Knowledge in the Field
Seismic surveys are useful in engineering investigations to map the top of bedrock and determine overburden or rock rippability by measuring the in-situ seismic velocity. In general, seismic reflection surveys can detect targets at least 20 m deep while refraction surveys can image targets at shallower depths.
Aurora Geosciences are specialists in running efficient, small survey programs in areas where access and logistical support are difficult.
We use a Geometrics Strataview 48 channel seismograph for geotechnical and environmental surveys, employing explosives, shotgun or hammer sources depending upon the environment. Data processing is performed with Rimrock Geophysics SIP package (refraction surveys) and with SIS Vista (reflection surveys).