World Library  

Add to Book Shelf
Flag as Inappropriate
Email this Book

Hydrological Variability in Northern Levant Over the Past 250 Ka : Volume 7, Issue 3 (10/05/2011)

By Gasse, F.

Click here to view

Book Id: WPLBN0003985710
Format Type: PDF Article :
File Size: Pages 56
Reproduction Date: 2015

Title: Hydrological Variability in Northern Levant Over the Past 250 Ka : Volume 7, Issue 3 (10/05/2011)  
Author: Gasse, F.
Volume: Vol. 7, Issue 3
Language: English
Subject: Science, Climate, Past
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


APA MLA Chicago

Vidal, L., Campo, E. V., Develle, A., & Gasse, F. (2011). Hydrological Variability in Northern Levant Over the Past 250 Ka : Volume 7, Issue 3 (10/05/2011). Retrieved from

Description: CEREGE, UMR6635, CNRS – (Aix-Marseille Université-CNRS-IRD-CdeF), BP 80, 13545 Aix-en-Provence cedex 04, France. The Levant features sharp climatic gradients from North to South and from West to East resulting in a large environmental diversity. The lack of long-term record from the northern Levant limits our understanding of the regional response to glacial-interglacial boundary conditions in this key area. The 250 ka paleoenvironmental reconstruction presented here is a first step to fill this geographical gap.

The record comes from a 36 m lacustrine-palustrine sequence cored in the small intra-mountainous karstic basin of Yammoûneh (northern Lebanon). The paper combines times series of sediment properties, paleovegetation, and carbonate oxygen isotopes, to yield a comprehensive view of paleohydrologic-paleoclimatic fluctuations in the basin over the two last glacial-interglacial cycles. Efficient moisture was higher than today during interglacial peaks around 240, 215–220, ~130–120 ka and 11–9 ka (although under different Precipitation minus Evaporation balance). Moderate wetting events took place around 170, 150, 105–100, 85–75, 60–55 and 35 ka. The penultimate glacial period was generally wetter than the last glacial stage. Local aridity culminated from the LGM to 15 ka, possibly linked to water storage as ice in the surrounding highlands. An overall decrease in local water availability is observed from the profile base to top. Fluctuations in available water seem to be primarily governed by changes in local summer insolation controlled by the orbital eccentricity modulated by the precession cycle, and by changes in precipitation and temperature seasonality.

Our record is roughly consistent with long-term climatic fluctuations in northeastern Mediterranean lands, except during the penultimate glacial phase. It shares some features with speleothem records of western Israel. Conversely, after 130 ka, it is clearly out of phase with hydrological changes in the Dead Sea basin. Potential causes of these spatial heterogeneities, e.g., changes in atmospheric circulation, regional topographic patterns, site-specific climatic and hydrological factors, are discussed.

