Seismic signal source

Seismic sound source

Seismic source

Seismic source

Seismic source for use under water

Seismic source for use underwater

Seismic source using self-propelled projectile

Seismic source with no reaction mass

Seismic transducer baseplate and housing assembly

Seismic transducer construction

Seismic vibration source

Seismic vibrator and method for improving the output of a seismi

Seismic vibrator baseplate

Seismic vibrator baseplate

Seismic vibrator control system

Seismic vibrator controlled by directly detecting base plate...

Seismic vibrator support assembly

Seismic wave generation by a downhole source

Seismic well source

Self-propelled percussion unit and method of using same