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.
Highlights
Wind is an important erosion force that shapes the surfaces of Earth, Venus, Mars, and Titan [1,2]
It was found that the variation trend was consistent between sand–dust storms and. Yang and He showed that the number of sands particles impinging the sensor (N) and sand-blown weather, especially on 19 July 2015 (8:35–21:35), 4 August 2015 (11:35–21:15), the dust horizontal flux (F) have a linear relationship: 5 August 2015 (10:20–20:25), and 7 August 2015 (9:30–21:55) (Figure 4)
The cumulative collected sand mass and number of sand particles impacting the sensor of the designed sand sampler were highly consistent in the complex field test environment, which had a linear relationship with an R2 value of 0.6053, reflecting good performance in sand collection
Summary
Wind is an important erosion force that shapes the surfaces of Earth, Venus, Mars, and Titan [1,2]. Semi-arid, high latitude, and high-altitude regions on Earth, wind erosion is usually considered to be the main driving force for soil loss and dust release [3,4,5,6]. Quantitative studies of wind-induced sand migration have played an important role in revealing the geomorphological processes, and soil losses and wind erosion dust have been accurately simulated [7,8,9]. Many studies have been carried out on horizontal sand dust fluxes, such as in Europe, China, Canada, Australia, and the United States, especially in arid and semi-arid regions. The mean particle velocity at different heights depends on momentum exchange and particle concentration
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