Arid
DOI10.1002/esp.5351
Source of the aeolian sediments in the Yarlung Tsangpo valley and its potential dust contribution to adjacent oceans
Ling, Zhiyong; Yang, Shengli; Xia, Dunsheng; Wang, Xin; Chen, Fahu
Corresponding AuthorLing, ZY (corresponding author),Lanzhou Univ, Coll Earth & Environm Sci, Minist Educ, Key Lab Western Chinas Environm Syst, Lanzhou 730000, Peoples R China.
JournalEARTH SURFACE PROCESSES AND LANDFORMS
ISSN0197-9337
EISSN1096-9837
Year Published2022-03
Abstract in EnglishSurface sediments such as aeolian sand, loess/sandy loess, and fluvial/alluvial clastics are widespread in the Yarlung Tsangpo (YT) catchment and across the Tibetan Plateau (TP). However, it is debated whether the source of the aeolian sediments is local or remote, involving transport across large regions, and whether the surface sediments, especially aeolian deposits, are a major source of global dust. Here, we use strontium-neodymium (Sr-Nd) isotopic analysis and modern observations of dust emissions to investigate the provenance of aeolian sediments from the YT catchment and adjacent areas during different periods (modern, Holocene, Late Pleistocene), and the relationship between surface sediments of the TP and the dust component of sediments in the Japan Sea and the North Pacific Ocean. Strontium-87/strontium-86 (Sr-87/Sr-86) and neodymium isotopic ratio (epsilon(Nd)) show a wide range of variation in different areas (Sr-87/Sr-86 varies from 0.707996 to 0.731078, and epsilon(Nd) from -6.2 to -13.6), influenced by the composition of the clastic material derived from the local parent rock; additionally, there are no significant variations between size fractions. Due to local recycling the aeolian sedimentary systems in the southern TP are supplied with clastic material from proximal sources, and they are unlikely to receive large quantities of long-range dust transported from regions such as the Taklimakan desert in Central Asia. Dust emission occurs mainly in the dry season (from March to May) and the dust is carried on the upper-level westerly jet stream and then deposited downwind in the Japan Sea and the North Pacific Ocean, thus contributing to global dust.
Keyword in Englishaeolian deposits provenance tracing Sr-Nd isotopes transport mode Yarlung Tsangpo
SubtypeArticle ; Early Access
Language英语
Indexed BySCI-E
WOS IDWOS:000762589300001
WOS KeywordCHINESE LOESS PLATEAU ; TIBETAN PLATEAU ; ISOTOPIC COMPOSITIONS ; TRANSPORT ; ND ; SR ; PROVENANCE ; EVOLUTION ; DEPOSITION ; EROSION
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary
WOS Research AreaPhysical Geography ; Geology
Document Type期刊论文
Identifierhttp://119.78.100.177/qdio/handle/2XILL650/377387
Affiliation[Ling, Zhiyong; Yang, Shengli; Xia, Dunsheng; Wang, Xin; Chen, Fahu] Lanzhou Univ, Coll Earth & Environm Sci, Minist Educ, Key Lab Western Chinas Environm Syst, Lanzhou 730000, Peoples R China; [Ling, Zhiyong] Chinese Acad Sci, Qinghai Inst Salt Lakes, Qinghai Prov Key Lab Geol & Environm Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining, Peoples R China; [Chen, Fahu] Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Key Lab Alpine Ecol, Beijing, Peoples R China; [Chen, Fahu] Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Ling, Zhiyong,Yang, Shengli,Xia, Dunsheng,et al. Source of the aeolian sediments in the Yarlung Tsangpo valley and its potential dust contribution to adjacent oceans[J],2022.
APA Ling, Zhiyong,Yang, Shengli,Xia, Dunsheng,Wang, Xin,&Chen, Fahu.(2022).Source of the aeolian sediments in the Yarlung Tsangpo valley and its potential dust contribution to adjacent oceans.EARTH SURFACE PROCESSES AND LANDFORMS.
MLA Ling, Zhiyong,et al."Source of the aeolian sediments in the Yarlung Tsangpo valley and its potential dust contribution to adjacent oceans".EARTH SURFACE PROCESSES AND LANDFORMS (2022).
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