DOI: 10.1002/grl.50492
论文题名: Rock varnish evidence for a Younger Dryas wet period in the Dead Sea basin
作者: Liu T. ; Broecker W.S. ; Stein M.
刊名: Geophysical Research Letters
ISSN: 0094-9084
EISSN: 1944-8815
出版年: 2013
卷: 40, 期: 10 起始页码: 2229
结束页码: 2235
语种: 英语
英文关键词: climate change
; Dead Sea
; Lake Lisan
; rock varnish
; wet event
; Younger Dryas
Scopus关键词: Dead sea
; Dead sea basins
; Mean sea level
; North Atlantic
; Rock varnishes
; Surface layers
; wet event
; Younger Dryas
; Lakes
; Manganese
; Sea level
; Varnish
; Climate change
; belt
; depositional environment
; glacial environment
; Holocene
; meridional circulation
; shoreline
; surface layer
; Dead Sea
英文摘要: Rock varnish from 14.6 to 13.2 ka recessional shorelines of late glacial Lake Lisan and fan delta surfaces between 280 and 365 m bmsl (meters below mean sea level) along the western margins of the Dead Sea contains replicable layering patterns, characterized by a low Mn and Ba orange/yellow surface layer and a high Mn and Ba dark basal layer. The deposition of the dark basal layers immediately after the lake recession represents a wet period coinciding with the Younger Dryas (YD) cooling (12.9-11.6 ka), manifesting the influence of midlatitude westerly winds in the eastern Mediterranean-central Levant (EM-CL). In contrast, varnish from the distal base of fan deltas contains only orange/yellow surface layers, diagnostic of the Holocene relatively dry climate. The absence of the dark basal layers in the varnish further indicates a YD high stand at ∼365 m bmsl and a lake level rise of at least 100 m from its Bølling-Ållerød lowstand. This rise stands in contrast to the abrupt drop of the lake level during the Heinrich (H1) cold event, illustrating the opposite response of the EM-CL climate to changes in the North Atlantic climate. The YD wet event most likely reflects a southward shift of the Atlantic meridional overturning circulation-modulated midlatitude westerly wind belt in the EM-CL region. © 2013 American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879951769&doi=10.1002%2fgrl.50492&partnerID=40&md5=a1d7c23d93efd09294ebd83a79aa4570
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6348
Appears in Collections: 气候减缓与适应
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作者单位: Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY 10964, United States
Recommended Citation:
Liu T.,Broecker W.S.,Stein M.. Rock varnish evidence for a Younger Dryas wet period in the Dead Sea basin[J]. Geophysical Research Letters,2013-01-01,40(10).