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Data Quality Quantification for Time Domain IP Data Acquired along a Planned Tunnel near Oslo, Norway

Dahlin, Torleif LU ; Dalsegg, Einar and Sandström, Torbjörn (2013) Procs. Near Surface Geoscience 2013
Abstract
Tests were done measuring resistivity and time domain induced polarisation using standard multi-core cable spreads and a special layout with separate cable spreads for transmitting current and measuring potentials. For both types of cables spreads both normal and reciprocal measurements were done in order to estimate the measurement errors. The tests were done along a planned tunnel stretch outside Olso in Norway. The electrode contact was variable with resistances in the range 0.6 - 25 kΩ. The results gave low

median error levels for both types of cable spreads, but the single cable spread showed a significantly larger variation with more scatter in the IP data. Data for both types of spreads gave models that are consistent and... (More)
Tests were done measuring resistivity and time domain induced polarisation using standard multi-core cable spreads and a special layout with separate cable spreads for transmitting current and measuring potentials. For both types of cables spreads both normal and reciprocal measurements were done in order to estimate the measurement errors. The tests were done along a planned tunnel stretch outside Olso in Norway. The electrode contact was variable with resistances in the range 0.6 - 25 kΩ. The results gave low

median error levels for both types of cable spreads, but the single cable spread showed a significantly larger variation with more scatter in the IP data. Data for both types of spreads gave models that are consistent and appear to delineate the complex geology in a useful way. It is concluded that the single cable spread gives surprisingly good IP data considering the large layouts at this site, which is adequate for inversion of the integrated full decay. If on the other hand the data were to be used for spectral IP inversion of the decay curves for recovering the Cole-Cole parameters the extra effort of measuring with separated cable spreads would probably be well motivated. (Less)
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author
organization
publishing date
type
Contribution to conference
publication status
published
subject
pages
4 pages
conference name
Procs. Near Surface Geoscience 2013
external identifiers
  • scopus:84897476530
language
English
LU publication?
yes
id
6eea8e94-ad77-4930-a032-14dc5397440a (old id 4124004)
date added to LUP
2013-10-25 10:11:26
date last changed
2017-01-01 08:11:53
@misc{6eea8e94-ad77-4930-a032-14dc5397440a,
  abstract     = {Tests were done measuring resistivity and time domain induced polarisation using standard multi-core cable spreads and a special layout with separate cable spreads for transmitting current and measuring potentials. For both types of cables spreads both normal and reciprocal measurements were done in order to estimate the measurement errors. The tests were done along a planned tunnel stretch outside Olso in Norway. The electrode contact was variable with resistances in the range 0.6 - 25 kΩ. The results gave low<br/><br>
median error levels for both types of cable spreads, but the single cable spread showed a significantly larger variation with more scatter in the IP data. Data for both types of spreads gave models that are consistent and appear to delineate the complex geology in a useful way. It is concluded that the single cable spread gives surprisingly good IP data considering the large layouts at this site, which is adequate for inversion of the integrated full decay. If on the other hand the data were to be used for spectral IP inversion of the decay curves for recovering the Cole-Cole parameters the extra effort of measuring with separated cable spreads would probably be well motivated.},
  author       = {Dahlin, Torleif and Dalsegg, Einar and Sandström, Torbjörn},
  language     = {eng},
  pages        = {4},
  title        = {Data Quality Quantification for Time Domain IP Data Acquired along a Planned Tunnel near Oslo, Norway},
  year         = {2013},
}