Temporal-spatial variations in aeolian flux on the Chinese Loess Plateau during the last 150 ka | |
Liu, Yuming1,2; Liu, Xingxing1,3; Ma, Long4,5; Kang, Shugang1,3; Qiang, Xiaoke1,3; Guo, Fei1,2; Sun, Youbin1,3 | |
通讯作者 | Sun, Youbin(sunyb@ieecas.cn) |
2020-05-01 | |
发表期刊 | GEOLOGICAL MAGAZINE |
ISSN | 0016-7568 |
卷号 | 157期号:5页码:757-767 |
摘要 | Aeolian dust deposits from continent and ocean have been extensively investigated to reflect past changes in source aridity and atmospheric circulations. Aeolian flux (AF) as a quantitative dust proxy has been widely used in both palaeoenvironmental reconstruction and numerical simulation. However, available AF data on the Chinese Loess Plateau (CLP) is too limited to assess the temporal-spatial variations at glacial-interglacial timescales, and therefore cannot be used as robust input parameters in palaeoclimate models. Here we investigate eight loess profiles along two N-S-aligned transects on the CLP to quantitatively estimate the AF variations over the last glacial-interglacial cycle. We first establish a refined chronological framework based on optically stimulated luminescence chronology and pedostratigraphic correlation. AF was then estimated by multiplying the sedimentation rate and bulk density. The results show that the AF increases from 2-18 g cm(-2) ka(-1) in the southeastern CLP to 14-105 g cm(-2) ka(-1) in the northwestern CLP. At glacial-interglacial scales, the AF varies from 2-20 g cm(-2) ka(-1) during the last interglacial to 8-105 g cm(-2) ka(-1) in the last glaciation. Due to more spatial coverage and better age constraints, our AF data can be used to refine other AF datasets and to improve the proxy-model comparison. |
关键词 | Chinese Loess Plateau aeolian flux temporal-spatial variations glacial-interglacial cycle |
DOI | 10.1017/S0016756819001067 |
关键词[WOS] | GRAIN-SIZE DISTRIBUTION ; NORTH PACIFIC-OCEAN ; LATE PLEISTOCENE ; DUST DEPOSITION ; INTERGLACIAL PALEOSOL ; EQUATORIAL PACIFIC ; EOLIAN DEPOSITION ; MONSOON CLIMATE ; TIBETAN PLATEAU ; ASIAN MONSOON |
收录类别 | SCI ; SCI |
语种 | 英语 |
资助项目 | National Key Research and Development Program of China[2016YFA0601902] ; National Natural Science Foundation of China[41525008] ; National Natural Science Foundation of China[41472163] |
WOS研究方向 | Geology |
项目资助者 | National Key Research and Development Program of China ; National Natural Science Foundation of China |
WOS类目 | Geosciences, Multidisciplinary |
WOS记录号 | WOS:000534526500006 |
出版者 | CAMBRIDGE UNIV PRESS |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/14788 |
专题 | 古环境研究室 第四纪科学与全球变化卓越创新中心 |
通讯作者 | Sun, Youbin |
作者单位 | 1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China 4.Northwest Univ, State Key Lab Continental Dynam, Dept Geol, Xian 710069, Peoples R China 5.Northwest Univ, Shaanxi Key Lab Early Life & Environm, Dept Geol, Xian 710069, Peoples R China |
推荐引用方式 GB/T 7714 | Liu, Yuming,Liu, Xingxing,Ma, Long,et al. Temporal-spatial variations in aeolian flux on the Chinese Loess Plateau during the last 150 ka[J]. GEOLOGICAL MAGAZINE,2020,157(5):757-767. |
APA | Liu, Yuming.,Liu, Xingxing.,Ma, Long.,Kang, Shugang.,Qiang, Xiaoke.,...&Sun, Youbin.(2020).Temporal-spatial variations in aeolian flux on the Chinese Loess Plateau during the last 150 ka.GEOLOGICAL MAGAZINE,157(5),757-767. |
MLA | Liu, Yuming,et al."Temporal-spatial variations in aeolian flux on the Chinese Loess Plateau during the last 150 ka".GEOLOGICAL MAGAZINE 157.5(2020):757-767. |
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