Seismic vibrator

Vibroseis, also known as vibro- seismic, is a process of reflection seismology, in which displaced by most mobile devices, the earth's surface to vibrate and the reflected signal is received and evaluated by geophones.

The term originally comes from the Vibroseis U.S. company Continental Oil Company, which this method in 1954 was granted a patent for the exploration of oil deposits.

Other applications include the exploration of natural gas or of certain layers of rock for use by geothermal energy.

Vibroseis vehicles

Was it years ago still required for studies of this type, induced by means of an explosion, the energy required for measurable signals, often special vehicles are used today, with which the exploration can effectively and carried out in an urban environment.

These vibroseis vehicles have a high mass and are fitted in the vehicle center part with vibratory plates, most of which are operated hydraulically. To apply the vibrational energy the panels are extended downward to the earth's surface or road and lift the vehicle slightly to achieve a defined soil pressure.

The frequency of the vibrations that are discharged at the same time by a plurality of vehicles in general, is in the two to three digit Hertz range. The process takes in a populated area often only a few seconds to keep the load on the environment by noise and vibration, such as damage to the building (DIN 4150), as low as possible.