地理科学 ›› 2015, Vol. 35 ›› Issue (5): 652-657.doi: 10.13249/j.cnki.sgs.2015.05.652
收稿日期:
2014-01-07
修回日期:
2014-03-01
出版日期:
2015-05-20
发布日期:
2015-05-20
作者简介:
作者简介:张正偲(1979-),男,甘肃靖远人,副研究员,博士,主要从事风沙物理和风沙地貌研究。E-mail:
基金资助:
Zheng-cai ZHANG(), Zhi-bao DONG
Received:
2014-01-07
Revised:
2014-03-01
Online:
2015-05-20
Published:
2015-05-20
摘要:
沙丘形态动力学特征是风沙地貌的重要研究内容之一,受观测技术等的限制,现有的关于沙丘形态动力学特征的研究成果还不能满足沙丘形成与演化过程研究的需要。利用三维超声风速仪对腾格里沙漠的横向沙丘表面气流特征进行野外观测,结果表明,沙丘脊线和迎风坡中部的气流均为未偏向流,而沙丘背风坡不同高度的气流包括反向流,偏向流和未偏向流。湍流强度、雷诺应力和气流丰富度随气流方向变化而变化,其在沙丘脊线和中部的变化趋势比较简单且有大致相似的规律,而其在沙丘背风坡不同高度比较复杂。
中图分类号:
张正偲, 董治宝. 横向沙丘表面气流湍流特征野外观测[J]. 地理科学, 2015, 35(5): 652-657.
Zheng-cai ZHANG, Zhi-bao DONG. Field Observation on the Flow Turbulence Characteristics Over Transverse Dune[J]. SCIENTIA GEOGRAPHICA SINICA, 2015, 35(5): 652-657.
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