Patent ID: 7104357

Claim:
A method of prospecting a material medium comprising: forming seismograms of a formation to be explored of the material medium from elastic waves emitted by an emission source in a frequency range where wavelengths of the elastic waves relate to dimensions of the source, wherein the source of the elastic waves is a device comprising at least one vibrator for burying in the material medium, including each a single inertia mass being connected by at least one pair of electromechanical transducers to at least one pair of plates mechanically coupled with the material medium, the two plates of each pair being arranged on either side of the single inertia mass and having a common spatial orientation, and the two electromechanical transducers of each pair being arranged in line along the axis, and a control system for applying control signals to the electromechanical transducers; and wherein a resulting wavefield is directly generated by applying to one of the electromechanical transducers a vibrational signal equal to a sum of a first vibrational signal U F (f) and of a second vibrational signal U D t, and by applying to another electromechanical transducer a second combined control signal obtained by summing of a signal −U F (t) and the signal U D (t) so as to neutralize radiation of a plate associated with another electromechanical transducer.