Arid
DOI10.1016/j.yqres.2013.03.003
Late Quaternary aeolian activity in Gonghe Basin, northeastern Qinghai-Tibetan Plateau, China
Qiang, Mingrui1; Chen, Fahu1; Song, Lei2; Liu, Xingxing1; Li, Mingzhi1; Wang, Qin1
通讯作者Qiang, Mingrui
来源期刊QUATERNARY RESEARCH
ISSN0033-5894
EISSN1096-0287
出版年2013
卷号79期号:3页码:403-412
英文摘要

Aeolian deposits at four sites in the Gonghe Basin were used to reconstruct the history of aeolian activity over the late Quaternary. These deposits include well-sorted aeolian sand, paleosols and/or loess. Aeolian sand represents dune-field expansion and/or dune buildup, whereas paleosols indicate stabilization of dunes, accompanying ameliorated vegetation cover. On the basis of 25 dates by optically stimulated luminescence (OSL), it appears that aeolian activities occurred episodically at 33.5, 20.3, 13.9, 11.8-11.0, 9.4, 7.8, and 5.7 (5.5) ka, which is largely consistent with the recent findings from the adjacent semi-arid areas. Aeolian sand mobility occurring during the early to mid Holocene conflicts with a climatic optimum inferred from lacustrine records in the northeastern Qinghai-Tibetan Plateau. This inconsistency may be resolved by interpreting aeolian activity as a response to decreased effective moisture due to enhanced evaporation, induced by higher summer insolation at that time, together with local terrain and its effects on moisture. Our results suggest that aeolian sand and paleosol cannot be simply ascribed to regional dry and wet climates, respectively, and they most likely reflect changes in effective moisture. (C) 2013 University of Washington. Published by Elsevier Inc. All rights reserved.


英文关键词Aeolian activity Aeolian sand Paleosol Luminescence dating Gonghe Basin
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000319308100009
WOS关键词POSSIBLE FORCING MECHANISMS ; HOLOCENE CLIMATIC-CHANGE ; ASIAN SUMMER MONSOON ; LAKE AREA ; HIGH-RESOLUTION ; NORTHERN CHINA ; OSL CHRONOLOGY ; LOESS PLATEAU ; PALEOCLIMATIC IMPLICATIONS ; ENVIRONMENTAL-CHANGES
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向Physical Geography ; Geology
来源机构兰州大学
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/179623
作者单位1.Lanzhou Univ, MOE Key Lab Western Chinas Environm Syst, Res Sch Arid Environm & Climate Change, Lanzhou 730000, Peoples R China;
2.Chinese Acad Geol Sci, Inst Hydrogeol & Environm Geol, Shijiazhuang 050061, Peoples R China
推荐引用方式
GB/T 7714
Qiang, Mingrui,Chen, Fahu,Song, Lei,et al. Late Quaternary aeolian activity in Gonghe Basin, northeastern Qinghai-Tibetan Plateau, China[J]. 兰州大学,2013,79(3):403-412.
APA Qiang, Mingrui,Chen, Fahu,Song, Lei,Liu, Xingxing,Li, Mingzhi,&Wang, Qin.(2013).Late Quaternary aeolian activity in Gonghe Basin, northeastern Qinghai-Tibetan Plateau, China.QUATERNARY RESEARCH,79(3),403-412.
MLA Qiang, Mingrui,et al."Late Quaternary aeolian activity in Gonghe Basin, northeastern Qinghai-Tibetan Plateau, China".QUATERNARY RESEARCH 79.3(2013):403-412.
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