A field experiment on dust emission by wind erosion in the Taklimakan Desert

Yang, Xinghua; He, Qing; Mamtimin, Ali; Huo, Wen; Liu, Xinchun; Strake, Miriam

doi:10.1007/s13351-012-0209-x

Cited by 23 publications

(14 citation statements)

References 19 publications

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“…Saltation plays a key role in aeolian sand transport studies because saltating grains account for about 50-75 % of the total aeolian transport (Bagnold 1941;Chepil 1945). Much research work on saltation has been carried out including field experiments (Bagnold 1941;Chepil 1945;Douglas et al 2011;Gillette and Walker 1977;Stout 2003;Yang et al 2012), wind tunnel experiments Remigius 2003;Van Pelt et al 2006), theoretical analyses (Bauer et al 1998) and numerical simulations (Jasper and Nilton 2009;Shao 2008;Van Boxel et al 1999;Zheng et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Diurnal variations of saltation activity at Tazhong: the hinterland of Taklimakan Desert

Yang

Mamtimin

et al. 2012

Meteorol Atmos Phys

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The Taklimakan Desert of China is a region of frequent sandstorms and, thus, is a major sand and dust source area. Tazhong, a small mining village, is located near the center of the Taklimakan Desert at a distance of 220 km from the desert margins. Near Tazhong, we conducted a 2-year field investigation designed to monitor the diurnal variation of saltation activity using fast-responding piezoelectric saltation sensors (Sensits). Results suggest that saltation activity tends to occur more frequently during daytime in all seasons, relatively high levels of saltation activity are maintained from around 11:30 to around 16:30 local standard time (LST), because of stronger wind speed, higher soil temperature and lower relative humidity. During the spring and summer seasons, the saltation activity can occur at any time of the day, while there are some periods with zero saltation seconds at night and in the early morning during autumn and winter seasons. The results confirm that sandstorms tend to occur more frequently during daylight hours, so it may be helpful to forecast and guard against the occurrence of blowing sand or sandstorms in the Taklimakan Desert.

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Section: Introductionmentioning

confidence: 99%

Diurnal variations of saltation activity at Tazhong: the hinterland of Taklimakan Desert

Yang

Mamtimin

et al. 2012

Meteorol Atmos Phys

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“…Yang studies showed that the number of sands particles impinging sensor ( N ) and the dust horizontal flux ( F ) had the linear relationship, with the correlation equation as follows [34,35]:…”

Section: Methodsmentioning

confidence: 99%

“…Fryrear's BSNE sand sampler had 90% ± 5% collection efficiency for the eolian sands and 40% collection efficiency for sands with the particle size of smaller than 10 μm. Goossens et al Other researchers found that the same sand sampler had higher efficiency for collecting eolian sands than for collecting dust [19,20,34]. The larger the size of the collected particles is, the higher the collection efficiency of the sand sampler is.…”

Section: Sand Collector Tipping-bucket Efficiency Analysismentioning

confidence: 99%

Analysis of Dust Flux and Sand Collection Efficiency of Wind Erosion near Surface Based on Field Observations

Liu¹,

Kang²,

Chen³

et al. 2021

Preprint

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The sand-dust horizontal flux is an important parameter for the study on aeolian sand transport, as well as an important foundation. In this study, a field experiment was developed to measure the data of aeolian transport and microclimate during different dust events with an auto sand sampler, a piezoelectric saltation sensor (H11-Sensit) and a 10 m high meteorological tower in Ta Zhong, the hinterland of the Taklimakan Desert from July to August in 2010. Then, the sampling efficiency of auto sand sampler and horizontal dust flux of near surface were analyzed based on observed data. The results were as follows: sand collector skip turnover increased with the increase of the intensity of dust weather frequency increases, the power function relationship y=2.115 x0.9841, R2 = 0.9206, flip frequency per minute increased from 0.2794 times to 1.3041 times, change is obvious; With the strength of the weather, time to flip the average sediment is shrinking. Sandstorm weather, skip to flip a volume of 3.7160 g, grade I flying sand weather flip a volume of 4.0275 g, the amount of class II flying sand weather turns over a 5. 0035g.The horizontal dust flux of different dust events that calculated with the equation Q=256M; the maximum of one dust event was about 190.335 kg, and the minimum was 1.2 kg. Overall, the sand transportation rate increased with wind speed. However, the changes of sand transportation rate did not quite fit in with wind speed during some dust events, and in this case the corresponding surface temperature was significantly higher. The experimental data obtained can provide theoretical basis for regional sand control and enacting effective engineering measures.

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“…Aeolian sediment transport occurs frequently during high wind events. Yang et al (2012) found that the minimum mean threshold wind velocity of sand movement at a height of 2 m at the southern fringe of the Taklimakan Desert was 4.8 m/s. Therefore, wind-erosion events with mean wind speeds equal to or greater than 4.8 m/s were considered in this research.…”

Section: Field Observationsmentioning

confidence: 97%

Re-evaluating the vertical mass-flux profiles of aeolian sediment at the southern fringe of the Taklimakan Desert, China

Xue

Lei

et al. 2015

J. Arid Land

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Reliable estimation of the mass-flux profiles of aeolian sediment is essential for predicting sediment transport rates accurately and designing measures to cope with wind-erosion. Vertical mass-flux profiles from seventeen wind-erosion events were re-evaluated using five typical models based on observed data obtained from a smooth bare field at the southern fringe of the Taklimakan Desert, China. The results showed that the exponential-function model and the logarithmic-function model exhibited the poorest fit between observed and predicted mass-flux profiles. The power-function model and the modified power-function model improved the fit to field data to an equivalent extent, while the five-parameter combined-function model with a scale constant (σ) of 0.00001 m (different from the σ value proposed by Fryear, which represented the height above which 50% of the total mass flux occurred) was verified as the best for describing the vertical aeolian sediment mass-flux profiles using goodness of fit (R 2 ) and the Akaike Information Criterion (AIC) values to evaluate model performance. According to relationships among model parameters, the modified power model played a prominent explanatory role in describing the vertical profiles of the observed data, whereas the exponential model played a coordinating role. In addition, it was found that the vertical profiles could not be extrapolated using the five selected models or easily estimated using an efficient model without field observations by a near-surface sampler at 0 to 0.05 m. Citation: XUE Jie, LEI Jiaqiang, LI Shengyu, GUI Dongwei, MAO Donglei, ZHOU Jie. 2015. Re-evaluating the vertical mass-flux profiles of aeolian sediment at the southern fringe of the Taklimakan

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A field experiment on dust emission by wind erosion in the Taklimakan Desert

Cited by 23 publications

References 19 publications

Diurnal variations of saltation activity at Tazhong: the hinterland of Taklimakan Desert

Diurnal variations of saltation activity at Tazhong: the hinterland of Taklimakan Desert

Analysis of Dust Flux and Sand Collection Efficiency of Wind Erosion near Surface Based on Field Observations

Re-evaluating the vertical mass-flux profiles of aeolian sediment at the southern fringe of the Taklimakan Desert, China

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