Arid
DOI10.1016/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
ISSN1875-9637
EISSN2212-1684
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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