Experimental Studies on the Changes in Resistivity and Its Anisotropy Using Electrical Resistivity Tomography
Three measuring lines were arranged on one of free planes of magnetite cuboid samples. Apparent resistivity data were acquired by MIR-2007 resistivity meter when samples were under uniaxial compression of servocontrol YAW-5000F loadingmachine in laboratory. Then we constructed the residual resistivi...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | International Journal of Geophysics |
| Online Access: | http://dx.doi.org/10.1155/2012/142069 |
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| author | Tao Zhu Jian-Guo Zhou Jin-Qi Hao |
| author_facet | Tao Zhu Jian-Guo Zhou Jin-Qi Hao |
| author_sort | Tao Zhu |
| collection | DOAJ |
| description | Three measuring lines were arranged on one of free planes of magnetite cuboid samples. Apparent resistivity data were acquired by MIR-2007 resistivity meter when samples were under uniaxial compression of servocontrol YAW-5000F loadingmachine in laboratory. Then we constructed the residual resistivity images using electrical resistivity tomography (ERT) and plotted the diagrams of apparent resistivity anisotropy coefficient (ARAC) λ∗ and the included angle α between the major axis of apparent resistivity anisotropy ellipse and the axis of load with pressure and effective depth. Our results show that with increasing pressure, resistivity and the decreased (D region) and increased (I region) resistivity regions have complex behaviors, but when pressure is higher than a certain value, the average resistivity decrease and the area of D region expand gradually in all time with the increase of pressure, which may be significant to the monitoring and prediction of earthquake, volcanic activities, and large-scale geologic motions. The effects of pressure on λ∗ and α are not very outstanding for dry magnetite samples. |
| format | Article |
| id | doaj-art-aef77ceacdce4ded9918e2e45ad5fc7d |
| institution | Kabale University |
| issn | 1687-885X 1687-8868 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Geophysics |
| spelling | doaj-art-aef77ceacdce4ded9918e2e45ad5fc7d2025-02-03T06:10:52ZengWileyInternational Journal of Geophysics1687-885X1687-88682012-01-01201210.1155/2012/142069142069Experimental Studies on the Changes in Resistivity and Its Anisotropy Using Electrical Resistivity TomographyTao Zhu0Jian-Guo Zhou1Jin-Qi Hao2Institute of Geophysics, China Earthquake Administration, Beijing 100081, ChinaInstitute of Geophysics, China Earthquake Administration, Beijing 100081, ChinaInstitute of Geophysics, China Earthquake Administration, Beijing 100081, ChinaThree measuring lines were arranged on one of free planes of magnetite cuboid samples. Apparent resistivity data were acquired by MIR-2007 resistivity meter when samples were under uniaxial compression of servocontrol YAW-5000F loadingmachine in laboratory. Then we constructed the residual resistivity images using electrical resistivity tomography (ERT) and plotted the diagrams of apparent resistivity anisotropy coefficient (ARAC) λ∗ and the included angle α between the major axis of apparent resistivity anisotropy ellipse and the axis of load with pressure and effective depth. Our results show that with increasing pressure, resistivity and the decreased (D region) and increased (I region) resistivity regions have complex behaviors, but when pressure is higher than a certain value, the average resistivity decrease and the area of D region expand gradually in all time with the increase of pressure, which may be significant to the monitoring and prediction of earthquake, volcanic activities, and large-scale geologic motions. The effects of pressure on λ∗ and α are not very outstanding for dry magnetite samples.http://dx.doi.org/10.1155/2012/142069 |
| spellingShingle | Tao Zhu Jian-Guo Zhou Jin-Qi Hao Experimental Studies on the Changes in Resistivity and Its Anisotropy Using Electrical Resistivity Tomography International Journal of Geophysics |
| title | Experimental Studies on the Changes in Resistivity and Its Anisotropy Using Electrical Resistivity Tomography |
| title_full | Experimental Studies on the Changes in Resistivity and Its Anisotropy Using Electrical Resistivity Tomography |
| title_fullStr | Experimental Studies on the Changes in Resistivity and Its Anisotropy Using Electrical Resistivity Tomography |
| title_full_unstemmed | Experimental Studies on the Changes in Resistivity and Its Anisotropy Using Electrical Resistivity Tomography |
| title_short | Experimental Studies on the Changes in Resistivity and Its Anisotropy Using Electrical Resistivity Tomography |
| title_sort | experimental studies on the changes in resistivity and its anisotropy using electrical resistivity tomography |
| url | http://dx.doi.org/10.1155/2012/142069 |
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