干旱区生态环境知识资源中心(Arid): Geomorphological Evolution Revealed by Aeolian Sedimentary Structure in Badain Jaran Desert on Alxa Plateau, Northwest China

Arid

	Geomorphological Evolution Revealed by Aeolian Sedimentary Structure in Badain Jaran Desert on Alxa Plateau, Northwest China
	Bai Yang; WANG Naiang; Liao Kongtai; Klenk Patrick
来源期刊	Chinese Geographical Science
ISSN	1002-0063
出版年	2011
卷号	21 期号:3 页码:267-278
英文摘要	The Badain Jaran Desert,located in the Alxa Plateau,Northwest China,features mega-dunes and a unique dune-lake alternation landscape.This paper presented the aeolian sediment structures of three representative dunes in the Badain Jaran Desert using ground-penetrating radar (GPR).We processed and analyzed the GPR data and investigated the feasibility of using integrated GPR and sedimentological data to reconstruct dunes structure,sedimentary environment and geomorphological evolution.The results show that the internal structures of star dune and transverse dune represent various stages of mega-dune evolution: the main deposition processes of mega-dune are similar to those of transverse dunes but have a more complicated mechanism of sand transport and deposition because of the superimposition of dunes;the upper section of the mega-dune has a structure similar to that of star dune,with vertical aggradations on top.Diffraction hyperbolae in the GPR profile indicates that the presence of ancient dunes characterized by calcareous cementation layers is involved in the maintenance of mega-dunes,and water levels,shown by continuous,sub-horizontal GPR reflections,are supposed to be closely related to mega-dunes and the interdune lakes.Outcrop of wet sand and horizontal stratifications on the GPR image indicate moisture potentials with different levels inside mega-dunes.The multiplex geomorphology in the Badain Jaran Desert is the result of global climatic undulation,the unique geographical location,the geological structural features,etc.
英文关键词	Badain Jaran Desert Ground-Penetrating Radar (GPR) mega-dunes sedimentary structure geomor- phological evolution
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Geology
CSCD记录号	CSCD:4427492
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335122
作者单位	Bai Yang, College of Earth and Environmental Sciences, Center for Hydrologic Cycle and Water Resources in Arid Region, Lanzhou University, Lanzhou, Gansu 730000, China.; WANG Naiang, College of Earth and Environmental Sciences, Center for Hydrologic Cycle and Water Resources in Arid Region, Lanzhou University, Lanzhou, Gansu 730000, China.; Liao Kongtai, Forestry Scientific Technology Popularization Master Station, Gansu Province, Lanzhou, Gansu 730046, China.; Klenk Patrick, Institute of Environmental Physics, INF 229, University of Heidelberg,Germany, Heidelberg, 69120, Germany.
推荐引用方式 GB/T 7714	Bai Yang,WANG Naiang,Liao Kongtai,et al. Geomorphological Evolution Revealed by Aeolian Sedimentary Structure in Badain Jaran Desert on Alxa Plateau, Northwest China[J],2011,21(3):267-278.
APA	Bai Yang,WANG Naiang,Liao Kongtai,&Klenk Patrick.(2011).Geomorphological Evolution Revealed by Aeolian Sedimentary Structure in Badain Jaran Desert on Alxa Plateau, Northwest China.Chinese Geographical Science,21(3),267-278.
MLA	Bai Yang,et al."Geomorphological Evolution Revealed by Aeolian Sedimentary Structure in Badain Jaran Desert on Alxa Plateau, Northwest China".Chinese Geographical Science 21.3(2011):267-278.