Electrical resistivity model resulting from the processing of AMT data.
Example of geophysical evidence from a borehole with lithological interpretation based on measurements of natural gamma radiation, P-wave velocity and electrical conductivity of the formation. Temperature and fluid conductivity logs with temperature gradient are included.
Example of natural gamma radiation records in drillings in the same area. The correlation between natural gamma radiation maxima helps define reference stratigraphic levels.
Example of measurement and control of vibrations produced by a blasting operation.
Left: time record of the three components of the ground movement (blue: longitudinal, green: vertical, red: transverse).
Right: comparison between the speed peaks and the UNE 22381 prevention criterion.
Vibration measurement equipment installed during blasting control.
Seismic data acquisition scheme and the main types of waves according to their propagation characteristics.
Example of the record of seismic waves produced by a seismic source and detected by a group of 48 sensors. Three sectors are marked with the arrivals of the three types of waves (refracted, reflected and surface) differentiated by the arrival pattern. Each of these types is the basis of one of the seismic techniques applied to the ICGC.