The invention relates to a device for emitting seismic vibration waves mountable on a movable platform (100) comprising a vibration system for transmitting the waves into the ground and a system for supporting a device (200) on the ground, wherein the system for supporting on the ground is fixable to the movable platform (100) and transfers a charge to a ground-mounted vibration system in a ground support direction (1). Said ground-mounted vibration system is fixable to the system for supporting on the ground by compensation means (251, 252, 253) for compensating perpendicularity defects between the ground general plane and the around support direction (1). Said invention is characterised in that said compensation means comprises elongated elements which are exposed to tensile strength along the longitudinal axes thereof, respectively and rotatably mounted by each free end thereof around at least one axis of rotation which is substantially perpendicular to the ground support direction (1), wherein the axes of rotation of each elongated element are fixed to the vibration system and to the fixed part of the system for supporting on the ground.