Arid
DOI10.1007/s12517-018-3759-0
Comparison of approaches for calculating the threshold velocity for sand movement based on field experiments in Xinjiang, China
Zhou, Chenglong1,2; He, Qing1,2; Huo, Wen1,2; Yang, Fan1,2; Mamtimin, Ali1,2; Honglin, Pan1,2; Yang, Xinghua1,2
通讯作者Yang, Xinghua
来源期刊ARABIAN JOURNAL OF GEOSCIENCES
ISSN1866-7511
EISSN1866-7538
出版年2018
卷号11期号:15
英文摘要

An accurate threshold velocity ut for sand movement is essential for predicting wind erosion events and calculating the magnitude of horizontal sand flux. We compared various approaches for determining ut using data observed during 4-31 July 2009 in the hinterland of Taklimakan Desert. We used the Gaussian time fraction equivalence method developed by Stout with an interval of 1 day to obtain ut values of 3.03-5.62 m/s (the approach of observations through field experiments). The Kurosak (u(t50%)) method yielded values of 3.71-5.74 m/s (the approach of statistical calculations). The Marticorena and Shao models gave ut values of 4.87-4.90 and 5.82-6.78 m/s, respectively (the approach of model parameterizations). To test the accuracy of these threshold velocities above, we estimated the total horizontal sand flux and the duration of sand saltation. Estimates of the total horizontal sand flux were 1311.9, 1166.4, 1279.9, and 661.6 kg/m for the Stout, Kurosak, Marticorena, and Shao methods, respectively, while the observed value was 732.9 kg/m. The correlation coefficient between observed and estimated values based on the Stout, Kurosak, Marticorena, and Shao methods was 0.75, 0.79, 0.77, and 0.83, respectively. The estimated duration of sand saltation using the ut been as Stout, Kurosak, Marticorena, and Shao was 8211, 6575, 7567, and 3463 min, of which 6208, 5646, 5986, and 3346 min were correct reports, respectively, and the observed value was 7663 min. We discuss the advantages and disadvantages of these methods combining those results above, which can be used to advise researchers to improve the threshold velocity used in future studies.


英文关键词Wind erosion Threshold velocity Horizontal dust flux Taklimakan Desert
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000440222300003
WOS关键词AEOLIAN SEDIMENT TRANSPORT ; DUST EMISSION ; WIND EROSION ; TAKLIMAKAN DESERT ; FRICTION VELOCITY ; AFRICAN DUST ; AIR-QUALITY ; SALTATION ; CLIMATE ; SURFACE
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/207742
作者单位1.China Meteorol Adm, Inst Desert Meteorol, 327 Jianguo Rd, Urumqi 830002, Xinjiang, Peoples R China;
2.CMA, Taklimakan Desert Meteorol Field Expt Stn, Tazhong 841000, Peoples R China
推荐引用方式
GB/T 7714
Zhou, Chenglong,He, Qing,Huo, Wen,et al. Comparison of approaches for calculating the threshold velocity for sand movement based on field experiments in Xinjiang, China[J],2018,11(15).
APA Zhou, Chenglong.,He, Qing.,Huo, Wen.,Yang, Fan.,Mamtimin, Ali.,...&Yang, Xinghua.(2018).Comparison of approaches for calculating the threshold velocity for sand movement based on field experiments in Xinjiang, China.ARABIAN JOURNAL OF GEOSCIENCES,11(15).
MLA Zhou, Chenglong,et al."Comparison of approaches for calculating the threshold velocity for sand movement based on field experiments in Xinjiang, China".ARABIAN JOURNAL OF GEOSCIENCES 11.15(2018).
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