A surveying technique that sends a pulse of energy like a sound or explosion which is reflected back to a reciever.
The time it takes to pass through each material indicates what material was hit and can create an image of the subsurface.
A surveying technique that sends a pulse of energy like a sound or explosion which is reflected back to a reciever.
The time it takes to pass through each material indicates what material was hit and can create an image of the subsurface.