Seismoelectric imaging of the vadose zone of a sand aquifer
We have acquired a 300-m seismoelectric section over an unconfined aquifer to demonstrate the effectiveness of interfacial signals at imaging interfaces in shallow sedimentary environments. The seismoelectric data were acquired by using a 40-kg accelerated weight-drop source and a 24-channel seismoe...
| Main Authors: | , , |
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| Format: | Journal Article |
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Society of Exploration Geophysics
2007
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| Online Access: | http://hdl.handle.net/20.500.11937/16694 |
| _version_ | 1848749249367375872 |
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| author | Dupuis, J. Butler, K. Kepic, Anton |
| author_facet | Dupuis, J. Butler, K. Kepic, Anton |
| author_sort | Dupuis, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We have acquired a 300-m seismoelectric section over an unconfined aquifer to demonstrate the effectiveness of interfacial signals at imaging interfaces in shallow sedimentary environments. The seismoelectric data were acquired by using a 40-kg accelerated weight-drop source and a 24-channel seismoelectric recording system composed of grounded dipoles, preamplifiers, and seismographs. In the shot records, interfacial signals were remarkably clear; they arrived simultaneously at offsets as far as 40 m from the seismic source. The most prominent signal was generated at the water table at a depth of approximately 14 m and had peak amplitudes on the order of 1 V/m. A weaker response was generated at a shallower interface that is interpreted to be a water-retentive layer. The validity of these two laterally continuous events, and of other discontinuous events indicative of vadose-zone heterogeneity, is corroborated by the presence of reflections exhibiting similar characteristics in a ground-penetrating radar profile acquired along the same line. |
| first_indexed | 2025-11-14T07:17:56Z |
| format | Journal Article |
| id | curtin-20.500.11937-16694 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:17:56Z |
| publishDate | 2007 |
| publisher | Society of Exploration Geophysics |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-166942017-09-13T15:43:55Z Seismoelectric imaging of the vadose zone of a sand aquifer Dupuis, J. Butler, K. Kepic, Anton We have acquired a 300-m seismoelectric section over an unconfined aquifer to demonstrate the effectiveness of interfacial signals at imaging interfaces in shallow sedimentary environments. The seismoelectric data were acquired by using a 40-kg accelerated weight-drop source and a 24-channel seismoelectric recording system composed of grounded dipoles, preamplifiers, and seismographs. In the shot records, interfacial signals were remarkably clear; they arrived simultaneously at offsets as far as 40 m from the seismic source. The most prominent signal was generated at the water table at a depth of approximately 14 m and had peak amplitudes on the order of 1 V/m. A weaker response was generated at a shallower interface that is interpreted to be a water-retentive layer. The validity of these two laterally continuous events, and of other discontinuous events indicative of vadose-zone heterogeneity, is corroborated by the presence of reflections exhibiting similar characteristics in a ground-penetrating radar profile acquired along the same line. 2007 Journal Article http://hdl.handle.net/20.500.11937/16694 10.1190/1.2773780 Society of Exploration Geophysics fulltext |
| spellingShingle | Dupuis, J. Butler, K. Kepic, Anton Seismoelectric imaging of the vadose zone of a sand aquifer |
| title | Seismoelectric imaging of the vadose zone of a sand aquifer |
| title_full | Seismoelectric imaging of the vadose zone of a sand aquifer |
| title_fullStr | Seismoelectric imaging of the vadose zone of a sand aquifer |
| title_full_unstemmed | Seismoelectric imaging of the vadose zone of a sand aquifer |
| title_short | Seismoelectric imaging of the vadose zone of a sand aquifer |
| title_sort | seismoelectric imaging of the vadose zone of a sand aquifer |
| url | http://hdl.handle.net/20.500.11937/16694 |