Characteristics of wind velocity fluctuation over Gobi underlying surface

doi:10.3969/j.issn.1000-2006.2017.01.019

SHANG Heying, YIN Zhongdong, ZHANG Peng, LAN Ruijun

Journal of Nanjing Forestry University (Natural Sciences Edition） ›› 2017, Vol. 41 ›› Issue (01) : 123-128.

PDF(1759 KB)

Journal of Nanjing Forestry University (Natural Sciences Edition） ›› 2017, Vol. 41 ›› Issue (01) : 123-128. DOI: 10.3969/j.issn.1000-2006.2017.01.019

Characteristics of wind velocity fluctuation over Gobi underlying surface

SHANG Heying, YIN Zhongdong^*, ZHANG Peng, LAN Ruijun

Author information +

History +

Abstract

【Objective】This study is to investigate the characteristics of wind velocity fluctuation in the wild area for the theoretical foundation of the research of wind erosion in turbulent flow.【Method】Most previous studies of wind-blown sand were conducted for the wind tunnel, and limited actual wind field data were available because it is difficult to be determined due to poor natural conditions in Gobi area. Therefore, in this study, the instantaneous wind velocities of different height were measured in Gobi surface of Carabeli project area, Xinjiang Uygur Autonomous Region in 2015. Depending on the data, we mainly analyzed the characteristics of wind velocity fluctuation of different heights(0-2 m)from several aspects, that were the wind velocity fluctuation, turbulence intensity, wind velocity fluctuation intensity, and the relationship between them and wind velocity using statistical methods. In addition, the optimal fitting equation was selected by the method of curve estimation in regression analysis.【Result】The variation of instantaneous wind velocity and wind velocity fluctuation of different heights is complex, and their change trends with time are almost similar. In the period of 0-50 min, the instantaneous wind velocity fiercely jumps at the altitude of 40 cm and it tends to be smaller. The amplitude of wind velocity fluctuation is very large, and its maximum value is close to 6 m/s. However, 90% of it is concentrated in the range of∣0-3∣m/s. The probability distribution of wind velocity fluctuation is Gauss distribution. There is a unitary linear relationship between fluctuation intensity and wind velocity. The stronger the wind velocity, the stronger the fluctuation intensity is obtained. The maximum value of wind velocity fluctuation intensity is 2.41 m/s. The turbulence intensity varies between 0.14 and 0.21, and its mean value is about 0.17. It belongs to the high turbulence intensity. No obvious relationship between the height and average wind velocity below 2 m is observed.【Conclusion】The wind velocity fluctuation is non-stationary. As the wind velocity and height increase, the wind velocity fluctuation tends to be stronger in Gobi. The wind velocity fluctuation cannot be ignored when the wind erosion is studied, especially in the windy weather.

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

SHANG Heying, YIN Zhongdong, ZHANG Peng, LAN Ruijun. Characteristics of wind velocity fluctuation over Gobi underlying surface[J]. Journal of Nanjing Forestry University (Natural Sciences Edition）. 2017, 41(01): 123-128 https://doi.org/10.3969/j.issn.1000-2006.2017.01.019

