Patent ID: 8913465

Claim:
A seismic vibrator, comprising: a baseplate having a resonant frequency and comprising: a core body at least partially composed of a composite material; a bottom plate coupled to a bottom surface of the core body; and a top plate coupled to a top surface of the core body; a reaction mass movably disposed relative to the baseplate and configured for imparting vibrational energy thereto; an actuator coupled to the reaction mass and configured for moving the reaction mass relative to the baseplate for imparting the vibrational energy thereto; and a controller communicatively coupled to the actuator and configured to generate a drive signal for controlling operation of the actuator, wherein the baseplate vibrates at a desired amplitude and frequency to generate a seismic source signal for transmission through a ground surface; wherein the composite material is selected with stiffness and density such that the resonant frequency of the baseplate is higher than the desired frequency at which the baseplate vibrates when generating the seismic source signals.