GeoTomographie BIS-SV

The borehole source BIS-SV generates vertically polarized shear waves (SV) in dry or water filled boreholes. The BIS-SV source needs to be used with the impulse generators IPG800 or IPG5000. The coupling to the borehole wall is ensured by a pneumatic clamping system (infatable bladder).

The source is designed for seismic crosshole applications. No special alignment of the source is required in the borehole. A switch box is provided to select one of the two SV shot directions „UP“ and „Down“ which improves the practicability of the S-wave source.

Generated wave types

SV

Signal frequencies:

Up to 500 Hz (depending on geology and borehole distance)

Operational depth:

Up to 200 m

Source length:

1015 mm

Source weight:

6 kg

Cable weight per metre:

377 g

Borehole diameter:

75 - 100 mm (or larger if spacers are used)

Clamping system:

Inflatable bladder

Depth indicator:

Cable marking every 2 m

Connector:

To Impulse Generator IPG5000

Storage:

on drum

Switch Box:

Switch between two vertical shot directions