Attention:
Please note that the Marine Gravitymeter System can only be operated upon request. Request operations with the Marine Gravitymeter System to AWI-Logistics in sufficient time prior to the cruise.
Summary
A gravimeter is used to measure accelerations due to the gravitational field of the earth. The gravimeter on board of Polarstern is situated on a gyro-stabilized platform to compensate for the ship's movement. It is a spring and mass system with magnetic compensation, the extension of the spring being proportional to the gravitational force.
| Manufacturer | Bodensee Gravitymeter Geosystem GmbH (BGGS) |
|---|---|
| Model | KSS 32 M |
| Serial No. | n/a |
| Type | gravimeter |
| REGISTRY-Link | ↪ REGISTRY (1406) |
Contacts
| Name | Institution | Role |
|---|---|---|
| Thorsten Eggers | Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research | Engineer In Charge |
| Alfred Wegener Institute for Polar and Marine Research | Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research | Owner |
| Graeme Eagles | Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research | Principal Investigator, Data Scientist |
Components
Position
| Info | xyz-position from Alignment Survey Report RV Polarstern (June 2016), located in F632 |
| X | 56.99 m (X-0 is at the center of der rudder (ref. design drawing of the vessel), positive X-axis is forward and along vessel centerline) |
| Y | 0.147 m (Y-0 at centerline, positive Y-axis is portside) |
| Z | 11.81 m (Z-0 is set to the lowest point of the keel, positive Z-axis is upwards) |
Data logging, storage and archiving
Logged parameters
| Parameter | O2ARegistry Output Type | Unit |
|---|---|---|
| acceleration | acceleration | m/s2 |
| Gravity | gravity | mGal |
Central geographical ship's position and time standard
Rawdata storage on board
Dship
Data archiving on land
Documentation
The manuals are located in the Gravitymeter Room on board.
