Attention:
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. Operations of the system require experienced scientific staff on board. The system is not operated by the ship's crew.
Summary
Marine seismic data acquisition is a technique to generate and record seismic waves in the subsurface. By determining location and shape of seismic reflections below the seafloor, a structural map of the subsurface can be created. For this
you need a source for the seismic signal (Airguns) and receivers for recording the reflected (Hydrophone Streamer) or refracted (Ocean Bottom Seismometer) signals.
you need a source for the seismic signal (Airguns) and receivers for recording the reflected (Hydrophone Streamer) or refracted (Ocean Bottom Seismometer) signals.
Contacts
| Role | Name |
|---|---|
| Engineer in Charge | Thorsten Eggers |
| Data Scientist | Wilfried Jokat |
Components
The Marine Seismic System consits of onboard data control and acquisition computers and tape drives for data storage, a Hydrophone Streamer (reflection seismic) or Ocean Bottom Seismometer (OBS; refraction seismic) and an airgun cluster (GI-guns or G-guns) as seismic source.
Subdevices
Data logging, storage and archiving
Logged parameters
Central geographical ship's position and time standard
Time synchronising via Polarstern Network.
Geographical ship's position via Polarstern Network.
Geographical ship's position via Polarstern Network.
Rawdata storage on board
Raw data is temporarily stored to the data acquisition unit and written on tapes on a regular basis.