Wind tunnel and field calibration of six aeolian dust samplers

Goossens, Dirk; Offer, Zvi Yehoshua

doi:10.1016/s1352-2310(99)00376-3

Cited by 158 publications

(105 citation statements)

References 23 publications

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“…Several researchers tested the efficiency of the BSNE samplers. Goossens and Offer (2002) reported an efficiency around 40 per cent for silt soils (95 per cent Table IV. Percentage of the airborne sediment at the sampled sites in suspension and saltation…”

Section: Aeolian Dustmentioning

confidence: 98%

Wind erosion in a marginal Mediterranean dryland area: a case study from the Khanasser Valley, Syria

Masri

Zöbisch

Bruggeman

et al. 2003

Earth Surf Processes Landf

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Evidence of wind erosion is widespread in the drylands of the Mediterranean region. The purpose of this study was to quantify the extent of windblown dust and to assess the factors that affect the susceptibility to wind erosion in areas that are marginal due to their aridity. The study was carried out in Khanasser Valley, a typical degraded, marginal area in northwestern Syria. The average annual rainfall is about 200 mm and falls mainly in the winter months. In the valley floor, cultivation of rainfed barley using conventional tillage has spread over the past decades due to mechanization, reducing the area of natural grazing land. After harvest, the stubble is grazed by sheep leaving the land bare and vulnerable to wind erosion during the following hot and dry summer months. BSNE (Big Spring Number Eight) samplers were installed to sample the horizontal flux of airborne dust during the summer months of 1998-2001 at two land uses in the study area, i.e. on natural grazing land and on harvested and grazed barley fields. Sediment samples were collected at weekly intervals. The average daily mass flux of airborne material for the 5 to 100 cm height was 0·285 g cm −1 width for the cropland, as compared to 0·089 g cm −1 width for the degraded grazing land. During two of the four seasons, more than 45 per cent of the total airborne sediment trapped for the season was captured during a single week, at both landuse locations. The quantity of airborne materials transported by wind was related to the wind factor, soil management and surface conditions. Nutrient and organic matter content of the airborne sediments exceeded the amounts in the parent soils, indicating that wind erosion could contribute to nutrient depletion of the source areas.

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Section: Aeolian Dustmentioning

confidence: 98%

Wind erosion in a marginal Mediterranean dryland area: a case study from the Khanasser Valley, Syria

Masri

Zöbisch

Bruggeman

et al. 2003

Earth Surf Processes Landf

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“…Traps placed at different heights measured the vertical sediment flow (Basarana et al, 2011). Goossens and Offer (2000) suggested that as an obstacle in the flow, a sediment trap always affects the particle flow and trajectory.…”

Section: Discrete Energy Spectrummentioning

confidence: 99%

Sonic anemometry and sediment traps to evaluate the effectiveness of windbreaks in preventing wind erosion

López

Valera

Molina-Aiz

et al. 2017

Sci. agric. (Piracicaba, Braz.)

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The present work analyzes the effectiveness of windbreaks against wind erosion through the study of streamline patterns and turbulent flow by means of sonic anemometry and sediment traps. To this end, windbreaks composed of plastic meshes (7.5 m long and 0.7 m tall) were used. Windbreaks are a good means to reduce wind erosion, as they produce a positive effect on the characteristics of air currents that are related to wind erosion processes. Due to their ease of installation and dismantling, plastic meshes are widely used in areas where they are not required permanently. In our study, the use of a mesh of 13 × 30 threads cm

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“…Furthermore, inside the container there were three rows of glass globe that had been poured with a diameter of 1.6 cm to prevent dust from escaping (15)(16)(17).…”

Section: The Utilized Mdco Samplermentioning

confidence: 99%

“…In the experimental method, dust collectors and samplers are used to collect dust vertically and horizontally (15). In a study by Goossens and Offer in 2000 on horizontal and vertical sampling, results determined that the marble dust collector (MDCO) was the most efficient for collecting dust fall particles (16). MDCO was designed in 1975 and is a common and standard method for collecting dust (15).…”

Section: Introductionmentioning

confidence: 99%

Investigation of chemical characteristics and spatiotemporal quantitative changes of dust fall using GIS and RS technologies; a case study, Yazd city, central plateau of Iran

Azimzadeh

Fallahzadeh

Ghaneian

et al. 2017

Environ Health Eng Manag

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Background: The phenomenon of dust is a serious environmental problem in dry and semi dry regions. It has a destructive effect for the residents of such regions. Over two-thirds of Iran is in areas of dry and semi-dry climate conditions. Methods: In this research, dust fall measurements were taken in 41 stations across Yazd city using a marble dust collector (MDCO) located in different parts of the city. Next, the chemical characteristics of dust were determined using the XRF method. Finally, levels of dust fall across the 4 seasons of the year and status of the constituent elements of dust were determined through ArcGIS software and the Kriging technique. The Raster calculator function was used to make determinations of the effects of dust fall at each of the stations over the course of the year. Remote sensing system, along with maps taken from Landsat and the band combination technique were processed using ENVI software to extract vegetation density and building density maps of the studied region. Results: Results showed that spring had the highest level of dust fall with a value of 200 g/cm 2 . In total, in 109 km 2 of the studied region had average dust fall of 110 g/m 2 that contributed to 12 057 tons of dust over Yazd city in 2015. The constituent elements of the dust fall according to decreasing amounts were as follows: Si>Ca>Al>C>Mg>Fe>K>Na>S>Ti>Cl>P>Mn>Sr>Zn. Conclusion: These results indicate accuracy of the Kriging technique for application in dust zoning. The factors of vegetation and green space were determined as effective on adsorbing dust. Increased building density and height of buildings also contributed to development of dust fall.

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Wind tunnel and field calibration of six aeolian dust samplers

Cited by 158 publications

References 23 publications

Wind erosion in a marginal Mediterranean dryland area: a case study from the Khanasser Valley, Syria

Wind erosion in a marginal Mediterranean dryland area: a case study from the Khanasser Valley, Syria

Sonic anemometry and sediment traps to evaluate the effectiveness of windbreaks in preventing wind erosion

Investigation of chemical characteristics and spatiotemporal quantitative changes of dust fall using GIS and RS technologies; a case study, Yazd city, central plateau of Iran

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