Source-receiver offset ranges for P-SV seismic data
Donald C. Lawton
Modelling studies have shown that the ratio of incident angles for P-SV and P-P reflections is about 1.3 for a common receiver location. This means that for a given source-receiver offset, pre-critical P-P reflections may be recorded with post-critical PSV reflections. This has serious implications for the P-SV stack, which requires that the phase for all reflections in the gather be stationary if the integrity of the stack is to be maintained. Long source-receiver offsets for P-SV acquisition are therefore not recommended. This requires that a major effort in multicomponent surface seismic data acquisition must be directed at attenuating source-generated noise and extracting useable reflection signal in the mid-offset range.