干旱区生态环境知识资源中心(Arid): Advancement of Megadunes and its Implications in the Badain Jaran Sand Sea

Arid

DOI	10.3389/feart.2021.811181
	Advancement of Megadunes and its Implications in the Badain Jaran Sand Sea
	Dong, Peng; Liang, Aimin; Zhou, Yali
通讯作者	Liang, AM (corresponding author)，Shaanxi Normal Univ, Sch Geog & Tourism, Xian, Peoples R China.
来源期刊	FRONTIERS IN EARTH SCIENCE
EISSN	2296-6463
出版年	2022
卷号	9
英文摘要	The tallest megadunes on the Earth are developed in China's Badain Jaran Sand Sea, as a result of which a prolonged curiosity exists with regards to the existence and migration of such large dunes. However, our present understanding of movement of aeolian bedforms is largely limited to dunes with height ranging from several to several tens of meters. Difficulties in understanding the movement of megadunes predominantly exists in the monitoring methods. This study presents the evidence of the megadune advancement and its rate in the Badain Jaran Sand Sea, estimated by optically stimulated luminescence (OSL) dating of sediments on the slipfaces of several megadunes. It is suggested that megadunes experience similar advancement as the commonly observed sand dunes; the rate of advancement of megadunes fits the rate-height relationship. The rate of advancement varies linearly with the reciprocal of megadune height, which has been confirmed for dunes, extending the advancement rate-height relationship to a previously blind range of dune size. In addition, the advancement rate of megadunes exhibits far-reaching implications for megadune formation. In combination with other morphometric evidences, it exemplifies the assumption that the development of megadunes is predominantly controlled by wind rather than other factors such as the underlying relief and ground water, as accepted by most researchers.
英文关键词	dune geomorphology dune movement advance rate-height relationship megadune formation Badain Jaran Sand Sea
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:000749404300001
WOS关键词	IMPERIAL-VALLEY ; DUNE MOVEMENT ; CHINA ; GEOMORPHOLOGY ; EVOLUTION ; RIPPLES ; DESERT
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376540
作者单位	[Dong, Peng] Hainan Normal Univ, Coll Life Sci, Haikou, Hainan, Peoples R China; [Dong, Peng] Hainan Normal Univ, Coll Geog & Environm Sci, Haikou, Hainan, Peoples R China; [Liang, Aimin; Zhou, Yali] Shaanxi Normal Univ, Sch Geog & Tourism, Xian, Peoples R China
推荐引用方式 GB/T 7714	Dong, Peng,Liang, Aimin,Zhou, Yali. Advancement of Megadunes and its Implications in the Badain Jaran Sand Sea[J],2022,9.
APA	Dong, Peng,Liang, Aimin,&Zhou, Yali.(2022).Advancement of Megadunes and its Implications in the Badain Jaran Sand Sea.FRONTIERS IN EARTH SCIENCE,9.
MLA	Dong, Peng,et al."Advancement of Megadunes and its Implications in the Badain Jaran Sand Sea".FRONTIERS IN EARTH SCIENCE 9(2022).