Applied geophysics
Course information
Title of the course:
Applied geophysics
Responsible for teaching:
Other teachers:
Dr. Tamás Francsik
Type of the course:
Professional course
Description
Prerequisites:
Geophysics, The inner processes of the Earth
Brief description of the lecture:
1. Surface geophysical methods I: gravity, magnetic and electrical methods.
a. The theory of gravitational measurements, corrections, the concept of the Bouguer-anomaly and editing Bouguer-anomaly maps. Petrophysical background, the questions of interpretation, modelling, inversion, defining geological models.
b. The theory of magnetic measurements, corrections, vertical and total space maps. Petrophysical background, modelling, inversion, geological interpretation.
c. About the theory of electrical (direct current and alternating current) measurements. The electrical characteristics of rocks, the development and interpretation of anomalies. Inversion, creating geological models.
2. Surface geophysical methods II: seismology, seismic tomography
a. The theoretical questions of the flexible wave propagation. The basics of petrophysics.
b. The theoretical overview of seismic tomography.
c. The overview of reflexion and refraction research methods: measuring, processing interpreting. Refraction tomography.
d. Hole seismic methods: VSP and cross hole tomography.
3. The geophysical methods of well-logging
a. electric logging
b. nuclear logging
c. acoustic logging
4. The petrophysical basics of geophysical image formation, geological-geophysical model, case studies.
a. The relations between the physical parameters of the rocks, the petrophysical models, the resolution of the
different methods.
b. The relations between geological data and deep logging-geophysical data: geological-geophysical model.
c. Connecting the surface geophysical and deep-logging -geophysical methods, the spatial dissemination of the data and setting the geological model of the territories where measures were taken. Case studies.
Practical Course:
1. Interpreting gravity and magnetic measurements, evaluating electric measurements, setting a geological model.
2. The presentation of the seismic method (field presentation). The interpretation of seismic profiles and the construction of the geological model.
3. Analysing the measurements of the geophysical well-loggings, indicating the aquifers, discovering the geological environment.
4. The usage of complex geophysical methodology (gravity, magnetic and seismic) to set the geological model of a territory. The potentials and limits of geological cognition.
Recommended reading:
- Gálfi, J., Márton, P., Meskó, A., Stegena, L. (1967): Geofizikai kutatási módszerek I-III. Tankönyvkiadó, Budapest.
- Horváth, F. (1977): A szilárd Föld fizikája. ELTE egyetemi jegyzet, Tankönyvkiadó, Budapest.
- Kiss, K., Meskó, A. (1980): Alkalmazott geofizika. ELTE egyetemi jegyzet, Tankönyvkiadó, Budapest.
- Márton, P. (1969): Általános geofizika. ELTE egyetemi jegyzet, Tankönyvkiadó, Budapest.
- Meskó A.: Rugalmas hullámok a Földben. Akadémiai Kiadó, Budapest.
- Meskó A.: Bevezetés a geofizikába. Tankönyvkiadó, Budapest
