globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2014.04.014
论文题名:
Characterization of the last deglacial transition in tropical East Africa: Insights from Lake Albert
作者: Berke M.A.; Johnson T.C.; Werne J.P.; Livingstone D.A.; Grice K.; Schouten S.; Sinninghe Damste´ J.S.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2014
卷: 409
起始页码: 1
结束页码: 8
语种: 英语
英文关键词: African paleoclimate ; Compound specific carbon and hydrogen isotopes ; Deglaciation ; Lake Albert ; Sedimentary molecular biomarkers ; TEX86 paleotemperature
英文摘要: New biomarker analyses from Lake Albert, East Africa spanning ~15-9ka show the most extreme, abrupt, multi-stage climate and environmental shifts during the last deglacial transition of anywhere in Africa. Records of hydroclimate expressed in compound specific δD values from terrestrial leaf waxes and a TEX86 paleotemperature record support multiple stages of pronounced drying and cooling from 13.8 to 11.5ka and demonstrate the dynamic behavior of the low latitude tropics during the deglaciation. The vegetation response, illustrated by compound specific δ13C values and fossil pollen records, was an expansion of C4 grassland when the region was cool and arid. These results advance our understanding of a spatially and temporally complex regional response to global climate forcing, suggesting weakening of the Indian Ocean monsoon at the end of the Pleistocene that coincides with a minor decrease in the rate of the Atlantic Meridional Overturning Circulation (AMOC) and during a time of stepwise cooling in the northern high latitudes. © 2014 Elsevier B.V.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69283
Appears in Collections:过去全球变化的重建

Files in This Item:

There are no files associated with this item.


作者单位: Large Lakes Observatory, University of Minnesota Duluth, Duluth, MN, United States; Dept. of Geological Sciences, University of Minnesota Duluth, Duluth, MN, United States; Dept. of Geology and Planetary Science, University of Pittsburgh, Pittsburgh, PA, United States; Dept. of Biology, Duke University, Durham, NC, United States; WA-Organic and Isotopic Geochemistry Centre, Dept. of Chemistry, Curtin University, Perth, Australia; NIOZ Royal Netherlands Institute for Sea Research, Dept. of Marine Organic Biogeochemistry, Netherlands; Dept. of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, Notre Dame, IN, United States

Recommended Citation:
Berke M.A.,Johnson T.C.,Werne J.P.,et al. Characterization of the last deglacial transition in tropical East Africa: Insights from Lake Albert[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2014-01-01,409
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Berke M.A.]'s Articles
[Johnson T.C.]'s Articles
[Werne J.P.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Berke M.A.]'s Articles
[Johnson T.C.]'s Articles
[Werne J.P.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Berke M.A.]‘s Articles
[Johnson T.C.]‘s Articles
[Werne J.P.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.