Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.aeolia.2014.02.004 |
Aeolian sediment and dust fluxes during predominant "background" wind conditions for unburned and burned semiarid grassland: Interplay between particle size and temporal scale | |
Merino-Martin, Luis1,2; Field, Jason P.3; Villegas, Juan Camilo4; Whicker, Jeffrey J.5; Breshears, David D.3,6; Law, Darin J.3; Urgeghe, Anna M.7 | |
通讯作者 | Merino-Martin, Luis |
来源期刊 | AEOLIAN RESEARCH
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ISSN | 1875-9637 |
EISSN | 2212-1684 |
出版年 | 2014 |
卷号 | 14页码:97-103 |
英文摘要 | Monitoring of aeolian transport is needed for assessment and management of human health risks as well as for soil resources. Human health risks are assessed based on duration of exposure as well as concentration. Many aeolian studies focus on periods of high wind speed when concentrations are greatest but few studies focus on "background" conditions when concentrations are likely lower but which represent the most prevalent conditions. Such "background" conditions might be especially important at sites with recent disturbance such as fire. Exposure assessments also require improved understanding relating longer-term (days to weeks) measurements of saltation of larger particles to shorter-term (minutes to hours) measurements of smaller inhalable dust particles. To address these issues, we employed three commonly used instruments for measuring dust emissions for unburned and recently-burned sites: Big Springs Number Eight (BSNE) samplers for larger saltating soil particles (>50 mu m) with weekly to monthly sampling resolution, DustTraks for suspended particles (diameters <10 mu m) with 1-s sampling resolution, and Total Suspended Particulate (TSP) filter samplers for measuring with hourly to daily sampling resolution. Significant differences in concentrations between burned and unburned sites were detectable in either short (1-s maximum) interval DustTrak PM10 measurements, or in longer term (weekly) BSNE horizontal sediment flux measurements, but not in intermediate-term (daily 5-h means) for either DustTrak PM10 or TSP measurements. The results highlight ongoing dust emissions during less windy periods and provide insight into the complex interplay among particle-size dependent measures and typical time scales measured. (C) 2014 Elsevier B.V. All rights reserved. |
英文关键词 | Wind erosion Dust measurement Particle size Aerosol Soil |
类型 | Article |
语种 | 英语 |
国家 | Australia ; USA ; Colombia ; Spain |
收录类别 | SCI-E |
WOS记录号 | WOS:000342260100009 |
WOS关键词 | WATER EROSION ; TRANSPORT ; ECOSYSTEMS ; EMISSIONS ; SURFACES ; DESERT |
WOS类目 | Geography, Physical |
WOS研究方向 | Physical Geography |
来源机构 | University of Arizona ; University of Western Australia |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/180431 |
作者单位 | 1.Kings Pk & Bot Gardens, Bot Gardens & Pk Author, Perth, WA 6005, Australia; 2.Univ Western Australia, Sch Plant Biol, Nedlands, WA 6009, Australia; 3.Univ Arizona, Sch Nat Resources & Environm, Tucson, AZ USA; 4.Univ Antioquia, Fac Ingn, Escuela Ambiental, Medellin, Colombia; 5.Los Alamos Natl Lab, Environm Stewardship Grp, Los Alamos, NM USA; 6.Univ Arizona, Dept Ecol & Evolutionary Biol, Tucson, AZ USA; 7.Univ Alicante, Dept Ecol, E-03080 Alicante, Spain |
推荐引用方式 GB/T 7714 | Merino-Martin, Luis,Field, Jason P.,Villegas, Juan Camilo,et al. Aeolian sediment and dust fluxes during predominant "background" wind conditions for unburned and burned semiarid grassland: Interplay between particle size and temporal scale[J]. University of Arizona, University of Western Australia,2014,14:97-103. |
APA | Merino-Martin, Luis.,Field, Jason P..,Villegas, Juan Camilo.,Whicker, Jeffrey J..,Breshears, David D..,...&Urgeghe, Anna M..(2014).Aeolian sediment and dust fluxes during predominant "background" wind conditions for unburned and burned semiarid grassland: Interplay between particle size and temporal scale.AEOLIAN RESEARCH,14,97-103. |
MLA | Merino-Martin, Luis,et al."Aeolian sediment and dust fluxes during predominant "background" wind conditions for unburned and burned semiarid grassland: Interplay between particle size and temporal scale".AEOLIAN RESEARCH 14(2014):97-103. |
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