Arid
DOI10.1016/j.aeolia.2015.11.002
Yardangs in the Qaidam Basin, northwestern China: Distribution and morphology
Li, Jiyan1; Dong, Zhibao2; Qian, Guangqiang2; Zhang, Zhengcai2; Luo, Wanyin2; Lu, Junfeng2; Wang, Meng2
通讯作者Li, Jiyan
来源期刊AEOLIAN RESEARCH
ISSN1875-9637
EISSN2212-1684
出版年2016
卷号20页码:89-99
英文摘要

The northwestern Qaidam Basin exposes one of the largest and highest elevation yardang fields on Earth. The aim of the present study was to describe the distribution and morphology of these yardangs, and analyze the factors responsible for the distribution pattern of these aeolian landforms. The yardang fields are bounded by piedmont alluvial-diluvial fans from the mountain ranges surrounding the basin, except in the south, where they are bounded by dune fields, dry salt flats, lakes, and rivers. This distribution pattern can be attributed to regional tectogenesis and its corresponding environmental impacts. The morphology of the yardangs varies considerably in response to the diverse factors that control their formation and evolution. Long-ridge yardangs are mainly located in the northernmost part of the yardang field, and the long ridges are gradually dissected into smaller ridges in the downwind direction. Further downwind, the convergence of northerly and northwesterly winds and the effects of temporary runoff cause the ridges to gradually transition into mesa yardangs. Saw-toothed crests, and conical and pyramidal yardangs, occur in groups on folded brachyanticlinal structures. Typical whaleback yardangs are found in the southeast, at the northern margin of Dabuxun Lake. Morphological parameters vary among the yardang types. The orientation of the yardangs in the northernmost area is nearly N-S, with a transition towards NW-SE in the southernmost area in response to a change in the dominant wind direction that results from the orientations and positions of the mountain ranges that surround the basin. (C) 2016 Elsevier B.V. All rights reserved.


英文关键词Yardangs Aeolian erosion landforms Dune fields Aeolian geomorphology Qaidam Basin
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000372381500009
WOS关键词NE TIBETAN PLATEAU ; EOLIAN FEATURES ; WESTERN DESERT ; WIND EROSION ; CORE SG-1 ; VENUS ; MARS ; MAGNETOSTRATIGRAPHY ; DEPRESSION ; EVOLUTION
WOS类目Geography, Physical
WOS研究方向Physical Geography
来源机构中国科学院西北生态环境资源研究院
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/191002
作者单位1.Taiyuan Normal Univ, Jinzhong 030619, Shanxi, Peoples R China;
2.Chinese Acad Sci, Key Lab Desert & Desertificat, Cold & Arid Reg Environm & Engn Res Inst, 320 West Donggang Rd, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式
GB/T 7714
Li, Jiyan,Dong, Zhibao,Qian, Guangqiang,et al. Yardangs in the Qaidam Basin, northwestern China: Distribution and morphology[J]. 中国科学院西北生态环境资源研究院,2016,20:89-99.
APA Li, Jiyan.,Dong, Zhibao.,Qian, Guangqiang.,Zhang, Zhengcai.,Luo, Wanyin.,...&Wang, Meng.(2016).Yardangs in the Qaidam Basin, northwestern China: Distribution and morphology.AEOLIAN RESEARCH,20,89-99.
MLA Li, Jiyan,et al."Yardangs in the Qaidam Basin, northwestern China: Distribution and morphology".AEOLIAN RESEARCH 20(2016):89-99.
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