横向沙丘生长与迁移的解析模型。
An analytical model for the growth and migration of a transverse dune.
作者信息
Ning Wen-Xiao, Liu Xu-Yang, Wang Zhen-Ting
机构信息
Northwest Institute of Eco-Environment and Resources, CAS, 730000, Lanzhou, P.R. China.
出版信息
Eur Phys J E Soft Matter. 2019 Apr 4;42(4):42. doi: 10.1140/epje/i2019-11804-1.
PMID:30945008
Abstract
The growth and migration speed formulae for a 2-d transverse dune are derived under the assumptions of shape similarity, the near surface airflow independent of height, and the 100% sand trapping efficiency of lee face during dune evolution. Although very simple, this analytical model can quantificationally reflect the field investigations of barchan migrations and the chronological data of mega-dune growth.
摘要
在形状相似、近地表气流与高度无关以及沙丘演化过程中背风面沙粒捕获效率为100%的假设下，推导了二维横向沙丘的生长和迁移速度公式。尽管这个解析模型非常简单，但它能够定量反映新月形沙丘迁移的实地调查结果以及巨型沙丘生长的年代数据。
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