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Introduction to applied geophysics

Class at Faculty of Science |
MG452P11

Syllabus

Lecture:

Relation between the applied geophysics and the others natural sciences, its history and branches. Physical properties of the rocks.

Gravimetric methods: Rock densities, gravity field of the Earth, gravimeters, interpretation of gravimetric anomalies. The application of gravimetric methods.

Magnetometric methods: Earth's magnetic field, magnetic susceptibility and induced magnetization, natural remanent magnetization, palaeomagnetic investigations, interpretation of magnetic anomalies. Examples of magnetometric methods' using.

Geoelectrical methods: Electric properties of rocks, principle of D.C. methods, electrochemical and electromagnetic methods, magnetotelluric methods. The application of geoelectrical methods.

Radiometric methods and methods of nuclear geophysics: Nuclear radiation, the law of radioactive decay, radioactivity units, gamma-ray method, gamma-ray spektrometry, emanometry, the gamma-gamma method, the X-ray fluorescence method, the neutron-neutron method. The application of radiometric methods.

Seismic methods: Principles of the elastic waves theory, the law of Snell, the law of superposition, principles of Huyghens-Fresnel and Fermat, reflection method, refraction method. The application of seismic methods.

Geophysical well logging: Borehole effect on the measured parameters, logging equipment, electrical logging methods, nuclear logging methods, methods applied to the determination of geometric parameters of well, temperature logging, photometry. The application of logging methods.

Use of geophysical methods.

Exercise: Typical tasks of the data processing and results' interpretation in selected geophysical methods. Qualitative and quantitative interpretation of geophysical data. Geophysical survey - strategy, complexity, stages and efficiency. "Miniproject" of geophysical survey within the frame of solving selected geological (hydro-geological, environmental, archaeological?) problem.

Annotation

Relation between the applied geophysics and the other natural sciences, its history and branches. Physical properties of the rocks.

Gravity, magnetic, geoelectrical and seismic methods, radiometric methods and methods of nuclear geophysics, geophysical well logging - physical principles, particular methods, interpretation processes, forward and inverse problems, geophysical maps. Applications of geophysical methods to solving problems in geology, hydrogeology, engineering geology, archaeology and environmental geology.