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A 3-D resistivity investigation of a contaminated site at Lernacken, Sweden

Dahlin, Torleif LU ; Bernstone, Christian LU and Loke, MH (2002) In Geophysics 67(6). p.1692-1700
Abstract
A contaminated site at Lernacken in southern Sweden, formerly used for sludge disposal, was investigated using a 3-D resistivity imaging technique. The data acquisition was carried out using a roll-along technique for 3-D data acquisition that allows using standard multielectrode equipment designed for engineering and environmental applications. The technique allows for the measurement of large true 3-D resistivity data sets, and data were measured using two perpendicular electrode-orientation directions with only one layout of the cables. The data were plotted as two sets of pseudo depth slices using the two electrode orientation directions, which resulted in markedly different plots. The complete data set was inverted to form a... (More)
A contaminated site at Lernacken in southern Sweden, formerly used for sludge disposal, was investigated using a 3-D resistivity imaging technique. The data acquisition was carried out using a roll-along technique for 3-D data acquisition that allows using standard multielectrode equipment designed for engineering and environmental applications. The technique allows for the measurement of large true 3-D resistivity data sets, and data were measured using two perpendicular electrode-orientation directions with only one layout of the cables. The data were plotted as two sets of pseudo depth slices using the two electrode orientation directions, which resulted in markedly different plots. The complete data set was inverted to form a resistivity-depth model of the ground using a 3-D least-squares smoothness constrained inversion technique. The results obtained were compared to other geophysical and background data, and a good agreement was found. The results show that the 3-D roll-along technique in combination with 3-D inversion can be highly useful for engineering and environmental applications. However, multichannel measurement equipment is necessary to speed up the data acquisition process for routine application. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Geophysics
volume
67
issue
6
pages
1692 - 1700
publisher
Soc Exploration Geophysicists
external identifiers
  • wos:000179840000001
  • scopus:0036866591
ISSN
0016-8033
DOI
10.1190/1.1527070
language
English
LU publication?
yes
id
dbe721eb-1c0d-452e-a4cf-3ee458fe2535 (old id 321316)
date added to LUP
2007-08-02 14:52:13
date last changed
2017-11-05 04:36:57
@article{dbe721eb-1c0d-452e-a4cf-3ee458fe2535,
  abstract     = {A contaminated site at Lernacken in southern Sweden, formerly used for sludge disposal, was investigated using a 3-D resistivity imaging technique. The data acquisition was carried out using a roll-along technique for 3-D data acquisition that allows using standard multielectrode equipment designed for engineering and environmental applications. The technique allows for the measurement of large true 3-D resistivity data sets, and data were measured using two perpendicular electrode-orientation directions with only one layout of the cables. The data were plotted as two sets of pseudo depth slices using the two electrode orientation directions, which resulted in markedly different plots. The complete data set was inverted to form a resistivity-depth model of the ground using a 3-D least-squares smoothness constrained inversion technique. The results obtained were compared to other geophysical and background data, and a good agreement was found. The results show that the 3-D roll-along technique in combination with 3-D inversion can be highly useful for engineering and environmental applications. However, multichannel measurement equipment is necessary to speed up the data acquisition process for routine application.},
  author       = {Dahlin, Torleif and Bernstone, Christian and Loke, MH},
  issn         = {0016-8033},
  language     = {eng},
  number       = {6},
  pages        = {1692--1700},
  publisher    = {Soc Exploration Geophysicists},
  series       = {Geophysics},
  title        = {A 3-D resistivity investigation of a contaminated site at Lernacken, Sweden},
  url          = {http://dx.doi.org/10.1190/1.1527070},
  volume       = {67},
  year         = {2002},
}