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Comment: Automatically updated by Registry2Confluence-Transporter (polarstern@ingestsrv1, ask o2a-support@awi.de for questions)

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Sensorweb integration
urnvessel:polarstern:gravimeter
contenttypeSummary

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.


Sensorweb integration
urnvessel:polarstern:gravimeter
contenttypeMetadata
ManufacturerBodensee Gravitymeter Geosystem GmbH (BGGS)
ModelKSS 32 M
Serial No.n/a
Typegravimeter
REGISTRY-Link↪ REGISTRY (1406)


Sensorweb integration
urnvessel:polarstern:gravimeter
contenttypeImages

Image Added Image Added Image Added Image Added

Contacts

Sensorweb integration
urnvessel:polarstern:gravimeter
contenttypeContacts
Name Institution Role
Thorsten EggersAlfred Wegener Institute, Helmholtz Centre for Polar and Marine ResearchEngineer In Charge
Alfred Wegener Institute for Polar and Marine ResearchAlfred Wegener Institute, Helmholtz Centre for Polar and Marine ResearchOwner
Graeme EaglesAlfred Wegener Institute, Helmholtz Centre for Polar and Marine ResearchPrincipal Investigator, Data Scientist


Components

Metadata (Metadata Plugin)
0Components
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
 Sensorweb integration
urnvessel:polarstern:gravimeter
contenttypeLocalFrame
Infoxyz-position from Alignment Survey Report RV Polarstern (June 2016), located in F632
X56.99 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) 
Y0.147 m
(Y-0 at centerline, positive Y-axis is portside)
Z11.81 m
(Z-0 is set to the lowest point of the keel, positive Z-axis is upwards) 

Data logging, storage and archiving
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 Sensorweb integration
urnvessel:polarstern:gravimeter
contenttypeParameters
 Parameter  O2ARegistry Output Type  Unit 
accelerationaccelerationm/s2
GravitygravitymGal

Central geographical ship's position and time standard
Time stamp from DShip NMEA telegram.
A gyro-stabilized platform accounts for compensation of the ship's movements. Navigation data from DShip NMEA telegram.
 Metadata (Metadata Plugin)
0timestandard
 Rawdata storage on board 
Data storage in DShip system.  backup to operator-laptop is possible.

 Metadata (Metadata Plugin)
Rawdata
0
Rawdata
Dship
 Metadata (Metadata Plugin)
0DShip
Uncorrected measurement data.

 Metadata list
|| Device name | gravimeter || 
|| Parameters | GRAVIMETER.PBGGGD.1.datafield3; GRAVIMETER.PBGGGD.1.datafield4; GRAVIMETER.PBGGGD.2.datafield1; GRAVIMETER.PBGGGD.2.datafield2; GRAVIMETER.PBGGGD.2.datafield3; GRAVIMETER.PBGGGD.2.datafield4 ||
Data archiving on land 
 Metadata (Metadata Plugin)
0DataOnLand
After the cruise the DShip data set can be extracted from https://dms.awi.de.

 Metadata list
|| File format(s) | stored in DShip system || 
|| Calibration certificates | stored in Gravitimeter Room F632 ||
Documentation
The manuals are located in the Gravitymeter Room on board.
 Sensorweb integration
urnvessel:polarstern:gravimeter
contenttypeResources