Seismic Reflection

There are two types of seismic surveys we have run for decades – refraction and reflection. Both types of seismic surveys work by measuring the travel time of energy from a surficial shot (usually an explosive in the case of refraction, and a hammer hitting a plate in reflection) to an array of ground motion sensors, or geophones. The shot sends a wavefront of energy that is refracted/reflected by the mesh point of subsurface layers, such as overburden and bedrock.