Print this page
Figure 2. Example geometries of surface source and sondes (containing the geophone package). A survey should be planned with the travelpath of the seismic energy in mind. A far-offset VSP field setup such as a source at S2 and receiver at A would image the interface at the borehole if the position A was at the interface and up to half the offset distance along the interface if the geophone position A was at the surface.