Aeolian creep transport: Theory and Experiment | |
Wang, Peng3,4; Jie Zhang4; Hongchao Dun4; Hans J. Herrmann1,2; Ning Huang4 | |
刊名 | GEOPHYSICAL RESEARCH LETTERS |
2020-08 | |
卷号 | 47期号:15 |
关键词 | aeolian sand transport, scaling laws,creep |
ISSN号 | 00948276 |
DOI | doi.org/10.1029/2020GL088644 |
英文摘要 | Aeolian sand transport drives geophysical phenomena, such as bedform evolution and desertification. Creep plays a crucial, yet poorly understood, role in this process. We present a model for aeolian creep, making quantitative predictions for creep fluxes, which we verify experimentally. We discover that the creep transport rate scales like the Shields number to the power 5/2, clearly different from the laws known for saltation. We derive this 5/2 power scaling law from our theory and confirm it with meticulous wind tunnel experiments. We calculate the creep flux and layer thickness in steady state exactly and for the first time study the relaxation of the flux toward saturation, obtaining an analytic expression for the relaxation time. |
URL标识 | 查看原文 |
WOS研究方向 | Geology |
语种 | 英语 |
出版者 | Blackwell Publishing Ltd |
WOS记录号 | WOS:000560376100013 |
内容类型 | 期刊论文 |
源URL | [http://ir.lut.edu.cn/handle/2XXMBERH/103346] |
专题 | 兰州理工大学 |
通讯作者 | Hans J. Herrmann; Ning Huang |
作者单位 | 1.Departamento de Física, Universidade Federal do Ceara, Fortaleza, Brazil 2.PMMH. ESPCI, Paris, France 3.School of Science, Lanzhou University of Technology, 4.Key Laboratory of Mechanics on Disaster and Environment in Western China, College of Civil Engineering and Mechanics, Lanzhou University, Lanzhou, |
推荐引用方式 GB/T 7714 | Wang, Peng,Jie Zhang,Hongchao Dun,et al. Aeolian creep transport: Theory and Experiment[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(15). |
APA | Wang, Peng,Jie Zhang,Hongchao Dun,Hans J. Herrmann,&Ning Huang.(2020).Aeolian creep transport: Theory and Experiment.GEOPHYSICAL RESEARCH LETTERS,47(15). |
MLA | Wang, Peng,et al."Aeolian creep transport: Theory and Experiment".GEOPHYSICAL RESEARCH LETTERS 47.15(2020). |
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