References

[1] 崔军强, 武生智. 风速脉动对跃移运动的影响[J]. 兰州大学学报(自然科学版), 2013, 49(5): 611-615. DOI:10.3969/j.issn.0455-2059.2013.05.004. CUI J Q, WU S Z. Effect of wind velocity fluctuation on sand transport[J]. Journal of Lanzhou University(Natural Sciences), 2013, 49(5): 611-615.
[2] 杨林, 韩广, 杨济, 等. 大风天气老哈河下游迎风侧谷坡的风速脉动特征[J]. 中国沙漠, 2014, 34(6): 1469-1474. DOI:10.7522/j.issn.1000-694X.2014.00008. YANG L, HAN G, YANG J, et al. Characteristics of wind velocity fluctuation on the intensive windy days at windward slope of the downstream of the Laoha River, China[J]. Journal of Desert Research, 2014, 34(6): 1469-1474.
[3] BAAS A C W, SHERMAN D J. The formation and behavior of Aeolian streamers [J]. Journal of Geophysical Research Earth Surface, 2005, 110(F3):195-221.DOI:10.1029/2004JF000270
[4] 王萍, 郑晓静. 野外近地表风沙流脉动特征分析[J]. 中国沙漠, 2013, 33(6): 1622-1628. DOI:10.7522/j.issn.1000-694X.2013.00241. WANG P, ZHENG X J. Fluctuating of wind-blown sand flux in field wind condition[J]. Journal of Desert Research, 2013, 33(6): 1622-1628.
[5] BISAL F, NIELSEN K F. Movement of soil particles in saltation[J]. Canadian Journal of Soil Science, 1962, 42(1):81-86. DOI:10.4141/cjss62-012.
[6] SHAO Y. A similarity theory for saltation and application to aeolian mass flux[J]. Boundary-Layer Meteorology, 2005, 115(2): 319-338. DOI:10.1007/s10546-004-4632-0.
[7] 张克存, 屈建军, 俎瑞平, 等. 典型下垫面风沙流中风速脉动特征研究[J]. 中国科学:D辑, 2006, 36(12):1163-1169. DOI:10.3321/j.issn:1006-9267.2006.12.011.
[8] 胡海波, 王汉杰, 鲁小珍, 等. 中国干旱半干旱地区防护林气候效应的分析[J]. 南京林业大学学报(自然科学版), 2001, 25(3): 77-82. DOI:10.3969/j.issn.1000-2006.2001.03.019. HU H B, WANG H J, LU X Z, et al. A study on effects of protective forest on climate in arid and semi-arid areas of China[J]. Journal of Nanjing Forestry University(Natural Sciences Edition), 2001, 25(3): 77-82.
[9] 李志忠, 武胜利, 王晓峰, 等. 新疆和田河流域柽柳沙堆的生物地貌发育过程[J]. 地理学报, 2007, 62(5): 462-470. DOI:10.3321/j.issn:0375-5444.2007.05.002. LI Z Z, WU S L, WANG X F, et al. Bio-geomorphologic growth process of Tamarix nabkha in the Hotan River Basin of Xinjiang[J]. Acta Geographica Sinica, 2007, 62(5): 462-470.
[10] 张静红. 近地表的流场结构及其对沙尘输运的影响[D]. 兰州:兰州大学, 2013.
[11] 缪启龙, 温雅婷, 何清, 等. 沙漠腹地春夏季近地层大气湍流特征观测分析[J]. 中国沙漠, 2010, 30(1):167-174. MIAO Q L, WEN Y T, HE Q, et al. Turbulence characteristics of surface layer over hinterland of taklimakan desert in spring and summer[J]. Journal of Desert Research, 2010, 30(1): 167-174.
[12] 李振山, 倪晋仁. 风沙流中风速脉动的实验测量[J]. 应用基础与工程科学学报, 2003, 11(4): 352-360. DOI:10.3969/j.issn.1005-0930.2003.04.003. LI Z S, NI J R. Experimental measurement of air flow velocity fluctuation of wind-sand flux[J]. Journal of Basic Science and Engineering, 2003, 11(4): 352-360.
[13] 张春来, 邹学勇, 程宏, 等. 包兰铁路沙坡头段防护体系近地面流场特征[J]. 应用基础与工程科学学报, 2006, 14(3): 353-360. DOI:10.3969/j.issn.1005-0930.2006.03.006. ZHANG C L, ZOU X Y, CHENG H, et al. Near surface air flow field across the shelterbelt of shapotou section, Baotou-Lanzhou line[J]. Journal of Basic Science and Engineering, 2006, 14(3): 353-360.
[14] 包慧娟, 李振山. 风沙流中风速纵向脉动的实验研究[J]. 中国沙漠, 2004, 24(2): 244-247. DOI:10.3321/j.issn:1000-694X.2004.02.025. BAO H J, LI Z S. Longitudinal intensity of airflow turbulence with sand grain saltation in a wind tunnel[J].Journal of Desert Research, 2004, 24(2): 244-247.
[15] 丁士晟. 温度层结与风速对贴地层风速廓线的影响[J]. 北京大学学报(自然科学), 1958(3): 305-313. DING S S.The influence of the thermal stratification and wind velocity on the wind profile in the earth’s surface layer. [J].Acta Scientiarum Naturalium Universitatis Pekinensis, 1958(3):305-313.
[16] 王雪芹, 杨东亮, 马洋, 等. 沙漠-绿洲过渡带典型下垫面风速脉动特征——以塔克拉玛干沙漠南缘策勒绿洲为例[J]. 中国沙漠, 2015, 35(3): 542-548. DOI:10.7522/j.issn.1000-694X.2014.00054. WANG X Q, YANG D L, MA Y, et al. Wind fluctuation over three typical ground surfaces in desert-oasis ecotone: a case at the southern rim of the Taklimakan desert[J]. Journal of Desert Research, 2015, 35(3): 542-548.
[17] 杨东亮, 王雪芹, 胡永锋, 等. 绿洲-沙漠过渡带风况资料统计中的若干问题研究——以策勒绿洲为例[J].干旱区地理, 2015, 38(3): 549-555.DOI:10.13826/j.cnki.cn65-1103/x.2015.03.016 YANG D L, WANG X Q, HU Y F, et al. Some problems in wind data analyzing in oasis-desert ecotone: a case of qira oasis[J]. Arid Land Geography, 2015, 38(3): 549-555.
[18] 杨林, 韩广, 胡孟春, 等. 老哈河下游背风侧谷坡的风速脉动特征[J]. 干旱区研究, 2015, 32(3): 579-584. DOI:10.13866/j.azr.2015.03.23. YANG L, HAN G, HU M C, et al. Wind velocity fluctuation characteristics at valley slope of the lee side in the downstream of the Laoha River, China[J]. Arid Zone Research, 2015, 32(3): 579-584.

PDF(1759 KB)

Accesses

Citation

Detail

Sections

Recommended

The full text is translated into English by AI, aiming to facilitate reading and comprehension. The core content is subject to the explanation in Chinese.

www.nldxb.njfu.edu.cn

Edited ＆ Published by Editorial Department of Nanjing Forestry University(Natural Sciences Edition)
Address： No.159 Longpan Road,Nanjing 210037 Jiangsu,P.R.China
E-mail ：xuebao@njfu.edu.cn , xuebao@njfu.com.cn
Telephone +86-25-85428247,85427076
Distributed by China International Book Trading Corporation P.O. Box 399, Beijing ,P.R. China

〈

〉

Please choose a citation manager

Content to export