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中国沙漠 ›› 1993, Vol. 13 ›› Issue (3): 18-24.

• 论文 • 上一篇    下一篇

新月形沙丘丘表流场与沙丘蚀积特征

赵景峰, 李崇舜, 周兴佳, 雷加强   

  1. 中国科学院新疆生物土壤沙漠研究所, 乌鲁木齐
  • 出版日期:1993-09-20 发布日期:1993-09-20

Study On the Fluid Field and Deflation Characteristics on Barchanic Dune Surface

Zhao Jingfeng, Li Chongshun, Zhou Xingjia, Lei Jiaqiang   

  1. Xingjiang Institute of Biology, Pedolog and Desert Research, Academy of Science, Urumqi
  • Online:1993-09-20 Published:1993-09-20

摘要: 对新月形沙丘和沙丘链丘表流场风向、风速和蚀积量进行测定。迎风坡均表现风蚀,背风坡和兽角处表现堆积,蚀积特征、速度与流场中风速、风向相吻合。

关键词: 新月形沙丘, 新月形沙丘链, 流场, 蚀积量

Abstract: Fixed site observation of sand dunes is an essential link in the studies of sand dune movement. In order to the understand deflation and deposition processes on sand dune surface, three typical shifting sand dunes near Qira Oasis at southern margin of Taklimakan Desert were selected as the observation fields. Of these three sand dunes, two are barchans and one is barchanic chain, with a height ranging between 0.73-3.9m. Under the influence of prevailing wind these sand dunes are migrating towards ESE direction. Through observation of the fluid field, grain size distribution sand transport rate and erosion-deposition changes the authors analysed their variation characteristics and correlation.