官方微信
中国沙漠 ›› 2003, Vol. 23 ›› Issue (2): 118-120.
• 研究论文 • 上一篇 下一篇
凌裕泉, 屈建军, 李长治
收稿日期:
修回日期:
出版日期:
发布日期:
作者简介:
基金资助:
LING Yu-quan, QU Jian-jun, LI Chang-zhi
Received:
Revised:
Online:
Published:
摘要： 近景摄影能够在无干扰的条件下,精确地测定正在发育阶段的风成沙纹,以波动方式整体移动的平均移动速度VR(cm·min-1),和相应的沙纹波长L(cm)波高Δh(mm)及其平均值。同时,求得沙纹移动速度VR与局地风速VL之间的实验关系式为VR=158×(VL-5.5)0.67,沙纹移动是缓慢的,其数量级变化于10-1~101cm·min-1之间。沙纹波长与波高与直接测定值相当吻合。
关键词: 近景摄影, 沙纹移动
Abstract: The study of sand ripple movement is very important in the research of aeolian sand geomorphology.Experimental results showed that the mean migration velocity of sand ripples VR(cm·min-1),corresponding wave length L(cm) and wave height Δh as well as their mean values of developing sand ripples can be precisely determined under undisturbed condition.From the study we have obtained the empirical formula concerning VR and local wind velocity VL,VR=1.58(VL-5.5)0.67.The migration of sand ripples is slow,whose velocity ranging from 10-1~101 cm·min-1.The calculated wave length and wave height of sand ripples are consistent with directly measured results in wind tunnel and field.
Key words: close shoot method, sand ripple movement
中图分类号:
P931.92
凌裕泉, 屈建军, 李长治. 应用近景摄影法研究沙纹的移动[J]. 中国沙漠, 2003, 23(2): 118-120.
LING Yu-quan, QU Jian-jun, LI Chang-zhi. Study on Sand Ripple Movement with Close Shoot Method[J]. JOURNAL OF DESERT RESEARCH, 2003, 23(2): 118-120.
0 / / 推荐
导出引用管理器 EndNote|Ris|BibTeX
链接本文: http://www.desert.ac.cn/CN/
http://www.desert.ac.cn/CN/Y2003/V23/I2/118
甘公网安备 62010202000688号