The geomagnetic observatory (GMO) consists of a 1km long tunnel system. The main axis is north-south oriented and the laboratory building is located at the south end. Tunnel excavation finished end of 2010. The GMO was offically opend on the 21st of May 2014.

 

 

 

 

 

 

 

 

 

 

Facilities

* overall 1km tunnel system
... consists of experiment tunnel, calibration tunnel, variometer tunnel, gradiometer tunnel, and absolute tunnel
... separated from the laboratory building by an air lock

* two boreholes
TB1a (100m),
TB2a (200m)

* Lab 1 - laboratory with workstations
* Lab 2 - measuring room / palaeomagnetic lab
* installations room


* seminar room
* kitchen
* room for batteries
* attic
* further utilities: storeroom with shower, bathroom und change room

 

Technical Support

* uninterruppted power supply (USV)
* water and gas supply

 

 

 

 

 

 

 

 

 

 

 

Equipment

Magnetic Laboratory Measurement Systems:

- Palaeomagnetic lab:
* AGICO JR6 Spinner Magnetometer
* Bartington Kappabridge MS2B Dual Frequency Sensor
* MMTD-DSC Super Cooled Thermal Demagnetizer

 

 

 

 

 

 

 

 

Variation Measurement Systems:

* 3-axis Fluxgate Magnetometer Model FGM-FGE:
variometer, fluxgate magnetometer,
3 linear core fluxgate sensors, sampling rate: 1Hz (filtered)

* LEMI-025 & LEMI-036
variometer, fluxgate magnetometer,
3-component measurement, sampling rate: 10Hz
(incl. two temperature sensors)

 

 

 

 

 

Absolute Measurement Systems:

* AUTODIF MKI
automated DIflux, absolute observations

* MinGeo Cableless FLUXSET Declinometer (DIM) /
non-magnetic Zeiss THEO 010/020 theodolite
declination/inclination magnetometer,
fluxgate sensor, radio link, absolute observations

* Barington Mag-01H Single Axis Fluxgate /
non-magnetisc WILD theodolite
declination/inclination magnetometer,
fluxgate sensor, absolute observations

 

 

Scalar Measurement Systems:

* GSM-90 Overhauser Magnetometer
scalar magnetometer, Overhauser magnetometer, sampling rate: 3Hz

* QML POS-1
scalar magnetometer, Overhauser magnetometer, sampling rate: 0.2Hz

* RMS G-823A
scalar magnetometer, Caesium magnetometer, sampling rate: 10Hz

 

 

* GSMP-20S3 Potassium SuperGradiometer
magnetic gradiometer, potassium sensors, sampling rate: 20Hz