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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
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Manufacturer: LMF
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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. |
Contacts
| Role | Name |
|---|---|
| Engineer in Charge | Thorsten Eggers |
| Data Scientist | Wilfried JokatKarsten Gohl |
Components
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The Marine Seismic System consits of an airgun cluster (4 Airguns, GI-guns or G-guns) connected via pressure pipes to the compressor container, the hydrophone streamer and onboard data control and acquisition screens and computers including tape drives for data storage. 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. Parts of airgun deployment rail are stored in container WCAU351219-7. |
Subdevices
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Data logging, storage and archiving
Logged parameters
Central geographical ship's position and time standard
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??? Time synchronising ??? | ||
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??? geographical via Polarstern Network. Geographical ship's position ??? via Polarstern Network. |
Rawdata storage on board
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Raw data is temporarily stored to the data acquisition unit and written on tape tapes and backup tapes on a regular basis. |
Dship
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No data transfer to DShip. |
Data archiving on land
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After the cruise, the operator transfers the raw measurement data along with required meta data to AWI after consultaion with the data scientist and AWI Logistics. Then, the data including meta data can be extracted from https://www.pangaea.de/ (for authorized users only) for further processing. |
| Metadata list |
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|| File format(s) | ??? ||
|| Calibration certificates | ??? || |
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