Magnetic properties of soils from sites with different geological and environmental settings

Fialová, Hana; Maier, G.; Petrovský, Eduard; Kapička, A.; Boyko, T.; Scholger, Robert; Team, Magprox

doi:10.1016/j.jappgeo.2005.10.006

Cited by 121 publications

(73 citation statements)

References 30 publications

(28 reference statements)

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“…This trend implies the presence of some influencing factors on χ lf and χ ARM , such as the lithogenic mineral concentrations found in various bedrock or sediment types. These differences have also been found by other researchers (Hanesch and Scholger, 2005;Fialova et al, 2006). In contrast, SIRM of soils derived from river alluvium was significantly higher than the other two categories, indicating that the magnetic mineral concentration of remanence-bearing minerals is higher in alluvial parent material.…”

Section: Magnetic Properties Of Different Soil Categoriessupporting

confidence: 84%

“…For example, soil developed from basalt usually has much higher susceptibility than other bedrock types because of its high background content of iron oxides (Thompson and Oldfield, 1986;Lu, 2000b;Wang et al, 2000;Rao et al, 2007). Previous studies have concluded that, overall, parent material is a critical factor determining the type and concentration of magnetic minerals (Fialova et al, 2006;Blundell et al, 2009a). Other natural factors, such as climate, topography, water regime, organisms, etc.…”

Section: Introductionmentioning

confidence: 99%

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Magnetic properties of agricultural soil in the Pearl River Delta, South China — Spatial distribution and influencing factor analysis

Bian

Ouyang

Zhu

et al. 2014

Journal of Applied Geophysics

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Section: Magnetic Properties Of Different Soil Categoriessupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Magnetic properties of agricultural soil in the Pearl River Delta, South China — Spatial distribution and influencing factor analysis

Bian

Ouyang

Zhu

et al. 2014

Journal of Applied Geophysics

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“…In the study area, the soil magnetic susceptibility (j) was lower (measurement with forest litter) or comparable and lower (measurement without forest litter) than the soil j values observed in other Polish and European industrial regions (Boyko et al 2004;Schmidt et al 2005;Fialová et al 2006;Magiera et al 2006a;Magiera and Zawadzki 2007;Wojas 2009). In the southern and central part of the study area, there were a few magnetic anomalies observed (i.e.…”

Section: Magnetic Susceptibility Of Soilsmentioning

confidence: 46%

The influence of the wind direction and plants on the variability of topsoil magnetic susceptibility in industrial and urban areas of southern Poland

2016

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Volume magnetic susceptibility (j) was measured on the soil surface and in the vertical topsoil profile within a 300 km 2 area located in an urban-industrial conurbation. The results were compared to plant species compositions in the forest storeys, elevation above sea level, and terrain geomorphology. The content and mineral composition of the magnetic fraction were determined in the soil horizons. It was found that the extent of the area with enhanced topsoil magnetic susceptibility was similar to the dominant wind direction (south-west). Enhanced j values were observed for the soil at the forest margin on the leeward side of the emitters as well as at sites located on exposed local elevations (C10 m). There were no significant correlations between species composition of the forest stand and soil surface j value (measured both with and without forest litter). Soil covered with deciduous treesmostly ash (Fraxinus excelsior L.)-demonstrated higher j values than soil under coniferous tree species. However, our results suggest that this parameter is not controlled by individual tree species, but rather depends on distance from emission sources, intensity of magnetic particle emission, and meteorological conditions (prevailing wind directions and dynamics).

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“…The magnetic properties of soils proved to be suitable parameters, as they reflect the various degrees of contamination due to human activities and allow us to detect the area most affected by pollution. The measurement of magnetic properties in samples taken in soil profiles enables: 1) acquisition of information about the boundary depth between polluted soil and clean soil (Blaha et al, 2008), 2) discrimination between anthropogenic and lithogenic contributions (Fialová et al, 2006;Magiera et al, 2006), 3) discovery of the underlying parent material's influence on the magnetic signal (Hanesch and Scholger, 2005), 4) understanding of the development of pedogenic processes (Jordanova et al, 2010;Maher et al, 2002) and 5) attainment of climate reconstructions (Alekseeva et al, 2007;Maher et al, 2002). In the present study, data from 6 soil profiles, which formed on diverse parent material and in different environments (rural/urban), are analysed.…”

Section: Introductionmentioning

confidence: 99%

Magnetic, geochemical and pedological characterisation of soil profiles from different environments and geological backgrounds near Coimbra, Portugal

et al. 2014

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This study presents an application of environmental magnetism techniques for the characterisation of the soils near Coimbra (central Portugal). Magnetic measurements, scanning electron microscopy and geochemical studies were carried out on samples collected in 6 soil profiles in order to find possible relationships and to interpret environmental implications. Magnetic susceptibility, saturation isothermal remanent magnetisation and isothermal remanent magnetisation at the backfield of 100 mT and 300 mT were measured. HardIRM %, SIRM/χ and S-ratios were also calculated. Polluted soils showed higher values of magnetic parameters in the superficial soil horizons closer to the roads, plants and urban areas. The lowest values were observed in the deeper horizons of the soil and in the areas least disturbed by human activity. The magnetic results also suggested that the magnetic signal of these soils is mainly influenced by ferrimagnetic magnetite-like minerals and with only a minor contribution from antiferromagnetic carriers (such as hematite minerals). In unpolluted soils, lithogenic contribution is reflected by the enhancement of magnetic susceptibility near parental rock material. Scanning electron microscope images of the topsoil samples revealed the presence of magnetic spherules typical of vehicular exhaust and combustion processes. This evidence suggests that the atmospheric deposition of fly ash is the main reason for the enhancement of the magnetic signal in the topsoil. Chemical analyses showed that the concentration of various heavy metals was higher than the mean background values for Portuguese soils, and higher in superficial soils. Heavy metals showed significant positive correlation with magnetic properties. The conclusions highlight the importance of using environmental magnetism methods and techniques in the evaluation process of soil evolution and pollution history throughout time.

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Magnetic properties of soils from sites with different geological and environmental settings

Cited by 121 publications

References 30 publications

Magnetic properties of agricultural soil in the Pearl River Delta, South China — Spatial distribution and influencing factor analysis

Magnetic properties of agricultural soil in the Pearl River Delta, South China — Spatial distribution and influencing factor analysis

The influence of the wind direction and plants on the variability of topsoil magnetic susceptibility in industrial and urban areas of southern Poland

Magnetic, geochemical and pedological characterisation of soil profiles from different environments and geological backgrounds near Coimbra, Portugal

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