SBS42 – the Borehole Source


The borehole source SBS42 generates compressional waves (P) in water filled boreholes. The seismic signals are highly repeatable. Energy released by the IPG5000 discharges through a coaxial cable terminated by two adjacent spark electrodes. The spark discharge vaporizes water by a high-pressure plasma. This generates vapour bubbles which expand and collapse, thereby generating high-frequency seismic waves.


Technical Details

Generated wave types: P
Signal frequencies: Up to 5 kHz (depending on geology and borehole distance)
Operational depth: Up to 400 m
Source length: 645 mm
Source diameter: 45 mm
Source weight: 3.8 kg
Cable weight per metre: 206 g
Cable strength: 3400 N
Borehole diameter: Min. 50 mm
Clamping system: Not required
Depth indicator: Cable marking every 2 m
Connector: To Impulse Generator IPG5000
Storage: On drum




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