干旱区生态环境知识资源中心(Arid): Aeolian dust dynamics in the Fergana Valley, Central Asia, since similar to 30 ka inferred from loess deposits

Arid

DOI	10.1016/j.gsf.2021.101180
	Aeolian dust dynamics in the Fergana Valley, Central Asia, since similar to 30 ka inferred from loess deposits
	Li, Yue; Song, Yougui; Kaskaoutis, Dimitris G.; Zan, Jinbo; Orozbaev, Rustam; Tan, Liangcheng; Chen, Xiuling
通讯作者	Song, YG (corresponding author), Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China.
来源期刊	GEOSCIENCE FRONTIERS
ISSN	1674-9871
出版年	2021
卷号	12 期号:5
英文摘要	Knowledge of the interactions among atmospheric dynamics, dust emissions and climate system is essential to understand the physical mechanisms for the dust lifecycle, their role in loess formation as well as the predictions of future dust concentration. However, these issues still remain relatively poorly known in Central Asia (CA). The extensive loess deposits on the CA pediments provide a promising archive to explore atmospheric dust dynamics and climatic conditions in the past and their association with loess formation. This study investigates the granulometric and magnetic properties of a loess section (named Osh section) in the Fergana Valley, which provides a sensitive record of atmospheric dust dynamics since 30 ka based on radiometric (AMS C-14) dating. The frequency-dependent magnetic susceptibility (chi(fd)) and the mean grain size are used to reconstruct the broad-scale effective moisture and summer atmospheric dynamics pattern in CA, respectively. The results show that the precession forcing exerts a huge influence on the wind-regime variabilities in CA, but with different physical processes under the impact of the Northern Hemisphere ice sheet (NHIS) before and after 15 ka. The origin of the sedimentation rate variations in the Osh loess is also linked to the NHIS-modulated changes of the atmospheric circulation patterns. Either the strengthened westerlies or the increased surface roughness from higher vegetation cover in loess-deposition areas have significantly accelerated the loess accumulation. As a result, these complicated influence factors of sedimentation rate change in the Osh loess section, especially during the Holocene epoch, may hamper accessibility of the authentic dust emission flux and atmospheric dust concentration in CA. (C) 2021 ChinaUniversity of Geosciences (Beijing) and Peking University. Production and hosting by Elsevier B.V.
英文关键词	Dust dynamics Climate Atmospheric patterns Loess Ice volume Fergana Valley
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000692319300008
WOS关键词	ATMOSPHERIC CIRCULATION PATTERNS ; ARID CENTRAL-ASIA ; INTERGLACIAL-GLACIAL CYCLE ; GRAIN-SIZE DISTRIBUTIONS ; LATE QUATERNARY LOESS ; CHINESE LOESS ; PALEOSOL SEQUENCE ; MAGNETIC-SUSCEPTIBILITY ; LATE PLEISTOCENE ; NORTH-ATLANTIC
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
来源机构	中国科学院地球环境研究所 ; 中国科学院青藏高原研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368473
作者单位	[Li, Yue; Song, Yougui; Tan, Liangcheng] Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China; [Li, Yue; Song, Yougui; Tan, Liangcheng] CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China; [Kaskaoutis, Dimitris G.] Natl Observ Athens, Inst Environm Res & Sustainable Dev, Athens 11810, Greece; [Kaskaoutis, Dimitris G.] Univ Crete, Dept Chem, Environm Chem Proc Lab, Iraklion 71003, Greece; [Zan, Jinbo] Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China; [Zan, Jinbo] Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100101, Peoples R China; [Orozbaev, Rustam] Natl Acad Sci Kyrgyz Republ, Inst Geol, Bishkek 720040, Kyrgyzstan; [Orozbaev, Rustam] Res Ctr Ecol & Environm Cent Asia Bishkek, Bishkek 720040, Kyrgyzstan; [Chen, Xiuling] Fujian Normal Univ, Inst Geog, Fuzhou 350007, Peoples R China; [Chen, Xiuling] Fujian Normal Univ, State Key Lab ...
推荐引用方式 GB/T 7714	Li, Yue,Song, Yougui,Kaskaoutis, Dimitris G.,et al. Aeolian dust dynamics in the Fergana Valley, Central Asia, since similar to 30 ka inferred from loess deposits[J]. 中国科学院地球环境研究所, 中国科学院青藏高原研究所,2021,12(5).
APA	Li, Yue.,Song, Yougui.,Kaskaoutis, Dimitris G..,Zan, Jinbo.,Orozbaev, Rustam.,...&Chen, Xiuling.(2021).Aeolian dust dynamics in the Fergana Valley, Central Asia, since similar to 30 ka inferred from loess deposits.GEOSCIENCE FRONTIERS,12(5).
MLA	Li, Yue,et al."Aeolian dust dynamics in the Fergana Valley, Central Asia, since similar to 30 ka inferred from loess deposits".GEOSCIENCE FRONTIERS 12.5(2021).