Geophysical Methods

Measured parameters

Reflection / Vibroseis

  • Acoustic impedance contrasts (density and speed contrasts)

Refraction

  • Velocity of P-Waves

MASW

  • Velocity of S-Waves

Electrical methods

  • Resistivity

Electromagnetism

  • Conductivity

Magnetism

  • Magnetic susceptibility

Gravity

  • Density contrasts

Georadar

  • Dielectric permittivity contrasts

What is geophysics?

Applied geophysics is a field of Earth Sciences that uses quantitative methods derived from physics to identify buried geological or anthropological structures.

Results

Multimethod alignment chart exampleThe primary contribution of geophysics is its capacity to provide information on the distribution of given parameters in the ground (seismic velocity, electrical resistivity, etc).

Geophysical methods allow us to create precise geological models at an optimized cost through regionalization of borehole data.

Multi-method applications

Geological  interpretation of a site is constrained through the use of multiple and joint geophysical techniques.

The selected technique depends on the matter and structure to investigate.

This multi-method approach grants the optimization of borehole locations, therefore reducing costs.

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