DOI: 10.1016/j.quascirev.2014.01.016
Scopus记录号: 2-s2.0-84897584372
论文题名: An early advance of glaciers on Mount Akdaǧ, SW Turkey, before the global Last Glacial Maximum; insights from cosmogenic nuclides and glacier modeling
作者: Sarikaya M.A. ; Çiner A. ; Haybat H. ; Zreda M.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 88 起始页码: 96
结束页码: 109
语种: 英语
英文关键词: Chlorine-36
; Cosmogenic surface dating
; Glacier
; Last Glacial Maximum
; Lateglacial
; Moraine
; Mount Akdaǧ
; Paleoclimate
; Pre-LGM
; Turkey
Scopus关键词: Chlorine-36
; Last Glacial Maximum
; Lateglacial
; Moraine
; Paleoclimates
; Pre-LGM
; Surface dating
; Turkey
; Geology
; Glaciers
; Natural sciences
; Glacial geology
; glacial environment
; glaciation
; Last Glacial Maximum
; moraine
; proxy climate record
; sea level
; Turkey
英文摘要: For the first time in Turkey, we report an early advance of glaciers before the broadly defined global Last Glacial Maximum (LGM). Forty-one moraine boulders from three glacial valleys on Mount Akdaǧ (36.54°N, 29.57°E, 3016m), southwest coast of Turkey, were dated with cosmogenic 36Cl. Valleys on the north side of the mountain were filled with few km long glaciers that terminated at elevations of about 2000m above sea level (a.s.l). The pre-LGM glaciations reached their maximum positions (2150m a.s.l) by 35.1±2.5ka ago (1σ; ka=1000 calendar years). The glaciers readvanced during the global LGM and reached their farthest locations (2050m a.s.l) by around 21.7±1.2ka ago. Later, glaciers retreated and shortly stabilized during the Lateglacial at around 15.1±0.9ka ago. Using the glacier modeling and paleoclimate proxies from the Eastern Mediterranean, we estimated that if temperatures during the LGM were 8-11°C colder than modern, which is suggested by paleotemperature proxies from the region, precipitation was up to two times more than that of today. Previous estimates on southwest coast of Turkey indicate a similar precipitation value while central Turkey requires drier conditions, implying regional heterogeneity on LGM climates in Turkey. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60361
Appears in Collections: 过去全球变化的重建
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作者单位: Eurasia Institute of Earth Sciences, Istanbul Technical University, Sariyer, Istanbul 34469, Turkey; Department of Geography, Fatih University, Istanbul 34500, Turkey; Hydrology and Water Resources Department, University of Arizona, Tucson, AZ 85721, United States
Recommended Citation:
Sarikaya M.A.,Çiner A.,Haybat H.,et al. An early advance of glaciers on Mount Akdaǧ, SW Turkey, before the global Last Glacial Maximum; insights from cosmogenic nuclides and glacier modeling[J]. Quaternary Science Reviews,2014-01-01,88