Arid
DOI10.1002/gj.2795
History of moisture change derived from slope sediments of the eastern Gonghe Basin (northeastern Qinghai-Tibetan Plateau) during the last 17ka
Liu, Bing1,2; Jin, Heling1; Sun, Liangying1; Su, Zhizhu3; Zhang, Caixia1; Zhao, Shuang2
通讯作者Jin, Heling
来源期刊GEOLOGICAL JOURNAL
ISSN0072-1050
EISSN1099-1034
出版年2017
卷号52期号:4页码:583-593
英文摘要

The palaeosol-loess-aeolian sand sequence in the eastern Gonghe Basin, which is located at the convergence of the Asian summer monsoon, winter monsoon and the westerlies, reveals detailed moisture changes in the northeastern Qinghai-Tibetan Plateau (NETP) during the last 17ka. Analysis of magnetic susceptibility (MS), total organic carbon, carbonate content, grain size and geochemical parameters indicate that the region was dominated by an extremely dry climate during similar to 17.0-15.82ka, accompanying large-scale desert expansion in the last glacial maximum (LGM). Subsequently, the climate became generally dry during 15.82-14.6ka, an interval in which loess rapidly accumulated. Enhanced humidity occurred at 14.6ka, probably associated with increased strength of the East Asian summer monsoon. The region experienced slightly decreased moisture at around 6.5 and 5.8ka. After 2.7ka, the climate became wetter. This interpretation correlates with climatic records from lacustrine and aeolian deposits in the NETP during the LGM, the last deglaciation and the early-middle Holocene. High climatic moisture in the Late Holocene facilitated the formation of a well-developed palaeosol in the NETP. The effective moisture change in the Gonghe Basin is not simply ascribed to the influences of Asian summer monsoons; instead, it was possibly influenced by the interaction of evaporation and monsoonal precipitation forced by solar insolation variation. The balance between these variables was very influential on the effective moisture change in the closed inland basin of the NETP. Copyright (c) 2016 John Wiley & Sons, Ltd.


英文关键词Aeolian deposits Gonghe Basin moisture change forcing mechanism
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000405249500004
WOS关键词QUATERNARY AEOLIAN ACTIVITY ; HOLOCENE CLIMATIC-CHANGE ; LAKE AREA ; RECORD ; CHINA ; VEGETATION ; EVOLUTION ; DEPOSITS ; DESERT
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
来源机构兰州大学 ; 中国科学院西北生态环境资源研究院
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/199232
作者单位1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Desert & Desertificat, Lanzhou, Peoples R China;
2.Lanzhou Univ, MOE Key Lab Western Chinas Environm Syst, Lanzhou, Peoples R China;
3.Shanxi Univ, Sch Hist & Culture, Taiyuan, Peoples R China
推荐引用方式
GB/T 7714
Liu, Bing,Jin, Heling,Sun, Liangying,et al. History of moisture change derived from slope sediments of the eastern Gonghe Basin (northeastern Qinghai-Tibetan Plateau) during the last 17ka[J]. 兰州大学, 中国科学院西北生态环境资源研究院,2017,52(4):583-593.
APA Liu, Bing,Jin, Heling,Sun, Liangying,Su, Zhizhu,Zhang, Caixia,&Zhao, Shuang.(2017).History of moisture change derived from slope sediments of the eastern Gonghe Basin (northeastern Qinghai-Tibetan Plateau) during the last 17ka.GEOLOGICAL JOURNAL,52(4),583-593.
MLA Liu, Bing,et al."History of moisture change derived from slope sediments of the eastern Gonghe Basin (northeastern Qinghai-Tibetan Plateau) during the last 17ka".GEOLOGICAL JOURNAL 52.4(2017):583-593.
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