Wind tunnel simulation of wind-sand transport characteristics over frozen dune surfaces
Received date: 2024-10-16
Revised date: 2024-11-25
Online published: 2025-01-13
In winter, the soil beneath the top 10 cm of mobile dune surfaces in the Ulan Buh Desert undergoes freezing. Wind erosion of the dune surface layer exposes sections of the frozen soil. This results in a surface with frozen “bare patches” interspersed among dry sand layers, altering the windblown sand transport process. This study employs wind tunnel simulations to investigate the impact of the frozen layer on windblown sand transport patterns. It examines sand transport characteristics under different wind speeds and moisture gradients in three scenarios: non-frozen, frozen, and dry sand combined with frozen conditions. This study reveals how soil freezing affects sand transport. The results indicate that: (1) The sand transport rate per unit width of the aeolian sand source and the dry sand combined with frozen source increases exponentially with wind speed and decreases exponentially with water content. Sand transport rate is strongly correlated with both wind speed and water content, following an exponential relationship with both factors. (2) Freezing reduces sand transport rate by 3% to 91%.When “bare patches” appear in the field, the sand transport rate decreases by 49% to 97%. Generally, the sand transport rate of dry sand combined with frozen is greater than that of aeolian sand before freezing, which is greater than that of frozen aeolian sand. (3) Before freezing, the sand transport rate of aeolian sandy soil decreased with height, but after freezing, it first increased and then decreased with height.The relationship followed an exponential function. (4)During wind erosion, when the dry sand layer and frozen soil layer are interspersed, sand particles move from the dry sand bed to the frozen soil interface, causing changes in the sand bed surface. Saltation transport increases by approximately 18%, and the vertical distribution of sediment transport first increases and then decreases, conforming to a power function. The “trumpet effect” is observed at a height of 2 to 6 cm. When frozen “bare patches” appear on dunes in winter, windblown sand transport is inhibited, while the proportion of saltation in the wind-sand flow increases.
Jinrong Li , Zhaoen Han , Wei Cui , Xiaolin Jin , Chunhua Dou . Wind tunnel simulation of wind-sand transport characteristics over frozen dune surfaces[J]. Journal of Desert Research, 2025 , 45(1) : 229 -241 . DOI: 10.7522/j.issn.1000-694X.2024.00164
| 1 | 吴正.风沙地貌与治沙工程学[M].北京:科学出版社,2003. |
| 2 | Ravi S, Zobeck T M, Over T M,et al.On the effect of moisture bonding forces in air-dry soils on threshold friction velocity of wind erosion[J].Sedimentology:Journal of the International Association of Sedimentologists,2006,53(3):597-609. |
| 3 | Chepil W S.Seasonal fluctuations in soil structure and erodibility of soil by wind[J].Soil Science Society of America Journal,1954,18(1):13-16. |
| 4 | Bajracharya R M, Lal R, Hall G F.Temporal variation in properties of an uncropped,ploughed Miamian soil in relation to seasonal erodibility[J].Hydrological Processes,1998,12(7):1021-1030. |
| 5 | Wang L, Shi Z H, Wu G L,et al.Freeze/thaw and soil moisture effects on wind erosion[J].Geomorphology,2014,207:141-148. |
| 6 | Barchyn T E, Hugenholtz C H.Winter variability of aeolian sediment transport threshold on a cold-climate dune[J].Geomorphology,2012,177/178:38-50. |
| 7 | Arnalds O, Gisladottir F O, Sigurjónsson H.Sandy deserts of Iceland:an overview[J].Journal of Arid Environments,2001,47(3):359-371. |
