Principles and Methods of Magnetic Exploration

Veranstalter: Tilo von Dobeneck, Yang Zhang

Inhalt:

Magnetic properties and magnetizations of minerals and rocks
Introduction to magnetic potential field theory
Characteristics of magnetic dipole and monopole anomalies
Idealized and generalized geological anomaly sources
Processing strategies and algorithms for magnetic survey data
Levelling and gridding of aero- and ground magnetic data with Geosoft Oasis Montaj
Bandpass and gradient filtering, upward continuation and reduction to the pole
Depth estimates of magnetic anomaly sources and crystalline basement
Supervised processing and visualization of ground magnetic survey data
2D forward modelling of magnetic anomalies and source structures
3D forward modelling of magnetic anomalies and source structures
Supervised modelling and interpretation of ground magnetic survey data
Applications of magnetic survey methods in structural geology and mineral exploration
Applications of magnetic survey methods in archaeology and engineering geology

Kompetenzen:

- realize, consider and predict, how subsurface materials and structures, geomagnetic settings and magnetic field geometry contribute to observed magnetic anomaly patterns
- process, visualize, analyze, evaluate and report magnetic survey datasets with competent use of state-of-the-art processing and modelling techniques and software packages
- have an insight into the applications, prospects and limitations of magnetic exploration in structural geology, mineral resource exploration, archeology and UXO detection

Bewertung:

Part 2 of team report with individualized tasks and chapter covering data processing and structural interpretation of own field survey data

Prüfungsform:

Projektarbeitsbericht

Literatur:

1) Gravity and Magnetic Exploration, W.J. Hinze, R.R.B. von Frese & A.H. Saad, Cambridge Press, 512 S.
2) Applied Geophysics, W.M. Telford, L.P. Geldart & R.E. Sheriff, Cambridge University Press, 770 S.
3) Powerpoint scripts und special publications made available in Stud.IP

Lehrinhalte:

1. SWS: Magnetic Properties and Magnetizations of Minerals and Rocks
2. SWS: Introduction to Magnetic Potential Field Theory
3. SWS: Characteristics of Magnetic Dipole and Monopole Anomalies
4. SWS: Idealized and Generalized Geological Anomaly Sources
5. SWS: Processing Strategies and Algorithms for Magnetic Survey Data
6. SWS: Levelling and Gridding of Aero- and Ground Magnetic Data With Geosoft Oasis Montaj
7. SWS: Bandpass and Gradient Filtering, Upward Continuation and Reduction to the Pole
8. SWS: Depth Estimates of Magnetic Anomaly Sources and Crystalline Basement
9. SWS: Supervised Processing and Visualization of Ground Magnetic Survey Data
10. SWS: 2D Forward Modelling of Magnetic Anomalies and Source Structures
11. SWS: 3D Forward Modelling of Magnetic Anomalies and Source Structures
12. SWS: Supervised Modelling and Interpretation of Ground Magnetic Survey Data
13. SWS: Applications of magnetic survey methods in Structural Geology and Mineral Eploration
14. SWS: Applications of magnetic survey methods in Archaeology and Engineering Geology


Lehrmittel:

Notebook-Pool, Tabellenkalkulation mit Excel


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