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DOI | 10.1029/2020GL091224 |
Field Observation Evidence for Kink Points in the Vertical Kinetic Energy Flux Profiles of Wind-Blown Sand Over Gobi and Its Significance | |
Tan, Lihai; Qu, Jianjun; Wang, Tao; Zhang, Kai; An, Zhishan | |
通讯作者 | Wang, T (通讯作者),Chinese Acad Sci, Key Lab Desert & Desertificat, Northwest Inst Ecoenvironm & Resources, Lanzhou, Peoples R China. ; Wang, T (通讯作者),Chinese Acad Sci, Dunhuang Gobi Desert Stn, Northwest Inst Ecoenvironm & Resources, Dunhuang, Peoples R China. |
发表日期 | 2021 |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
卷号 | 48期号:3 |
英文摘要 | Wind-blown sand over Gobi can cause severe sand abrasion. The vertical flux profiles, especially that of the kinetic energy (KE), determine the erosion intensity. However, the vertical distribution of the KE flux of wind-blown sand over Gobi remains poorly understood. Here, we report comprehensive field-based measurements of the vertical flux profiles of wind-blown sand over three typical Gobi surfaces during four transport events. The results show that unlike the exponential decrease in the particle count flux with height, the KE flux profile curve was non-monotonic and could be well fitted by a Pearson VII function. The height where the maximum KE flux density occurred (kink points) ranged from 0.09 to 0.15 m above the ground. In addition, the non-monotonic KE flux profiles primarily emerged during periods of strong transport and were mainly caused by large saltating sand particles due to their high KE as they rebounded from the grain-bed collision. |
英文关键词 | flux profiles; Gobi; kinetic energy; wind‐ blown sand; wind erosion |
语种 | 英语 |
WOS研究方向 | Geology |
WOS类目 | Geosciences, Multidisciplinary |
WOS记录号 | WOS:000620058900010 |
来源期刊 | GEOPHYSICAL RESEARCH LETTERS |
来源机构 | 中国科学院西北生态环境资源研究院 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/253614 |
作者单位 | [Tan, Lihai; Qu, Jianjun; Wang, Tao; Zhang, Kai; An, Zhishan] Chinese Acad Sci, Key Lab Desert & Desertificat, Northwest Inst Ecoenvironm & Resources, Lanzhou, Peoples R China; [Tan, Lihai; Qu, Jianjun; Wang, Tao; An, Zhishan] Chinese Acad Sci, Dunhuang Gobi Desert Stn, Northwest Inst Ecoenvironm & Resources, Dunhuang, Peoples R China; [Qu, Jianjun] Key Lab Earth Surface Proc & Environm Change Trop, Haikou, Hainan, Peoples R China; [Zhang, Kai] Lanzhou Jiaotong Univ, Sch Civil Engn, Lanzhou, Peoples R China |
推荐引用方式 GB/T 7714 | Tan, Lihai,Qu, Jianjun,Wang, Tao,et al. Field Observation Evidence for Kink Points in the Vertical Kinetic Energy Flux Profiles of Wind-Blown Sand Over Gobi and Its Significance[J]. 中国科学院西北生态环境资源研究院,2021,48(3). |
APA | Tan, Lihai,Qu, Jianjun,Wang, Tao,Zhang, Kai,&An, Zhishan.(2021).Field Observation Evidence for Kink Points in the Vertical Kinetic Energy Flux Profiles of Wind-Blown Sand Over Gobi and Its Significance.GEOPHYSICAL RESEARCH LETTERS,48(3). |
MLA | Tan, Lihai,et al."Field Observation Evidence for Kink Points in the Vertical Kinetic Energy Flux Profiles of Wind-Blown Sand Over Gobi and Its Significance".GEOPHYSICAL RESEARCH LETTERS 48.3(2021). |
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