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Mathematisch-Naturwissenschaftliche FakultätInstitut für Geophysik und Meteorologie

MN-GM-GEOEEM

Compulsory for main focus geophysics: Direct Current and Electromagnetic Exploration Methods
Identification number
MN-GM-GEOEEM		 Workload

180 h		 Credits

6		 Term of studying
1st - 3rd semester		 Frequency of
occurrence
Winter term		 Duration

1 semester
1 Type of lessons
a) Lectures
b) Tutorials		 Contact times
45 h
30 h		 Self-study times
45 h
60 h		 Intended group size
15
2

Aims of the module and acquired skills

  • Knowledge of the principles of electromagnetic methods and overview of their applications
  • Theory of electromagnetic methods, data analysis and modeling of DC-resistivity and electromagnetic data in frequency and time domain
  • Ability to analyse electromagnetic data and to model them with multidimensional conductivity models
3

Contents of the module

  • DC methods: basic equations, potential of the single electrode, solution of the Laplace equation for 1D earth, inversion of DC data, 1D and 2D forward modelling of DC data
  • Electromagnetic induction: basic equations, induction in 1D earth, 2D conductivity models, field measurements and data analysis, quantitative interpretation, passive EM methods, active EM methods (Magnetotelluric and Geomagnetic Deep Soundings, Time Domain Methods)
4 Teaching/Learning methods

Lectures and tutorials (compulsory attendance in the tutorials)
5 Requirements for participation

Formal: None.

Knowledge of basics of mathematics, physics and applied geophysics is strongly advised.
6

Type of module examinations

Written Examination (graded)
7 Requisites for the allocation of credits

Successful participation in the exercises (50 % of the possible points have to be obtained) and passing of the examination.

At the end of the semester or to the beginning of the following semester a possibility to repeat the examination is offered. A failed examination may be repeated twice. Additional possibilities to repeat an examination exist according to the examination regulations (§ 20 section 1).

Assessments which have been passed are not allowed to be taken again. There is an exception: If at the end of a module which consists of a lecture and tutorial classes, the student takes the assessment at the first available date after having received admission to the module exam, he/she is then allowed to take the assessment again at the next available date for the purpose of improving the grade, even if he/she passed the assessment the first time – in this case, the better of the two grades will count towards the final degree grade (§ 20 section 9).

The module mark is the grade obtaines in the assessment. In the case of two passed assessments the module mark is the better grade.
8 Compatibility with other Curricula
  • Other modules of equal value can be admitted and announced by the examination board after agreement
  • Suitable as an elective course for mathematics, physics and geoscience students
9 Significance of the module mark for the overall grade

6/120
10 Module coordinator

B. Tezkan
11 Additional information

Recommended Literature:

W.E. Telford et. al., Applied Geophysics, Cambridge University Press, 1990.
O. Koefed, Geosounding principles, Vol. 1, Springer Verlag, 1985.
Nabighian, M.N., Electromagnetic soundings in applied geophysics, SEG,1987.
Simpson and Bahr, Practical magnetotellurics, Cambridge University Press, 2005.
M.S. Zhadanov and G.V. Keller, The geoelectrical methods in applied geophysics, SEG, 1987.
B. Buttkus, Spektralanalyse und Filtertheorie in der Angewandten Geophysik , Springer Verlag, 1991.
D. S. Parasanis, Principles of Aplied Geophysics, Halsted Press Book, 1979.