HALL CONDUCTIVITY ESTIMATES FROM MAGNETOTELLURIC SOUNDING DATA
Many minerals have semiconductor properties. It is known that petroleum reservoir rocks permeated with hydrocarbon fluids can sometimes behave as semiconductors. In the Earth’s magnetic field, the electrical conductivity of such materials becomes anisotropic, and the Hall effect is quite possible in...
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Russian Academy of Sciences, Siberian Branch, Institute of the Earth's crust
2020-12-01
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| Series: | Геодинамика и тектонофизика |
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| Online Access: | https://www.gt-crust.ru/jour/article/view/1127 |
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| author | V. Plotkin V. V. Potapov |
| author_facet | V. Plotkin V. V. Potapov |
| author_sort | V. Plotkin |
| collection | DOAJ |
| description | Many minerals have semiconductor properties. It is known that petroleum reservoir rocks permeated with hydrocarbon fluids can sometimes behave as semiconductors. In the Earth’s magnetic field, the electrical conductivity of such materials becomes anisotropic, and the Hall effect is quite possible in rocks in natural conditions and detectable by magnetotelluric sounding. In the anisotropic medium, the field is subject to normal mode splitting, and its components show different attenuation coefficients and phase velocities. The modes differ due to polarization and rotation of the field vectors (clockwise in one mode, and counterclockwise in another). With account of the Hall effect, responses of the medium can be different when the medium is excited by a single normal wave. To detect the Hall effect in MTS surveys, we use the polarization analysis method and select the spectra of modes with right and left circular polarization. Special experiments were carried out to detect the contribution of the Hall effect during the MTS surveys. This article presents the first estimates of the Hall conductivity for the studied rocks. |
| format | Article |
| id | doaj-art-aeeda420c539484fb10dc28a86fca06c |
| institution | DOAJ |
| issn | 2078-502X |
| language | English |
| publishDate | 2020-12-01 |
| publisher | Russian Academy of Sciences, Siberian Branch, Institute of the Earth's crust |
| record_format | Article |
| series | Геодинамика и тектонофизика |
| spelling | doaj-art-aeeda420c539484fb10dc28a86fca06c2025-08-20T03:02:39ZengRussian Academy of Sciences, Siberian Branch, Institute of the Earth's crustГеодинамика и тектонофизика2078-502X2020-12-0111481782810.5800/GT-2020-11-4-0509507HALL CONDUCTIVITY ESTIMATES FROM MAGNETOTELLURIC SOUNDING DATAV. Plotkin0V. V. Potapov1Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of the Russian Academy of SciencesTrofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of the Russian Academy of SciencesMany minerals have semiconductor properties. It is known that petroleum reservoir rocks permeated with hydrocarbon fluids can sometimes behave as semiconductors. In the Earth’s magnetic field, the electrical conductivity of such materials becomes anisotropic, and the Hall effect is quite possible in rocks in natural conditions and detectable by magnetotelluric sounding. In the anisotropic medium, the field is subject to normal mode splitting, and its components show different attenuation coefficients and phase velocities. The modes differ due to polarization and rotation of the field vectors (clockwise in one mode, and counterclockwise in another). With account of the Hall effect, responses of the medium can be different when the medium is excited by a single normal wave. To detect the Hall effect in MTS surveys, we use the polarization analysis method and select the spectra of modes with right and left circular polarization. Special experiments were carried out to detect the contribution of the Hall effect during the MTS surveys. This article presents the first estimates of the Hall conductivity for the studied rocks.https://www.gt-crust.ru/jour/article/view/1127magnetotelluric sounding (mts)hall effectnormal mode of anisotropic mediumhall conductivity |
| spellingShingle | V. Plotkin V. V. Potapov HALL CONDUCTIVITY ESTIMATES FROM MAGNETOTELLURIC SOUNDING DATA Геодинамика и тектонофизика magnetotelluric sounding (mts) hall effect normal mode of anisotropic medium hall conductivity |
| title | HALL CONDUCTIVITY ESTIMATES FROM MAGNETOTELLURIC SOUNDING DATA |
| title_full | HALL CONDUCTIVITY ESTIMATES FROM MAGNETOTELLURIC SOUNDING DATA |
| title_fullStr | HALL CONDUCTIVITY ESTIMATES FROM MAGNETOTELLURIC SOUNDING DATA |
| title_full_unstemmed | HALL CONDUCTIVITY ESTIMATES FROM MAGNETOTELLURIC SOUNDING DATA |
| title_short | HALL CONDUCTIVITY ESTIMATES FROM MAGNETOTELLURIC SOUNDING DATA |
| title_sort | hall conductivity estimates from magnetotelluric sounding data |
| topic | magnetotelluric sounding (mts) hall effect normal mode of anisotropic medium hall conductivity |
| url | https://www.gt-crust.ru/jour/article/view/1127 |
| work_keys_str_mv | AT vplotkin hallconductivityestimatesfrommagnetotelluricsoundingdata AT vvpotapov hallconductivityestimatesfrommagnetotelluricsoundingdata |