SEISMIC REFLECTION PROSPECTING
Instrumentation for geognostic investigation
The seismic exploration of reflection type, which is extensively used in oil explorations, is also used nowadays to obtain detailed information on surface soils.
Due to the high resolution of the survey, it is used to define the development of geological structures in the sub-soil, defining the shapes, sizes and positions.
The prospecting is carried out by placing high frequency geophones in line and close to each other, sending seismic pulses through energy (also at high frequency) and by measuring the travelling times of the waves that, once penetrated in the ground, are reflected by the uneven surfaces that delimit the lithological passages with net impedance contrast.