Shallow Seismic Or Reflection /
Refraction Seismic Survey Services
What Is A Shallow Seismic Survey?
A shallow seismic survey, also known as a shallow refraction or reflection survey, is a type of seismic survey that is used to study the shallow subsurface, typically to a depth of about 100 meters or less. The goal of a shallow seismic survey is to create high-resolution images of the shallow subsurface to understand the geology and soil properties, as well as to detect potential subsurface hazards such as sinkholes, buried mines, and other potential hazards.
During a shallow seismic survey, a source of energy is introduced into the subsurface, such as a small explosive charge, a hammer, or a vibrator. Seismic waves generated by the energy source travel through the subsurface and are reflected and refracted by subsurface layers. The reflection and refraction of the waves are detected by sensors such as geophones or accelerometers which are placed on the surface, and the data is then used to create an image of the shallow subsurface.
What Is The Shallow Seismic Survey Used For?
Shallow Seismic Is Different From
Cross - Hole Seismic Survey
Shallow seismic surveys are typically used for shallow subsurface imaging, such as mapping the subsurface geology and identifying subsurface features in the shallow subsurface such as soil layers, shallow rock formations, and buried utilities.
In shallow seismic surveys, surface geophones or shallow boreholes record the seismic waves generated by surface sources such as dynamite or a vibroseis truck.
Shallow seismic surveys provide images of the shallow subsurface. Shallow seismic surveys are useful for mapping shallow subsurface geology, but they are less useful for identifying subsurface features at depth.