There are three sorts of normal geophones: upward, even and multi-segment. Furthermore, these can have various frequencies. Ordinarily, we utilize vertical geophones for refraction and surface wave studies and level geophones for reflection and multi-part for a few high level investigations of the ground development. Note that for review in water we can utilize sensors that distinguish pressure changes as opposed to vibrations.The decision of geophone recurrence will rely on the sort of seismic examination being attempted and the application. Surface wave techniques should utilize low recurrence geophones under 5 Hz, while refraction commonly utilizes 10-28 Hz geophones and reflection studies will regularly utilize 10-40 Hz geophones. High recurrence evaluations on the seismic geophones give more noteworthy goal yet limit the profundity or distance that the seismic energy will be distinguished. Geophones have a resounding recurrence this is the recurrence of vibration at which they like to waver and hence give the greatest reaction. Low recurrence geophones are great at distinguishing low recurrence vibrations and these are the one which travel profound and far. A higher recurrence geophone will answer best to quicker motions which are the ones which make more detail. For ground vibrations at frequencies either side of the reverberation rating, a geophone will record those over the rating better compared to those beneath thus, if all else fails, it is smarter to utilize a geophone with too low recurrence than excessively high.