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Statements

Subject Item
n2:RIV%2F61989592%3A15310%2F13%3A33144960%21RIV14-GA0-15310___
rdf:type
skos:Concept n13:Vysledek
dcterms:description
Vehicle traffic is at present one of the major sources of environmental pollution in urban areas. Magnetic parameters are successfully applied in environmental studies to obtain detailed information about concentrations and quality of iron-bearing minerals. A general aim of this research was to investigate the magnetic, microstructural and mineralogical properties of dust extracted from the roadside snowpack accumulated on the side of an urban highway, northern Helsinki. Vertical snow profiles were taken at different distances (5, 10 and 15 m) from the road edge, during winter season 2010-2011. The temporal distribution of mass magnetic susceptibility (chi) of the road dust shows that the concentration of magnetic particles increases in the snowpack during winter. Roadside snowpack preserves a large fraction of the magnetic particulate until the late stages of melting and this could be considered as one of the main factors responsible for the resuspension phenomenon observed in Nordic countries. The vertical distribution of chi and SIRM (saturation isothermal remanent magnetization)/chi ratio may indicate the migration of magnetic particles down in the snowpack during melting conditions. Ultrafine to coarse-grained (superparamagnetic to multidomain) magnetite was identified as the primary magnetic mineral in all the studied road dust samples. The examined road dust contains significant amount of dia/paramagnetic minerals (e.g. quartz, albite, biotite) and the content of magnetite is relatively low (below 1 weight percent, wt%). The roadside snowpack is enriched in anthropogenic particles such as angular and spherical iron-oxides, tungsten-rich particles and sodium chloride. This study demonstrates the suitability of snow as an efficient collecting medium of magnetic particulates generated by anthropogenic activities. Vehicle traffic is at present one of the major sources of environmental pollution in urban areas. Magnetic parameters are successfully applied in environmental studies to obtain detailed information about concentrations and quality of iron-bearing minerals. A general aim of this research was to investigate the magnetic, microstructural and mineralogical properties of dust extracted from the roadside snowpack accumulated on the side of an urban highway, northern Helsinki. Vertical snow profiles were taken at different distances (5, 10 and 15 m) from the road edge, during winter season 2010-2011. The temporal distribution of mass magnetic susceptibility (chi) of the road dust shows that the concentration of magnetic particles increases in the snowpack during winter. Roadside snowpack preserves a large fraction of the magnetic particulate until the late stages of melting and this could be considered as one of the main factors responsible for the resuspension phenomenon observed in Nordic countries. The vertical distribution of chi and SIRM (saturation isothermal remanent magnetization)/chi ratio may indicate the migration of magnetic particles down in the snowpack during melting conditions. Ultrafine to coarse-grained (superparamagnetic to multidomain) magnetite was identified as the primary magnetic mineral in all the studied road dust samples. The examined road dust contains significant amount of dia/paramagnetic minerals (e.g. quartz, albite, biotite) and the content of magnetite is relatively low (below 1 weight percent, wt%). The roadside snowpack is enriched in anthropogenic particles such as angular and spherical iron-oxides, tungsten-rich particles and sodium chloride. This study demonstrates the suitability of snow as an efficient collecting medium of magnetic particulates generated by anthropogenic activities.
dcterms:title
Distribution of magnetic particulates in a roadside snowpack based on magnetic, microstructural and mineralogical analyses Distribution of magnetic particulates in a roadside snowpack based on magnetic, microstructural and mineralogical analyses
skos:prefLabel
Distribution of magnetic particulates in a roadside snowpack based on magnetic, microstructural and mineralogical analyses Distribution of magnetic particulates in a roadside snowpack based on magnetic, microstructural and mineralogical analyses
skos:notation
RIV/61989592:15310/13:33144960!RIV14-GA0-15310___
n13:predkladatel
n14:orjk%3A15310
n3:aktivita
n7:S n7:P
n3:aktivity
P(ED2.1.00/03.0058), P(EE2.3.20.0017), P(GAP108/11/1350), S
n3:cisloPeriodika
195
n3:dodaniDat
n6:2014
n3:domaciTvurceVysledku
n9:5207193 n9:9251189 n9:2176645
n3:druhVysledku
n19:J
n3:duvernostUdaju
n11:S
n3:entitaPredkladatele
n16:predkladatel
n3:idSjednocenehoVysledku
69997
n3:idVysledku
RIV/61989592:15310/13:33144960
n3:jazykVysledku
n20:eng
n3:klicovaSlova
Rock and mineral magnetism; Magnetic mineralogy and petrology; Environmental magnetism
n3:klicoveSlovo
n8:Rock%20and%20mineral%20magnetism n8:Environmental%20magnetism n8:Magnetic%20mineralogy%20and%20petrology
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[3575B8439377]
n3:nazevZdroje
Geophysical Journal International
n3:obor
n18:DD
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
10
n3:projekt
n4:EE2.3.20.0017 n4:GAP108%2F11%2F1350 n4:ED2.1.00%2F03.0058
n3:rokUplatneniVysledku
n6:2013
n3:svazekPeriodika
1
n3:tvurceVysledku
Johanson, Bo Bucko, Michal S Filip, Jan Čuda, Jan Ziolkowski, Grzegorz Mattila, Olli-Pekka Zbořil, Radek Chrobak, Artur Pesonen, Lauri J Lepparanta, Matti
n3:wos
000325769800012
s:issn
0956-540X
s:numberOfPages
17
n17:doi
10.1093/gji/ggt253
n12:organizacniJednotka
15310