Combination of 1D laterally constrained inversion and 2D smooth inversion of resistivity data with a priori data from boreholes
(2005) In Near Surface Geophysics 3(2). p.71-79- Abstract
Resistivity imaging in combination with borehole information is a powerful tool for site investigation. We show that the combination of 1D laterally constrained inversion (1D-LCI) with the use of a priori information from borehole data and 2D smooth inversion adds significant value to the interpretation of continuous vertical electrical sounding (CVES) data. The 1D-LCI offers an analysis of the resolution of the model parameters. This is helpful when evaluating the integrity of the model. Furthermore, with the 1D-LCI it is possible to constrain model parameters with a priori information, e.g. depth-to-layer interfaces, based on borehole information. We show that 2D smooth inversion resolves lateral changes well, while 1D-LCI results in... (More)
Resistivity imaging in combination with borehole information is a powerful tool for site investigation. We show that the combination of 1D laterally constrained inversion (1D-LCI) with the use of a priori information from borehole data and 2D smooth inversion adds significant value to the interpretation of continuous vertical electrical sounding (CVES) data. The 1D-LCI offers an analysis of the resolution of the model parameters. This is helpful when evaluating the integrity of the model. Furthermore, with the 1D-LCI it is possible to constrain model parameters with a priori information, e.g. depth-to-layer interfaces, based on borehole information. We show that 2D smooth inversion resolves lateral changes well, while 1D-LCI results in well-defined horizontal layer interfaces. In geological environments where the lateral variations are not too pronounced, the 1D-LCI contributes to a geological interpretation of the resistivity measurements. Depths to layers can be interpreted with greater certainty than if using results from 2D smooth inversion only. The inclusion of a priori information in the inversion reveals further details and enhances the geological interpretation significantly.
(Less)
- author
- Wisén, Roger LU ; Auken, Esben and Dahlin, Torleif LU
- organization
- publishing date
- 2005-05
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Near Surface Geophysics
- volume
- 3
- issue
- 2
- pages
- 9 pages
- publisher
- EAGE
- external identifiers
-
- scopus:26644443349
- ISSN
- 1569-4445
- DOI
- 10.3997/1873-0604.2005002
- language
- English
- LU publication?
- yes
- additional info
- Funding Information: We thank the City Tunnel Project and Tyréns AB for providing an interesting case study and high-quality geotechnical and geological data. We also thank Jens Enstedt Danielsen, Anders Vest Christiansen and Lone Davidsen for thorough reviews of the manuscript. Publisher Copyright: © 2005 European Association of Geoscientists and Engineers.
- id
- e0f477c3-7962-4e30-82d8-4012aa3a1165
- date added to LUP
- 2023-09-15 11:07:08
- date last changed
- 2023-09-18 11:25:18
@article{e0f477c3-7962-4e30-82d8-4012aa3a1165,
abstract = {{<p>Resistivity imaging in combination with borehole information is a powerful tool for site investigation. We show that the combination of 1D laterally constrained inversion (1D-LCI) with the use of a priori information from borehole data and 2D smooth inversion adds significant value to the interpretation of continuous vertical electrical sounding (CVES) data. The 1D-LCI offers an analysis of the resolution of the model parameters. This is helpful when evaluating the integrity of the model. Furthermore, with the 1D-LCI it is possible to constrain model parameters with a priori information, e.g. depth-to-layer interfaces, based on borehole information. We show that 2D smooth inversion resolves lateral changes well, while 1D-LCI results in well-defined horizontal layer interfaces. In geological environments where the lateral variations are not too pronounced, the 1D-LCI contributes to a geological interpretation of the resistivity measurements. Depths to layers can be interpreted with greater certainty than if using results from 2D smooth inversion only. The inclusion of a priori information in the inversion reveals further details and enhances the geological interpretation significantly.</p>}},
author = {{Wisén, Roger and Auken, Esben and Dahlin, Torleif}},
issn = {{1569-4445}},
language = {{eng}},
number = {{2}},
pages = {{71--79}},
publisher = {{EAGE}},
series = {{Near Surface Geophysics}},
title = {{Combination of 1D laterally constrained inversion and 2D smooth inversion of resistivity data with a priori data from boreholes}},
url = {{http://dx.doi.org/10.3997/1873-0604.2005002}},
doi = {{10.3997/1873-0604.2005002}},
volume = {{3}},
year = {{2005}},
}