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Tailing site characterizations using near-surface geophysical tools in south-central Sweden
Norwegian Geotechnicl Institute (ngi).
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.
2021 (English)In: NSG2021 27th European Meeting of Environmental and Engineering Geophysics, European Association of Geoscientists and Engineers, 2021, Vol. 2021, article id 20Conference paper, Published paper (Refereed)
Abstract [en]

Ground Penetrating Radar (GPR) data with two different antenna frequencies i.e. 250 and 300 MHz were used to characterize the spatial distribution of the mine tailings and also image the ground-water level in the tailing repository area of an abandoned mine site in Yxsjöberg. GPR result, after processing provided high-resolution image of the subsurface down to maximum ca. 3.2 m depth which indicated higher for the instrument with 250 MHz antenna frequency, compared to 0.7 m effective penetration depth indicated by the instrument with 300 MHz antenna. The vertical continuation of the tailings was identified down to ca. 0.7 m in the results from both antennas and ground water table was indicated at ca. 3 m depth using the 250 MHz antenna, consistent with data from the nearby well. Self-potential (SP) data indicated steady results; however, incompatible with the topography variations, which is presumably produced due to 3D topography variations being compared with 2D SP data. The link between SP data and topography variations and thereby, ground water movement can be further studied using a 3D SP measurement to better understand the direction of the ground water movement and also check its correlation with topography variations at the site.

Place, publisher, year, edition, pages
European Association of Geoscientists and Engineers, 2021. Vol. 2021, article id 20
National Category
Geophysics
Research subject
Soil Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-89869DOI: 10.3997/2214-4609.202120020Scopus ID: 2-s2.0-85125229063OAI: oai:DiVA.org:ltu-89869DiVA, id: diva2:1648542
Conference
Near Surface Geoscience Conference and Exhibition 2021(NSG 2021), Bordeaux, France, August 29 - September 2, 2021
Available from: 2022-03-31 Created: 2022-03-31 Last updated: 2022-04-12Bibliographically approved

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Kronsell, I.

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