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Airguns Cluster Refraction Seismic is part of the Marine Seismic Equipment.

Please note that operations with the Seismic Equipment can only be operated upon request. Request operations with the Seismic Equipoment to AWI Geophysics and AWI-Logistics in sufficient time prior to the cruise. The operations of the system require experienced scientific staff on board.

In the seismic refraction method, seismic waves are recorded that propagate along layer boundaries or as arcuate "diving waves" mainly sub-horizontally. The seismic signals, produced by controlled seismic sources, are recorded along lines of seismometers deployed on land or in the ocean (ocean-bottom seismometers). Although this method can also be used in engineering geology for near-surface investigations, we apply it to analyze deep crustal structures, the crust-mantle boundary and the uppermost mantle.

Airguns have different chamber sizes, which are chosen in relation to the objectives, i.e. target size and depth. The Refraction Seismic Airguns Cluster consits of usually 4 G-guns with a volume of 8.32 l each, cluster bars as distance pieces and mounting gear. Ocean Bottom Seismometers (OBS) are needed to conduct Refraction Seismic measurements. OBS pool: Henning.Kock@awi.de (Engineer in Charge) or Mechita.Schmidt-Aursch@awi.de (Data Scientist).

• Sercel Airguns Brochure (Factsheet, 5 MB)