Geophysical Imaging 1

This module aims to provide the fundamentals of geophysical imaging of geological formations, from near the surface to the lithosphere scale. We will focus here on seismological methods (volume and surface wave tomography, receiver functions, ambient noise), gravimetry, and magnetotellurics. We will also present the fundamentals of reflection seismics (acquisition and processing). A case study conducted in a lab session will highlight the importance of combining these methods to best characterize the subsurface and its properties, particularly with regard to fluids.

• Understand the principles of seismic/seismological, gravimetric, and magnetotelluric geophysical methods
• Basics of signal processing
• Basics of direct and inverse problems
• Be able to interpret geophysical data in conjunction with a case study

• Properties of waves (amplitude, frequency, wavelength, speeds, reflection, and refraction, etc.)
• Ohm’s law, resistance, current, and voltage
• Newton’s first law, concepts related to the geoid and gravimetric anomalies

Continuous assessment.

• Understand the principles of geophysical methods:
- seismic/seismological
- gravimetric
- electrical and magnetotelluric
• Basic concepts of direct and inverse problems
• Be able to interpret geophysical data in conjunction with a case study