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 the gravitational field of the earth. The gravimeter on board of Polarstern is situated on a gyro-stabilized platform to compensate for the ships movement. It is a spring and mass system with magnetic compensation, the length of the spring being proportional to the gravitation.
Manufacturer | Bodensee Gravitymeter Geosystem GmbH (BGGS) |
---|---|
Model | KSS 32 M |
Serial No. | n/a |
Type | gravimeter |
Contacts
Name | Institution | Role |
---|---|---|
Graeme Eagles | Alfred-Wegener Institute of Polar and Marine Research | Principal Investigator |
Graeme Eagles | Alfred-Wegener Institute of Polar and Marine Research | Data Scientist |
Thorsten Eggers | Alfred-Wegener-Institute for Polar and Marine Research | Engineer In Charge |
Alfred Wegener Institute for Polar and Marine Research | Alfred Wegener Institute, Helmholz Centre for Polar and Marine Research | Owner |
polarstern dship | Alfred-Wegener-Institute | dship connector |
Components
The Marine Gravitymeter System consits of the Gravitymeter KSS 32-M and the operator-laptop in the Gravitymeter Room on board. The Gravitymeter control system and data acquisition software BGGS DACQS is installed on the laptop.
Position
Origin Description: | 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 | Sensor Output Type | Unit |
---|---|---|
acceleration | acceleration | m/s^2 |
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.