Integrated Interpretation of Magnetic and ERT Data to Characterize a Landfill in the North-West of Cologne, Germany
Abstract Electrical resistivity tomography (ERT) and ground magnetic surveys were applied to characterize an old uncontrolled landfill in a former exploited sand and gravel quarry in an area to the north-west of the city of Cologne, Germany. The total magnetic field and its vertical gradient were re...
Published in: | Pure and Applied Geophysics |
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Springer Science and Business Media LLC
2021
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crspringernat:10.1007/s00024-021-02750-x 2023-05-15T17:39:16+02:00 Integrated Interpretation of Magnetic and ERT Data to Characterize a Landfill in the North-West of Cologne, Germany Ibraheem, Ismael M. Tezkan, Bülent Bergers, Rainer Volkswagen Foundation Universität zu Köln 2021 http://dx.doi.org/10.1007/s00024-021-02750-x https://link.springer.com/content/pdf/10.1007/s00024-021-02750-x.pdf https://link.springer.com/article/10.1007/s00024-021-02750-x/fulltext.html en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Pure and Applied Geophysics volume 178, issue 6, page 2127-2148 ISSN 0033-4553 1420-9136 Geochemistry and Petrology Geophysics journal-article 2021 crspringernat https://doi.org/10.1007/s00024-021-02750-x 2022-01-14T15:39:55Z Abstract Electrical resistivity tomography (ERT) and ground magnetic surveys were applied to characterize an old uncontrolled landfill in a former exploited sand and gravel quarry in an area to the north-west of the city of Cologne, Germany. The total magnetic field and its vertical gradient were recorded using a proton precession magnetometer to cover an area of about 43,250 m 2 . The magnetic data were transferred to the frequency domain and then reduced to the north magnetic pole. The amplitude of the analytical signal was calculated to define the magnetic materials within and outside the landfill. Eight ERT profiles were constructed based on the results of the magnetic survey using different electrode arrays (Wenner, dipole–dipole, and Schlumberger). In order to increase both data coverage and sensitivity and to decrease uncertainty, a non-conventional mixed array was used. The subsurface resistivity distributions were imaged using the robust (L1-norm) inversion method. The resultant inverted subsurface true resistivity data were presented in the form of 2D cross sections and 3D fence diagram. These non-invasive geophysical tools helped us to portray the covering soil, the spatial limits of the landfill, and the depth of the waste body. We also successfully detected low resistivity zones at deeper depths than expected, which probably be associated with migration pathways of the leachate plumes. The findings of the present study provide valuable information for decision makers with regards to environmental monitoring and assessment. Article in Journal/Newspaper North Magnetic Pole Springer Nature (via Crossref) Pure and Applied Geophysics |
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Springer Nature (via Crossref) |
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crspringernat |
language |
English |
topic |
Geochemistry and Petrology Geophysics |
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Geochemistry and Petrology Geophysics Ibraheem, Ismael M. Tezkan, Bülent Bergers, Rainer Integrated Interpretation of Magnetic and ERT Data to Characterize a Landfill in the North-West of Cologne, Germany |
topic_facet |
Geochemistry and Petrology Geophysics |
description |
Abstract Electrical resistivity tomography (ERT) and ground magnetic surveys were applied to characterize an old uncontrolled landfill in a former exploited sand and gravel quarry in an area to the north-west of the city of Cologne, Germany. The total magnetic field and its vertical gradient were recorded using a proton precession magnetometer to cover an area of about 43,250 m 2 . The magnetic data were transferred to the frequency domain and then reduced to the north magnetic pole. The amplitude of the analytical signal was calculated to define the magnetic materials within and outside the landfill. Eight ERT profiles were constructed based on the results of the magnetic survey using different electrode arrays (Wenner, dipole–dipole, and Schlumberger). In order to increase both data coverage and sensitivity and to decrease uncertainty, a non-conventional mixed array was used. The subsurface resistivity distributions were imaged using the robust (L1-norm) inversion method. The resultant inverted subsurface true resistivity data were presented in the form of 2D cross sections and 3D fence diagram. These non-invasive geophysical tools helped us to portray the covering soil, the spatial limits of the landfill, and the depth of the waste body. We also successfully detected low resistivity zones at deeper depths than expected, which probably be associated with migration pathways of the leachate plumes. The findings of the present study provide valuable information for decision makers with regards to environmental monitoring and assessment. |
author2 |
Volkswagen Foundation Universität zu Köln |
format |
Article in Journal/Newspaper |
author |
Ibraheem, Ismael M. Tezkan, Bülent Bergers, Rainer |
author_facet |
Ibraheem, Ismael M. Tezkan, Bülent Bergers, Rainer |
author_sort |
Ibraheem, Ismael M. |
title |
Integrated Interpretation of Magnetic and ERT Data to Characterize a Landfill in the North-West of Cologne, Germany |
title_short |
Integrated Interpretation of Magnetic and ERT Data to Characterize a Landfill in the North-West of Cologne, Germany |
title_full |
Integrated Interpretation of Magnetic and ERT Data to Characterize a Landfill in the North-West of Cologne, Germany |
title_fullStr |
Integrated Interpretation of Magnetic and ERT Data to Characterize a Landfill in the North-West of Cologne, Germany |
title_full_unstemmed |
Integrated Interpretation of Magnetic and ERT Data to Characterize a Landfill in the North-West of Cologne, Germany |
title_sort |
integrated interpretation of magnetic and ert data to characterize a landfill in the north-west of cologne, germany |
publisher |
Springer Science and Business Media LLC |
publishDate |
2021 |
url |
http://dx.doi.org/10.1007/s00024-021-02750-x https://link.springer.com/content/pdf/10.1007/s00024-021-02750-x.pdf https://link.springer.com/article/10.1007/s00024-021-02750-x/fulltext.html |
genre |
North Magnetic Pole |
genre_facet |
North Magnetic Pole |
op_source |
Pure and Applied Geophysics volume 178, issue 6, page 2127-2148 ISSN 0033-4553 1420-9136 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1007/s00024-021-02750-x |
container_title |
Pure and Applied Geophysics |
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1766140037608505344 |