Hydrological variability in northern Levant over the past 250 ka

Abi-Saleh, B. and Safi, S.: Carte de la végétation du Liban, Ecologia Mediterranea, 14, 123–141, 1988.; Affek, H. P., Bar-Matthews, M., Ayalon, A., Matthews, A., and Eiler, J. M.: Glacial/interglacial temperature variations in Soreq cave speleothems as recorded by clumped isotope thermometry, Geochim. Cosmochim. Ac., 72(22), 5351–5360, 2008.; Alpert, P., Shafir, H., and Issahary, D.: Recent changes in the climate of the Dead Sea Valley, Climatic Change, 7, 1–25, 1997.; Almogi-Labin, A., Bar-Matthews, M., Shriki, D., Kolosovsky, E., Paterne, M., Schilman, B., Ayalon, A., Aiznshtat, Z., and Matthews, A.: Climatic variability during the last 90 ka on the southern and northern Levantine basin as evident from marine records and speleothems, Quaternary Sci. Rev., 28, 2882–2896, 2009.; Alpert, P. and Ziv, B.: The Sharav cyclone: observations and some theoretical considerations, J. Geophys. Res., 94, 18495–18514, 1989.; Aouad, A., Travi, Y., Blavoux, B., Job, J. O., and Najem, W.: Etude isotopique de la pluie et de la neige sur le Mont Liban : premiers résultats, Hydrological Sciences, 49, 429–441, 2004.; Besançon, J.: Le poljé de Yammo\^{u}né, Revue Libanaise de Géographie, 3, 3–62, 1968.; Aouad, A., Job, J. O., Khalil, S., Touma, T., Bitar, C., Bocquillon, C., and Najem, W.: Snow in Lebanon: a preliminary study of snow cover over Mount Lebanon and a simple snowmelt model, Hydrological Sciences, 50(3), 555–569, 2005.; Ayalon, A., Bar-Matthews, M., and Kaufman, A.: Climatic conditions during marine oxygen isotope 6 in the eastern Mediterranean region from the isotopic composition os speleeothems of Soreq Cave, Israel, Geology, 30, 303–306, 2.0.CO;2>doi:10.1130/0091-7613(2002)030<0303:CCDMOI>2.0.CO;2, 2002.; Badertscher, S., Fleitmann, D., Cheng, H., Edwards, R. L., Göktürk, O. M., Zumbühl, A., Leuenberger, M., and Tüysüz, O.: Pleistocene water intrusions from the Mediterranean and Caspian sea into the Black Sea, Nat. Geosci., 4, 236–239, doi:10.1038/NGEO1106, 2011.; Bar-Matthews, M. and Ayalon, A.: Speleothems as paleoclimate indicators, a case study from Soreq Cave located in the eastern Mediterranean region, Israel, in Past Climate through Europe and Africa, edited by: Battarbee R. W., Gasse, F., and Stickley, C. S., Springer, Dordrecht, 363–391, 2004.; Bar-Matthews, M., Ayalon, A., and Kaufman, A.: Timing and hydrological conditions of sapropel events in the Eastern Mediterranean, as evident from speleothems, Soreq Cave, Israel, Chem. Geol., 169, 145–156, 2000.; Bar-Matthews, M., Ayalon, A., Gilmour, M., Matthews, A., and Hawkesworth, C. J.: Sea-land oxygen isotopic relationship from planktonic foraminifera and speleothems in the Eastern Mediterranean region and their implication for paleorainfall during interglacial intervals, Geochim. Cosmochim. Ac., 67(17), 3181–3199, 2003.; Bar-Yosef, O.: The Natufian Culture in the Levant, Threshold to the origins of agriculture, Evol. Anthropol., 6, 169–177, 1998.; Bartov, Y., Goldstein, S. L., Stein, M., and Enzel, Y.: Catastrophic arid episodes in the Eastern Mediterranean linked with the North Atlantic Heinrich events, Geology, 31(5), 439–442, 2003.; Berger, A. L.: Long-term variations of daily insolation and Quaternary climatic changes, J. Atmos. Sci., 35, 2362–2367, 1978.; Begin, Z. B., Stein, M., Katz, A., Machlus, M., Rosenfeld, A., Buchbinder, B., and Bartov, Y.: Southward migration of rain tracks during the last glacial, revealed by salinity gradient in Lake Lisan (Dead Sea rift), Quaternary Sci. Rev., 23, 1627–1636, 2004.; Bookman, R., Bartov, Y., Enzel, Y., and Stein, M.: The levels of the late Quaternary lakes in the Dead Sea basin: two centuries of research, in: New Frontiers in Dead Sea Paleoenvironmental Research, edited by: Enzel, Y., Agnon, A., and Stein, M., Geological Society of America Special Paper, 401, 155–


Click To View

Additional Books

  • The Impact of Sahara Desertification on ... (by )
  • Multivariate Statistic and Time Series A... (by )
  • Stable Isotopes in Caves Over Altitudina... (by )
  • Results of Pmip2 Coupled Simulations of ... (by )
  • Climate Variability and Relationship wit... (by )
  • Impact of Precession on the Climate, Veg... (by )
  • What Could Have Caused Pre-industrial Bi... (by )
  • A 500 Kyr Record of Global Sea-level Osc... (by )
  • The B/CA Proxy for Past Seawater Carbona... (by )
  • Monsoon Response to Changes in Earth's O... (by )
  • Orbitally Tuned Timescale and Astronomic... (by )
  • Climate Change Between the Mid and Late ... (by )
Scroll Left
Scroll Right


Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.