Study program:
Geophysics (VII semester -BsC) |
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Name of subject: Electrometry |
Instructors:
Prof. Ivana Vasiljević, Branislav Sretković |
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Status: Compulsory |
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ECTS: 5 |
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Prerequisites: - |
Course Objectives:
The course goal is to establish detail knowledge in the field of Apparent Resistivity method (one of the most frequently used active geophysical method) as well as further expertise in Spontaneous Potential (SP), Induced Polarization (IP), Potential Drop Ratio, Equipotential Lines and Buried Electrode methods. Students gain knowledge on electrical fields in the case of 1D, 2D and 3D structures, inhomogeneites of various kinds and electrical anisotropy. |
Learning Outcomes:
The outcome achieved by the teaching process should be highly trained students in Project designing, field data measurements and data acquisition, apparent resistivity data processing as well as qualitative and quantitative interpretation (1D,2D,3D,4D and Anisotropy analysis).
Students also get general knowledge and expertise in Spontaneous Potential (SP), Induced Polarization (IP), Potential Drop Ratio, Equipotential Lines and Buried Electrode methods. |
Content:
Theory teaching
Electrical properties of minerals and rocks, electrical conduction mechanisms (electronic, ionic-electrolytic, dielectric), resistivity dependence on pressure and temperature, Classification of electrical methods of investigation, definition of apparent resistivity, electrode configurations, noises and signal to noise ratio, geoelectrical sounding (VES) and types of apparent resistivity curves (forward modelling), 1D numerical interpretation of apparent resistivity curves (inverse modelling), equivalence principles, anisotropy and topography effect in 1D inversion, electrical imagining (ERI) and electrical tomography techniques, 2D forward modeling of apparent resistivity and IP data, 2D inversion of apparent resistivity (ERI data) and IP data, 3D forward and inverse modelling in the case of spherical body, 3D forward modeling for the arbitrary shaped bodies (app. resistivity and IP domain), 3D Inversion of apparent resistivity and IP data, electrical tomography inversion, anisotropic analysis (based on the model of homogenous and isotropic half-space). Practical teaching
Theoretical considerations combined with PPT presentations. Practical exercises in solving 1D, 2D, 3D forward modelling (various models) and 1d, 2D and 3D inversion of data sets previously calculated by forward modelling routines (with some noise level added to theoretically calculated data). |
Suggested Reading List:
- Slimak Š.,1996: Inženjerska geofizika.Rudarsko-geološki fakultet, Beograd.
- Aranđelović D.,1976: Geofizika na karstu. Geofizički Institut,Beograd.
- Aranđelović D., 2001: Primena geofizike u inženjerskoj geologiji i hidrogeologiji. NIS-Naftagas, Novi Sad.
- Sretenović B., Đekić S., 2003: Geofizika i zaštita životne sredine. Rudarsko-geološki fakultet,Beograd.
- J.J.Jakosky, 1964: Geofizička istraživanja. Rudarsko-geološki fakultet, Beograd.
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Conduct of the Course:
Apart from classical lectures 1D, 2D and 3D forward and inverse modelling programs are used in order to gain experience in limitations of apparent resistivity data (thin layer, horizontal and vertical resolution, equivalence principle). Power point presentations of case studies in different application of apparent resistivity method. |
Fund hours:
| Lectures |
Exercises |
Other forms of teaching |
Study research |
| 2 |
2 |
0 |
0 |
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Assessment:
| Final Exam |
ECTS |
| Oral Exam | 30 |
| Classwork Assessment |
ECTS |
| Class Participationа | 5 | | Practical Classes | 35 | | Written tests | 30 |
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Additional Assessment Criteria: - |
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