Geophysical exploration of volcanic systems
Description including Unit Aims
The methods of Applied Geophysics (their classification and applications): airborne and ground magnetic, electromagnetic and gravity surveys, satellite remote sensing, GPS network, and resistivity and seismic surveys. Procedures and techniques of prospections and organization of a geophysical survey in volcanic areas. Potential field methods (gravimetric and magnetometric). Electrical methods (direct current resistivity, induced polarization). Electromagnetic methods (with controlled source FD). Seismic methods (refraction and reflection). Other methods and integration of geophysical methods. Hints on processing, filtering, and single and joint inversion of geophysical data. Critical geophysical targets include the inner volcanic structure, the identification of shallow reservoir systems, changes in active hydrothermal systems, the deep thermal deformation sources and the temporal evolution of the volcanic system.
Intended Learning Outcomes
The course aims at yielding adequate knowledge of the geophysical methods of investigation of the volcanic systems, of the theory and experiments of geophysical prospecting, as well as of data processing and interpretation techniques. The student will be prepared to tackle advanced studies critically and independently on the subject, as well as to develop simple feasibility projects for the geophysical survey, clearly formulating the scope, the hypotheses, the techniques, describing the various phases of the data processing and verifying the consistency and reliability of the interpretative results.
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