Priddis 2014 broadband surface and walkaway VSP seismic experiment

CREWES and INOVA conducted a high-resolution broadband multi-component seismic surface and borehole test survey at the Priddis Geophysical Observatory (PGO) in late October and early November of 2014. The PGO consists of buried targets and three geophysical test holes numbered 1, 2 and 4, all of which are less than 150 m in depth (Hall et al, 2014). Before beginning the 2014 seismic survey, natural gamma-ray logs and full waveform sonic logs were acquired in Testhole 2 using equipment described by Wong et al., 2009. Four dynamite source lines (E-W, NE-SW, N-S, NW-SE, 0.125 kg, 5 m deep, 6 m spacing) arranged in a star pattern centered on Testhole 1, and one Vibe source line (E-W, 6 m spacing) were recorded by permanent three-component 28 Hz geophones (3 m vertical spacing) in Testhole 1, clamping three-component optical sensors (20 m vertical spacing) in Testhole 2, as well as singlecomponent accelerometers (6 m spacing), single-component high-sensitivity 10 Hz geophones (6 m spacing), three-component 10 Hz geophones within ground-screws (6m spacing) and three-component 10 Hz geophones (3 m spacing) on the surface. The data are of generally good quality, but are contaminated with acoustic and electrical noise from generators powering various recording systems, as well as from regional power lines.