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| DOI | 10.1029/2020GL088644 |
| Aeolian Creep Transport: Theory and Experiment | |
| Wang P.; Zhang J.; Dun H.; Herrmann H.J.; Huang N. | |
| 发表日期 | 2020 |
| ISSN | 0094-8276 |
| 卷号 | 47期号:15 |
| 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. © 2020. The Authors. |
| 英文关键词 | Wind tunnels; Analytic expressions; Geophysical phenomena; Layer thickness; Power-scaling; Quantitative prediction; Steady state; Transport rate; Wind tunnel experiment; Creep; bedform; creep; desertification; eolian deposit; model; steady-state equilibrium; wind tunnel |
| 语种 | 英语 |
| 来源期刊 | Geophysical Research Letters
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/170021 |
| 作者单位 | Key Laboratory of Mechanics on Disaster and Environment in Western China, College of Civil Engineering and Mechanics, Lanzhou University, Lanzhou, China; School of Science, Lanzhou University of Technology, Lanzhou, China; PMMH. ESPCI, Paris, France; Departamento de Física, Universidade Federal do Ceara, Fortaleza, Brazil |
| 推荐引用方式 GB/T 7714 | Wang P.,Zhang J.,Dun H.,et al. Aeolian Creep Transport: Theory and Experiment[J],2020,47(15). |
| APA | Wang P.,Zhang J.,Dun H.,Herrmann H.J.,&Huang N..(2020).Aeolian Creep Transport: Theory and Experiment.Geophysical Research Letters,47(15). |
| MLA | Wang P.,et al."Aeolian Creep Transport: Theory and Experiment".Geophysical Research Letters 47.15(2020). |
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