Seismic Refraction, ERT, MASW to Locate Depth to Bedrock, Papua New Guinea (Q4 2012).

  • A boat was used to lay out the hyrdophones and position the airgun shots.
  • The airgun being set for a shot.
  • The airgun being set for a shot.
  • The airgun being set for a shot.
  • The airgun being set for a shot.
  • The airgun being set for a shot.
  • The airgun being set for a shot.
  • The airgun being set for a shot.

GBG Australia undertook a Non-Destructive investigation to locate the depth to bedrock, Papua New Guniea (PNG). The purpose for the survey was to supply accurate information for furture development on the site. Seismic Refraction was performed using a hammer as the source with the geophones being placed at 2 meter seperations. The MASW was performed using 4.5Hz geophones set at 2 meter seperations and utilising 6 meter movements of the array for high quality data. The Electrical Resistvity Tomography was performed using the Syscal Pro 72 Switch with the electrodes being spaced at 5 meter intervals.

Figure 1: A boat was used to ferry equipment and personel to the site each day.

Figure 2: Heavy trucks were used to get from the shore to sites further inland.

Figure 3: Collecting a Seismic Refraction line on the beach.

Figure 4: Collecting a MASW line along a jungle path

Figure 5: Collecting a ERT line through the jungle

Figure 6: Some local shelter provided for the equipment

Figure 7: A waterfall near one of the sites

Figure 8: A sunset over the survey area