Paleowind directions from the magnetic fabric of loess deposits in the western Chinese Loess Plateau and implications for dust provenance

Gao, Xinbo1; Hao, Qingzhen1,2,3; Ge, Junyi2,3,4; Han, Long5; Fu, Yu1,3; Wu, Xuechao1,3; Deng, Chenglong3,6; Guo, Zhengtang1,2,3; Markovic, Slobodan B.7,8

2021-09-01

10.1017/qua.2021.5

QUATERNARY RESEARCH   影响因子和分区

0033-5894

1096-0287

The aeolian loess-paleosol sequences in the Chinese Loess Plateau (CLP) are an excellent archive of variations in atmospheric circulation in the geological past. However, there is no consensus regarding the roles of the East Asian winter monsoon and westerly winds in transporting the dust responsible for loess deposition during glacial and interstadial periods. We conducted detailed measurements of the anisotropy of magnetic susceptibility (AMS) on two parallel loess profiles covering the most recent 130 ka in the western CLP to determine paleowind directions. Results show that the magnetic lineations of the loess and paleosol units in both sections are significantly clustered along the northwest to southeast direction. These observations demonstrate that the prevailing wind system responsible for dust transport in the western CLP was the northwesterly winter monsoon, rather than the westerly winds. The AMS-derived dust-bearing wind direction was relatively stable during the last glacial and interglacial cycle in the western CLP, consistent with sedimentary and AMS evidence from the eastern CLP. Accordingly, it is reasonable to conclude that large areas of deserts and Gobi deserts areas located in the upwind direction were the dominant sources for the aeolian deposits of the Loess Plateau.

Anisotropy of magnetic susceptibility (AMS) Loess Paleowind direction East Asian winter monsoon Chinese Loess Plateau

SCI ; EI

英语

其他

Strategic Priority Research Program of Chinese Academy of Sciences[XDB26000000] ; National Natural Science Foundation of China[41888101,41625010,41690114] ; National Key Research and Development Program[2017YFE0112800]

Physical Geography ; Geology

Geography, Physical ; Geosciences, Multidisciplinary

WOS:000701182800008

CAMBRIDGE UNIV PRESS

20214010975649

Arid regions ; Atmospheric thermodynamics ; Deposits ; Dust ; Glacial geology ; Landforms ; Magnetic anisotropy ; Magnetic susceptibility ; Magnetism

Meteorology:443 ; Atmospheric Properties:443.1 ; Water Resources:444 ; Air Pollution Sources:451.1 ; Geology:481.1 ; Soil Mechanics and Foundations:483 ; Thermodynamics:641.1 ; Magnetism: Basic Concepts and Phenomena:701.2 ; Physical Properties of Gases, Liquids and Solids:931.2

GEOSCIENCES

Web of Science

1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, 19 Beitucheng Western Rd, Beijing 100029, Peoples R China
2.CAS Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China
3.Univ Chinese Acad Sci, 19 A Yuquan Rd, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Key Lab Vertebrate Evolut & Human Origins, Inst Vertebrate Paleontol & Paleoanthropol, POB 643, Beijing 100044, Peoples R China
5.Southern Univ Sci & Technol, Sch Environm Sci & Engn, 1088 Xueyuan Rd, Shenzhen 518055, Peoples R China
6.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, 19 Beitucheng Western Rd, Beijing 100029, Peoples R China
7.Univ Novi Sad, Fac Sci, Trg Dositeja Obradovica 3, Novi Sad 21000, Serbia
8.Serbian Acad Arts & Sci, Knez Mihajiova 35, Belgrade 11000, Serbia

Gao, Xinbo,Hao, Qingzhen,Ge, Junyi,et al. Paleowind directions from the magnetic fabric of loess deposits in the western Chinese Loess Plateau and implications for dust provenance[J]. QUATERNARY RESEARCH,2021,103:74-87.

Gao, Xinbo.,Hao, Qingzhen.,Ge, Junyi.,Han, Long.,Fu, Yu.,...&Markovic, Slobodan B..(2021).Paleowind directions from the magnetic fabric of loess deposits in the western Chinese Loess Plateau and implications for dust provenance.QUATERNARY RESEARCH,103,74-87.

Gao, Xinbo,et al."Paleowind directions from the magnetic fabric of loess deposits in the western Chinese Loess Plateau and implications for dust provenance".QUATERNARY RESEARCH 103(2021):74-87.