Vertical seismoelectric profiling in a borehold penetrating glaciofluvial sediments
Seismoelectric signals have been measured as a function of depth in a borehole penetrating glaciofluvial sands, silts, and glacial till using a broadband surface seismic source, and a downhole electrode array. Transient electric field pulses, with amplitudes of 1 to 4 μV/m accompanied the arrival of...
| Main Authors: | , |
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| Format: | Journal Article |
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AMERICAN GEOPHYSICAL UNION
2006
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| Online Access: | http://hdl.handle.net/20.500.11937/22069 |
| _version_ | 1848750767272361984 |
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| author | Dupuis, Christian Butler, K. |
| author_facet | Dupuis, Christian Butler, K. |
| author_sort | Dupuis, Christian |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Seismoelectric signals have been measured as a function of depth in a borehole penetrating glaciofluvial sands, silts, and glacial till using a broadband surface seismic source, and a downhole electrode array. Transient electric field pulses, with amplitudes of 1 to 4 μV/m accompanied the arrival of seismic P-waves at the electrodes but no simultaneous interfacial signals were observed above the noise floor of approximately 0.2 μV/m. The co-seismic effect was strongest in a sand and gravel layer where its amplitude is consistent with the predictions of a simplified theoretical model. Normalization of the amplitude logs by measurements of seismic particle velocity and electrical conductivity enhanced their sensitivity to changes in lithology and porosity. The results of this experiment suggest that co-seismic seismoelectric effects show potential as a porosity/permeability logging tool in the borehole environment. |
| first_indexed | 2025-11-14T07:42:04Z |
| format | Journal Article |
| id | curtin-20.500.11937-22069 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:42:04Z |
| publishDate | 2006 |
| publisher | AMERICAN GEOPHYSICAL UNION |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-220692017-09-13T15:57:56Z Vertical seismoelectric profiling in a borehold penetrating glaciofluvial sediments Dupuis, Christian Butler, K. Seismoelectric signals have been measured as a function of depth in a borehole penetrating glaciofluvial sands, silts, and glacial till using a broadband surface seismic source, and a downhole electrode array. Transient electric field pulses, with amplitudes of 1 to 4 μV/m accompanied the arrival of seismic P-waves at the electrodes but no simultaneous interfacial signals were observed above the noise floor of approximately 0.2 μV/m. The co-seismic effect was strongest in a sand and gravel layer where its amplitude is consistent with the predictions of a simplified theoretical model. Normalization of the amplitude logs by measurements of seismic particle velocity and electrical conductivity enhanced their sensitivity to changes in lithology and porosity. The results of this experiment suggest that co-seismic seismoelectric effects show potential as a porosity/permeability logging tool in the borehole environment. 2006 Journal Article http://hdl.handle.net/20.500.11937/22069 10.1029/2006GL026385 AMERICAN GEOPHYSICAL UNION fulltext |
| spellingShingle | Dupuis, Christian Butler, K. Vertical seismoelectric profiling in a borehold penetrating glaciofluvial sediments |
| title | Vertical seismoelectric profiling in a borehold penetrating glaciofluvial sediments |
| title_full | Vertical seismoelectric profiling in a borehold penetrating glaciofluvial sediments |
| title_fullStr | Vertical seismoelectric profiling in a borehold penetrating glaciofluvial sediments |
| title_full_unstemmed | Vertical seismoelectric profiling in a borehold penetrating glaciofluvial sediments |
| title_short | Vertical seismoelectric profiling in a borehold penetrating glaciofluvial sediments |
| title_sort | vertical seismoelectric profiling in a borehold penetrating glaciofluvial sediments |
| url | http://hdl.handle.net/20.500.11937/22069 |