Application of a High-Precision Aeolian Sand Collector in Field Wind and Sand Surveys

Abstract

Sand collectors are important for quantitatively monitoring aeolian sand activities. In this paper, an automatic high-precision sand collector was designed. Based on the measured data of aeolian transport performed with a piezoelectric saltation sensor (H11-Sensit) and a 10 m high meteorological tower, the sampling efficiency of the automatic sand sampler and the horizontal dust flux of the near surface were analyzed based on observed data. The results were as follows: the best-fitting function between the number of impacting sand particles and the amount of collected sand was a linear relationship. The average value of R2 was 0.7702, and the average sand collection efficiency of the sand collector at a height of 5 cm was 94.3%, indicating good sand collection performance. From all field tests conducted so far, it appeared that a high-precision sand sampler was a useful device for making field measurements of horizontal dust fluxes and ascertaining the relationship between transition particles and wind speed. In the future, the equipment costs and wind drive will continue to be optimized.

Wind Dynamic Characteristics and Wind Tunnel Simulation of Subgrade Sand Hazard in the Shannan Wide Valley of the Sichuan–Tibet Railway

“…Wind is not only an important factor affecting the geomorphological evolution in sandy areas [ 35 , 36 , 37 ] but also the source power causing sand damage [ 38 , 39 , 40 ]. According to the classification standard of wind energy (Fryberger and Dean, 1979), the sand DP of the Shannan wide valley of the Sichuan–Tibet Railway indicates a low-wind-energy environment (≤200 VU), and the RDP/DP belongs to an intermediate ratio (0.3–0.8) and a closed to low ratio (≤0.3).…”

“…From a time point view, the critical period for the prevention and control of wind-blown sand hazards in the railway is the spring. Wind is not only an important factor affecting the geomorphological evolution in sandy areas [35][36][37] but also the source power causing sand damage [38][39][40]. According to the classification standard of wind energy (Fryberger and Dean, 1979), the sand DP o the Shannan wide valley of the Sichuan-Tibet Railway indicates a low-wind-energy Wind is not only an important factor affecting the geomorphological evolution in sandy areas [35][36][37] but also the source power causing sand damage [38][39][40].…”

“…Wind is not only an important factor affecting the geomorphological evolution in sandy areas [35][36][37] but also the source power causing sand damage [38][39][40]. According to the classification standard of wind energy (Fryberger and Dean, 1979), the sand DP o the Shannan wide valley of the Sichuan-Tibet Railway indicates a low-wind-energy Wind is not only an important factor affecting the geomorphological evolution in sandy areas [35][36][37] but also the source power causing sand damage [38][39][40]. According to the classification standard of wind energy (Fryberger and Dean, 1979), the sand DP of the Shannan wide valley of the Sichuan-Tibet Railway indicates a low-wind-energy environment (≤200 VU), and the RDP/DP belongs to an intermediate ratio (0.3-0.8) and a closed to low ratio (≤0.3).…”

The Design and Experimental Study of a Double-Column Scrambler Wind–Sand Separator for Sustainable Soil Wind Erosion Monitoring

“…In recent years, researchers have made significant strides in this field. Liu Xinchun et al [11] designed a high-precision automated sand sampler that combined dynamic sand collection with static weighing, enabling the real-time dynamic monitoring of wind erosion. Additionally, Song Tao et al [12] devised a combined sand sampler, employing diversion and counterflow mechanisms, which not only provided real-time continuous weighing capabilities, but also facilitated wireless data transmission and automatic data acquisition.…”

Investigating the Soil Wind Erosion in the Black Soil Region of Northeast China Based on ¹³⁷Cs Tracer Method

“…The erosion pin method [18,19], wind erosion disk method [20,21], sand collector method [22,23], wind tunnel simulation [24,25], and indirect analysis methods [26] are presently prevalent in the observation and research of wind erosion processes. Due to the intricate and challenging nature of capturing the wind erosion process, previous studies have relied on sand collector or erosion pin methods, which characterize wind erosion conditions using sand transportation rates, but do not provide a direct quantification of the wind erosion rate on a specific plot [27,28]. Although the wind erosion circle method and the wind erosion disk method provide information on the wind erosion in a given area, it is necessary to conduct further research.…”