| 8 | Abulaiti A, Kimura R, Shinoda M,et al.An observational study of saltation and dust emission in a hotspot of Mongolia[J].Aeolian Research,2014,15:169-176. |
| 9 | Han L, Tsunekawa A, Tsubo M.Effect of frozen ground on dust outbreaks in spring on the eastern Mongolian Plateau[J].Geomorphology,2011,129(3/4):412-416. |
| 10 | Xie S, Qu J, Mu Y,et al.Variation and significance of surface heat after the mechanical sand control of Qinghai-Tibet Railway was covered with sandy sediments[J].Results in Physics,2017,7:1712-1721. |
| 11 | Zhang K, Qu J, Liao K,et al.Damage by wind-blown sand and its control along Qinghai-Tibet Railway in China[J].Aeolian Research,2010,1(3/4):143-146. |
| 12 | 王一菲,郑粉莉,张加琼,等.冻融作用对典型黑土土壤风蚀的影响[J].水土保持学报,2020,34(5):34-41. |
| 13 | 赵显波,刘铁军,许士国,等.季节冻土区黑土耕层土壤冻融过程及水分变化[J].冰川冻土,2015,37(1):233-240. |
| 14 | 王恩姮,赵雨森,陈祥伟.季节性冻融对典型黑土区土壤团聚体特征的影响[J].应用生态学报,2010,21(4):889-894. |
| 15 | Liu T, Xu X, Yang J.Experimental study on the effect of freezing-thawing cycles on wind erosion of black soil in Northeast China[J].Cold Regions Science and Technology,2017,136:1-8. |
| 16 | 赵纳祺.乌兰布和沙漠沿黄段冻结对沙丘坡面风积沙运移特征影响[D].呼和浩特:内蒙古农业大学,2018. |
| 17 | 秦海琴,张萍,展秀丽,等.宁夏河东沙地沙丘冻融过程的时空差异[J].冰川冻土,2020,42(3):909-918. |
| 18 | 秦海琴.流动沙丘在季节性冻结期的形态演变过程及其动力学解释[D].银川:宁夏大学,2020. |
| 19 | 李锦荣,郭建英,赵纳祺,等.乌兰布和沙漠流动沙丘风蚀空间分布规律及其影响因素[J].中国沙漠,2018,38(5):928-935. |
| 20 | 李锦荣,韩兆恩,唐国栋,等.冻结对沙丘土壤抗风蚀能力的影响[J].水土保持学报,2025,39(1):1-8. |
| 21 | 韩兆恩,崔崴,李锦荣,等.土壤含水率对冻结风沙土风蚀速率的影响[J].中国沙漠,2024,44(1):228-234. |
| 22 | 杨根生.黄河沿岸风成沙入黄沙量估算[J].科学通报,1988,33(13):1017. |
| 23 | 李振全.黄河石嘴山至巴彦高勒段风沙入黄量研究[D].西安:西安理工大学,2019. |
| 24 | 杜鹤强,薛娴,王涛,等.1986-2013年黄河宁蒙河段风蚀模数与风沙入河量估算[J].农业工程学报,2015,31(10):142-151. |
| 25 | 田世民,郭建英,尚红霞,等.乌兰布和沙漠风沙入黄量研究[J].人民黄河,2017,39(7):65-70. |
| 26 | 李锦荣,王健,王茹,等.基于无人机技术黄河沿岸沙丘移动速度监测及影响因素分析[J].农业工程学报,2021,37(19):57-64. |
| 27 | 李锦荣,郭建英,董智,等.乌兰布和沙漠沿黄段不同治理措施的风沙运移特征及其防护效果[J].干旱区资源与环境,2016,30(8):113-119. |
| 28 | 白子怡,董治宝,南维鸽,等.植被盖度对风沙流结构及输沙率的影响[J].中国沙漠,2024,44(2):25-34. |
| 29 | 杨欢,李玉强,王旭洋,等.半干旱区不同类型沙丘风沙流结构特征[J].中国沙漠,2018,38(6):1144-1152. |
| 30 | 徐军,郝玉光,刘芳,等.乌兰布和沙漠不同下垫面风沙流结构与变异特征[J].水土保持研究,2013,20(4):95-98. |
| 31 | 胡平,杨建英,张艳,等.乌海市沿黄河两岸沙丘风沙流结构差异与冰面风沙特征[J].干旱区研究,2020,37(3):765-773. |
| 32 | 康永德,杨兴华,何清,等.塔中地区近地层风沙流的结构特征[J].水土保持通报,2017,37(3):195-199. |
| 33 | 屈建军,张克存,张伟民,等.几种典型戈壁床面风沙流特性比较[J].中国沙漠,2012,32(2):285-290. |
| 34 | 黄雨晖,韩小元,赵健,等.新疆戈壁地区风沙流结构及其粒径特征研究[J].气象与减灾研究,2019,42(3):199-205. |
| 35 | 肖朋.砾石覆盖情形下输沙率变化研究[D].石家庄:河北师范大学,2023. |
| 36 | 陈银萍,曹雯婕,余沛东,等.土壤含水率对风沙流结构及风蚀量的影响[J].中国沙漠,2021,41(2):173-180. |
| 37 | 何京丽,郭建英,邢恩德,等.黄河乌兰布和沙漠段沿岸风沙流结构与沙丘移动规律[J].农业工程学报,2012,28(17):71-77. |
| 38 | 李钢铁,贾玉奎,王永生.乌兰布和沙漠风沙流结构的研究[J].干旱区资源与环境,2004():276-278. |
| 39 | 尹瑞平,郭建英,董智,等.黄河乌兰布和沙漠段沿岸不同高度典型沙丘风沙特征[J].水土保持研究,2017,24(5):157-161. |
| 40 | 刘芳,郝玉光,辛智鸣,等.乌兰布和沙区不同下垫面的土壤风蚀特征[J].林业科学,2017,53(3):128-137. |
| 41 | 张正偲,董治宝.腾格里沙漠东南部野外风沙流观测[J].中国沙漠,2013,33(4):973-980. |
| 42 | 石涛.光伏电站芦苇沙障防风固沙效益研究[D].呼和浩特:内蒙古农业大学,2020. |
| 43 | Dong Z, Lu J, Man D,et al.Equations for the near-surface mass flux density profile of wind-blown sediments[J].Earth Surface Processes and Landforms,2011,36(10):1292-1299. |
| 44 | 陶彬彬,刘丹,管超,等.库布齐沙漠南缘抛物线形沙丘表面风沙流结构变异[J].地理科学进展,2016,35(1):98-107. |
| 45 | 董玉祥,马骏.风速对海岸沙丘表面风沙流结构影响的实证研究[J].干旱区资源与环境,2009,23(9):179-183. |
| 46 | 周颖,曹月娥,杨建军,等.古尔班通古特沙漠东缘风沙流结构特征[J].水土保持学报,2016,30(3):78-83. |
| 47 | 邳华伟,冯广龙.塔里木盆地西北部3种典型下垫面风沙活动特征[J].干旱区研究,2016,33(2):441-448. |
| 48 | Rotnicka J.Aeolian vertical mass flux profiles above dry and moist sandy beach surfaces[J].Geomorphology,2013,187:27-37. |
| 49 | 韩庆杰,屈建军,廖空太,等.海岸湿沙表面风沙传输特征的风洞实验研究[J].中国沙漠,2012,32(6):1512-1521. |
| 50 | 李悦,王海兵,廖承贤,等.戈壁风沙运动及其对下垫面砾石盖度影响的风洞模拟[J].中国沙漠,2024,44(3):194-201. |
| 51 | 刘旭阳,宁文晓,王振亭.两种戈壁地表风沙流特征的野外观测[J].干旱区研究,2020,37(4):1087-1094. |
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