A study on the fragmentation of saltating particles along the fetch distance during wind erosion
PM10 emission largely depends on the characteristics of the saltation process, which involves the movement of aggregate and isolated particles. Studies analyzing the relationship between the fragmentation of saltating aggregates and the dust emission along the fetch distance are very scarce. The obj...
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| Format: | Artículo |
| Language: | Inglés |
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Elsevier
2018
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| Online Access: | http://hdl.handle.net/20.500.12123/3851 https://www.sciencedirect.com/science/article/pii/S1875963718301071?via%3Dihub https://doi.org/10.1016/j.aeolia.2018.10.003 |
| _version_ | 1855483316757594112 |
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| author | Avecilla, Fernando Panebianco, Juan Esteban Buschiazzo, Daniel Eduardo |
| author_browse | Avecilla, Fernando Buschiazzo, Daniel Eduardo Panebianco, Juan Esteban |
| author_facet | Avecilla, Fernando Panebianco, Juan Esteban Buschiazzo, Daniel Eduardo |
| author_sort | Avecilla, Fernando |
| collection | INTA Digital |
| description | PM10 emission largely depends on the characteristics of the saltation process, which involves the movement of aggregate and isolated particles. Studies analyzing the relationship between the fragmentation of saltating aggregates and the dust emission along the fetch distance are very scarce. The objective of the present study was to analyze, on a loamy texture soil, the changes in the size distribution of the eroded sediment along the fetch distance under field conditions. Changes in the particle size distribution of the transported material were measured at four different heights above the soil surface every 25 m on a 200 m plot, during three strong wind erosion events. Statistically significant differences were found both for particle size distribution and aggregation when comparing the eroded sediment at the windward and leeward sides of the experimental plot. A greater proportion of coarser particles was found as the distance traveled by the eroded sediment increased. From the change in average particle size distribution at the beginning and at the end of the 200 m experimental plot, it was estimated that around 12% of the particles smaller than 62.5 μm were lost by vertical transport (dust plume) producing an average concentration of 48 µg m−3 at 2 m height and 200 m fetch. Under the conditions of this experiment, a soil aggregate transported by saltation was fragmented at a rate of 38% every 100 m traveled (R2 = 0.88; p < 0.001). Particle size analysis of the eroded sediment and open-air PM10 concentration measurements indicated that the fragmentation of aggregates during saltation can be considered as the main mechanism of dust emission on this soil. |
| format | Artículo |
| id | INTA3851 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA38512018-11-09T14:43:43Z A study on the fragmentation of saltating particles along the fetch distance during wind erosion Avecilla, Fernando Panebianco, Juan Esteban Buschiazzo, Daniel Eduardo Wind Erosion Dust Agricultural Soils Sediment Erosión Eólica Polvo Suelos Agrícolas Sedimento Dust Emission Saltation Fragmentation Eroded Sediment Particulate Matter PM10 emission largely depends on the characteristics of the saltation process, which involves the movement of aggregate and isolated particles. Studies analyzing the relationship between the fragmentation of saltating aggregates and the dust emission along the fetch distance are very scarce. The objective of the present study was to analyze, on a loamy texture soil, the changes in the size distribution of the eroded sediment along the fetch distance under field conditions. Changes in the particle size distribution of the transported material were measured at four different heights above the soil surface every 25 m on a 200 m plot, during three strong wind erosion events. Statistically significant differences were found both for particle size distribution and aggregation when comparing the eroded sediment at the windward and leeward sides of the experimental plot. A greater proportion of coarser particles was found as the distance traveled by the eroded sediment increased. From the change in average particle size distribution at the beginning and at the end of the 200 m experimental plot, it was estimated that around 12% of the particles smaller than 62.5 μm were lost by vertical transport (dust plume) producing an average concentration of 48 µg m−3 at 2 m height and 200 m fetch. Under the conditions of this experiment, a soil aggregate transported by saltation was fragmented at a rate of 38% every 100 m traveled (R2 = 0.88; p < 0.001). Particle size analysis of the eroded sediment and open-air PM10 concentration measurements indicated that the fragmentation of aggregates during saltation can be considered as the main mechanism of dust emission on this soil. EEA Anguil Fil: Avecilla, Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias de la Tierra y Ambientales de La Pampa. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales. Instituto de Ciencias de la Tierra y Ambientales de La Pampa; Argentina Fil: Panebianco, Juan Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias de la Tierra y Ambientales de La Pampa. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales. Instituto de Ciencias de la Tierra y Ambientales de La Pampa; Argentina Fil: Buschiazzo, Daniel Eduardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Anguil; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias de la Tierra y Ambientales de La Pampa. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales. Instituto de Ciencias de la Tierra y Ambientales de La Pampa; Argentina 2018-11-09T14:40:10Z 2018-11-09T14:40:10Z 2018-12 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/3851 https://www.sciencedirect.com/science/article/pii/S1875963718301071?via%3Dihub 1875-9637 https://doi.org/10.1016/j.aeolia.2018.10.003 eng info:eu-repo/semantics/restrictedAccess application/pdf Elsevier Aeolian research 35 : 85-93. (December 2018) |
| spellingShingle | Wind Erosion Dust Agricultural Soils Sediment Erosión Eólica Polvo Suelos Agrícolas Sedimento Dust Emission Saltation Fragmentation Eroded Sediment Particulate Matter Avecilla, Fernando Panebianco, Juan Esteban Buschiazzo, Daniel Eduardo A study on the fragmentation of saltating particles along the fetch distance during wind erosion |
| title | A study on the fragmentation of saltating particles along the fetch distance during wind erosion |
| title_full | A study on the fragmentation of saltating particles along the fetch distance during wind erosion |
| title_fullStr | A study on the fragmentation of saltating particles along the fetch distance during wind erosion |
| title_full_unstemmed | A study on the fragmentation of saltating particles along the fetch distance during wind erosion |
| title_short | A study on the fragmentation of saltating particles along the fetch distance during wind erosion |
| title_sort | study on the fragmentation of saltating particles along the fetch distance during wind erosion |
| topic | Wind Erosion Dust Agricultural Soils Sediment Erosión Eólica Polvo Suelos Agrícolas Sedimento Dust Emission Saltation Fragmentation Eroded Sediment Particulate Matter |
| url | http://hdl.handle.net/20.500.12123/3851 https://www.sciencedirect.com/science/article/pii/S1875963718301071?via%3Dihub https://doi.org/10.1016/j.aeolia.2018.10.003 |
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