Electric resistivity and seismic refraction tomography: a challenging  joint underwater survey at Äspö Hard Rock Laboratory

Ronczka, Mathias; Hellman, Kristofer; Günther, Thomas; Wisén, Roger; Dahlin, Torleif

doi:https://doi.org/10.5194/se-8-671-2017

Articles | Volume 8, issue 3

Solid Earth, 8, 671–682, 2017

https://doi.org/10.5194/se-8-671-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Solid Earth, 8, 671–682, 2017

https://doi.org/10.5194/se-8-671-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 8, issue 3

Research article 13 Jun 2017

Research article | 13 Jun 2017

Electric resistivity and seismic refraction tomography: a challenging joint underwater survey at Äspö Hard Rock Laboratory

Mathias Ronczka et al.

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Final revised paper (published on 13 Jun 2017)
Preprint (discussion started on 22 Nov 2016)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Review for Roncka et al., SE-2016-157', Anonymous Referee #1, 01 Feb 2017
- AC1: 'Response to review 1', Mathias Ronczka, 02 Mar 2017
RC2: 'Review on the "Electric resistivity and seismic refraction tomography, a challenging joint underwater survey at Äspö Hard Rock Laboratory" by Ronczka et al', Anonymous Referee #2, 06 Feb 2017
- AC2: 'Response to review 2', Mathias Ronczka, 02 Mar 2017

Short summary

Pre-investigation for tunnelling below water passages is a challenging task with the main objective of locating fracture zones that lead to low rock quality and thus reduced stability. An inversion approach was tested that combines different geophysical methods to improve the reliability of the results. A fracture zone and previously unknown sedimentary deposits were successfully detected. Synthetic studies pointed out the importance of 3-D effects and model resolution properties.