SEISMIC MEASUREMENT PROCEDURES – THE METHODOLOGY
Seismic measurement systems are used in many different areas, - for example in research, natural resource exploration or subsurface exploration.
The basic principle of a seismic measurement is always similar: During a seismic subsurface investigation, vibrations are generated at the surface with the help of seismic sources. These vibrations propagate in the subsurface at a material-dependent velocity and are reflected and refracted by the individual geological layer boundaries. With the help of geophones placed on the surface, the travel times and amplitudes of the individual waves are measured and displayed in a seismogram. Based on the data obtained in this way, an image of the subsurface can now be generated.
For each seismic measurement, the method used must be adapted to the individual target of the investigation. This includes the choice to apply refraction and/ or reflection seismic measurements and further choosing the dimensions of the seismic profiles, including source and receiver positions.