Sumários
Gravimetry
20 Março 2023, 08:00 • Stéphanie Dumont
Presentation of the gravimetry. Definition of density, gravitational force, gravitational field for the Earth with introduction to geoid and ellipsoid of reference. Other points adressed: Time variations of the gravitational field due to lunisolar tidal effect, absolute and relative measurements of gravity field, corrections to apply for obtaining anomalies and possible transformations to facilitate data interpretation.
Electromagnetic-methods
13 Março 2023, 10:00 • Stéphanie Dumont
Presentation of the electro-magnetic methods used in geophysical prospection. Definition of dielectric constants. Introduction to equation of EM waves to highlight the sensitivity of the methods to propagating/diffusive phenomena and to their behavior when propagating into different media. Principle of ground-penetrating radar, magneto-tellurics and time/frequency-domain EM methods.
Electromagnetic-methods
13 Março 2023, 08:00 • Stéphanie Dumont
Presentation of the electro-magnetic methods used in geophysical prospection. Definition of dielectric constants. Introduction to equation of EM waves to highlight the sensitivity of the methods to propagating/diffusive phenomena and to their behavior when propagating into different media. Principle of ground-penetrating radar, magneto-tellurics and time/frequency-domain EM methods.
Magnetic prospection
6 Março 2023, 10:00 • Stéphanie Dumont
Presentation of the magnetic methods used in prospection. Definition of the magnetic pemeability and susceptibility, their variations and sources, and the physics laws used in magnetostatic. Presentation of the magnetic field, its temporal and spatial variations and the instruments used to measure it. Notion of anomaly for prospecion applications, their sources and main steps of data processing.
Magnetic prospection
6 Março 2023, 08:00 • Stéphanie Dumont
Presentation of the magnetic methods used in prospection. Definition of the magnetic pemeability and susceptibility, their variations and sources, and the physics laws used in magnetostatic. Presentation of the magnetic field, its temporal and spatial variations and the instruments used to measure it. Notion of anomaly for prospecion applications, their sources and main steps of data processing.