DOI: 10.1016/j.quascirev.2015.07.023
Scopus记录号: 2-s2.0-84938073812
论文题名: Eastern Mediterranean hydroclimate over the late glacial and Holocene, reconstructed from the sediments of Nar lake, central Turkey, using stable isotopes and carbonate mineralogy
作者: Dean J.R. ; Jones M.D. ; Leng M.J. ; Noble S.R. ; Metcalfe S.E. ; Sloane H.J. ; Sahy D. ; Eastwood W.J. ; Roberts C.N.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2015
卷: 124 起始页码: 162
结束页码: 174
语种: 英语
英文关键词: 4.2ka event
; 8.2ka event
; 9.3ka event
; Eastern Mediterranean
; Holocene
; Lake sediment
; Late Bronze Age
; Late glacial
; Mid Holocene Transition
; Oxygen and carbon isotopes
Scopus关键词: Broaches
; Bronze
; Carbonation
; Drought
; Glacial geology
; Isotopes
; Lakes
; Minerals
; Oceanography
; Sediments
; 4.2ka event
; 8.2ka event
; 9.3ka event
; Carbon isotopes
; Eastern Mediterranean
; Holocenes
; Lake sediments
; Late Bronze Age
; Late glacial
; Climate change
; carbonate
; climate variation
; cooling
; cyclogenesis
; Holocene
; lacustrine deposit
; late glacial
; maar
; Mediterranean environment
; mineralogy
; reconstruction
; stable isotope
; storm
; water budget
; westerly
; Younger Dryas
; Atlantic Ocean
; Atlantic Ocean (North)
; Nar Lake
; Nigde
; Turkey
英文摘要: There is a lack of high-resolution records of hydroclimate variability in the Eastern Mediterranean from the late glacial and early Holocene. More knowledge of the speed of climate shifts and the degree to which they were synchronous with changes in the North Atlantic or elsewhere is required to understand better the controls on Eastern Mediterranean climate. Using endogenic carbonate from a sediment sequence from Nar Gölü, a maar lake in central Turkey, dated by varve counting and uranium-thorium methods, we present high-resolution (~25 years) oxygen (δ18O) and carbon isotope records, supported by carbonate mineralogy data, spanning the late glacial and Holocene. δ18Ocarbonate at Nar Gölü has been shown previously to be a strong proxy for regional water balance. After a dry period (i.e. evaporation far exceeding precipitation) in the Younger Dryas, the data show a transition into the relatively wetter early Holocene. In the early Holocene there are two drier periods that appear to peak at ~9.3ka and ~8.2ka, coincident with cooling 'events' seen in North Atlantic records. After this, and as seen in other records from the Eastern Mediterranean, there is a millennial-scale drying trend through the Mid Holocene Transition. The relatively dry late Holocene is punctuated by centennial-scale drought intervals, at the times of 4.2ka 'event' and Late Bronze Age societal 'collapse'. Overall, we show that central Turkey is drier when the North Atlantic is cooler, throughout this record and at multiple timescales, thought to be due to a weakening of the westerly storm track resulting from reduced cyclogenesis in the North Atlantic. However, some features, such as the Mid Holocene Transition and the fact the early Holocene dry episodes at Nar Gölü are of a longer duration than the more discrete 'events' seen in North Atlantic records, imply there are additional controls on Eastern Mediterranean hydroclimate. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59853
Appears in Collections: 过去全球变化的重建
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作者单位: NERC Isotope Geosciences Facilities, British Geological Survey, Nottingham, United Kingdom; School of Geography, University of Nottingham, United Kingdom; Centre for Environmental Geochemistry, University of Nottingham, United Kingdom; School of Geography, Earth and Environmental Sciences, University of Birmingham, United Kingdom; School of Geography, Earth and Environmental Sciences, University of Plymouth, United Kingdom
Recommended Citation:
Dean J.R.,Jones M.D.,Leng M.J.,et al. Eastern Mediterranean hydroclimate over the late glacial and Holocene, reconstructed from the sediments of Nar lake, central Turkey, using stable isotopes and carbonate mineralogy[J]. Quaternary Science Reviews,2015-01-01,124