesting a possible NW-SE contrast in climate history during the Holocene. (literal)
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