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Course, academic year 2024/2025
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Electromagnetic induction and conductivity of the Earth - NGEO061
Title: Elektromagnetická indukce a vodivost Země
Guaranteed by: Department of Geophysics (32-KG)
Faculty: Faculty of Mathematics and Physics
Actual: from 2017
Semester: summer
E-Credits: 5
Hours per week, examination: summer s.:2/1, C+Ex [HT]
Capacity: unlimited
Min. number of students: unlimited
4EU+: no
Virtual mobility / capacity: no
State of the course: taught
Language: Czech, English
Teaching methods: full-time
Guarantor: doc. RNDr. Jakub Velímský, Ph.D.
Teacher(s): doc. RNDr. Jakub Velímský, Ph.D.
Classification: Physics > Geophysics
Annotation -
Follow-up lecture to the NGEO080 aiming at theoretical and practical aspects of EM induction technique on different spatiotemporal scales.
Last update: T_KG (01.05.2013)
Aim of the course -

Enhancement of theoretical and practical knowledge of EM induction method.

Last update: T_KG (01.05.2013)
Course completion requirements - Czech

Podmínkou pro udělení zápočtu je aktivní účast na polním měření ve spolupráci s GFÚ AV ČR, jehož termín se stanoví po dohodě se studenty. V případě neúčasti lze získat zápočet vypracováním domácího úkolu (s možností vrácení učitelem k opravám a doplnění). Získání zápočtu je podmínkou pro konání zkoušky. Forma zkoušky je ústní nebo distanční (telecon), požadavky odpovídají sylabu v rozsahu prezentovaném na přednášce.

Last update: Velímský Jakub, doc. RNDr., Ph.D. (09.09.2020)
Literature - Czech
  • Fiona Simpson, Karsten Bahr, Practical magnetotellurics, Cambridge University Press, 2005.

  • Alan Chave, Alan Jones (Eds.), The magnetotelluric method: theory and practice, Cambridge University Press, 2012.

  • Mark Berdichevsky, V. Dmitriev, Models and Methods of Magnetotellurics, Springer 2008.

Last update: T_KG (01.05.2013)
Teaching methods -

Lecture and field exercises

Last update: Velímský Jakub, doc. RNDr., Ph.D. (06.10.2017)
Syllabus -
Global EM induction

EM induction equation in spherical coordinates, 1-D and 2-D problems, semi-analytical solution for nested-spheres model. Use of satellite data in induction studies. Magnetic signals generated by tides and ocean flows.

Magnetotellurics

Equation of EM induction, TE and TM modes. Electrical conductivity of Earth materials. External fields. Transfer functions: from theory to practical calculations. Distortions of MT data. Forward and inverse modeling. Instrumentation. Applications in prospection.

Electrical conductivity

Conductivity mechanisms, pressure and temperature dependence, conductivity of multiphase materials, experimental measurements.

Field exercises (in cooperation with Institute of Geophysics, Czech Academy of Sciences)

Practical measurements. Instrument installation, data acquisition, processing, and interpretation.

Last update: T_KG (03.05.2013)
 
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