干旱区生态环境知识资源中心(Arid): Late Quaternary hydroclimatic variations in the hyper-arid Dunhuang Basin, northwestern China

Arid

DOI	10.1016/j.palaeo.2023.111693
	Late Quaternary hydroclimatic variations in the hyper-arid Dunhuang Basin, northwestern China
	Yi, Shuangwen; Wang, Xiaoyong; Xu, Zhiwei; Wu, Jiang; Lu, Huayu
通讯作者	Yi, SW
来源期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN	0031-0182
EISSN	1872-616X
出版年	2023
卷号	626
英文摘要	The changes in paleoclimate and their driving mechanisms in northwestern (NW) China since the Late Quaternary remain unclear and controversial. This is due to the scarcity of relatively continuous sedimentary records with high-resolution chronological controls in this hyper-arid region. To address this gap, a new sedimentary record was drilled from Yitang Lake in the Dunhuang Basin of NW China, and used to reconstruct the long history of regional hydroclimatic changes since the Late Pleistocene. A comprehensive high-resolution geochronology of the upper part of the drilling core indicates a significant sedimentary hiatus between approximately 100 ka and 23 ka, likely due to the dry and harsh environmental conditions during the Last Glacial period (MIS 4 to MIS 2). Since then, the study area has experienced a relatively dry Late Glacial period (similar to 23-11 ka), gradually wetter early Holocene (similar to 11-8 ka), and moist mid-Holocene (similar to 8-5 ka), followed by a drying trend after approximately 5 ka. Hydrological variations in this area since the Late Quaternary were mainly controlled by changes in precipitation and glacier meltwater from the northeastern Tibetan Plateau. These alterations were ultimately regulated by shifts in atmospheric circulation patterns, as well as the dynamic interplay between the westerlies and the East Asian summer monsoon at both orbital and suborbital scales.
英文关键词	Paleoclimate change Luminescence dating Hydroclimatic variations Dunhuang Basin
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001055180100001
WOS关键词	OPTICALLY STIMULATED LUMINESCENCE ; LOESS-PALEOSOL SEQUENCE ; HOLOCENE MOISTURE EVOLUTION ; DOSE-RESPONSE CURVES ; NE TIBETAN PLATEAU ; SHULE RIVER-BASIN ; CENTRAL-ASIA ; K-FELDSPAR ; SINGLE-ALIQUOT ; IRSL SIGNALS
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS研究方向	Physical Geography ; Geology ; Paleontology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397962
推荐引用方式 GB/T 7714	Yi, Shuangwen,Wang, Xiaoyong,Xu, Zhiwei,et al. Late Quaternary hydroclimatic variations in the hyper-arid Dunhuang Basin, northwestern China[J],2023,626.
APA	Yi, Shuangwen,Wang, Xiaoyong,Xu, Zhiwei,Wu, Jiang,&Lu, Huayu.(2023).Late Quaternary hydroclimatic variations in the hyper-arid Dunhuang Basin, northwestern China.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,626.
MLA	Yi, Shuangwen,et al."Late Quaternary hydroclimatic variations in the hyper-arid Dunhuang Basin, northwestern China".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 626(2023).