Summary
Overhauser magnetometer are used for ground reference of the airborne measurements. They produce readings with a 0.01 nT to 0.02 nT standard deviation while sampling once per second.
aircraft:bt-67:gsm19 (7111)
| Manufacturer | GEM Systems |
|---|---|
| Model | GSM-19 |
| Serial No. | n/a |
| Type | magnetometer |
Contacts
| Name | Institution | Role |
|---|---|---|
| Graeme Eagles | Alfred-Wegener Institute of Polar and Marine Research | Device Contact |
Available devices and Specifications
| Name | Model | Serial Number |
|---|---|---|
| Overhauser Magnetometer GSM-19 | GSM-19 | 52498 |
| Overhauser Magnetometer GSM-19 | GSM-19 | 62673 |
Specifications of GEM Overhauser Magnetometer
Dimension Sensor (Diameter x L) |
75 x 175 mm |
|---|---|
Weight Sensor |
1.0 kg |
Dimension Console (L x W x H) |
223 x 240 x 69 mm |
Weight Sensor |
2.1 kg |
Data interface |
serial interface (RS-232) |
Position
| Info | The GSM-19 magnetometers are used as base stations continously running on the ground during airborne magnetic measurements. |
Data logging, storage and archiving
Logged parameter
| Parameter | Sensor Output Type | Unit |
|---|---|---|
| magnetic field | magnetic field | nT |
Rawdata storage on land
Overhauser magnetometer data are recorded for several days independantly and continously.
Data archiving on land
Base station data of the GEM Overhauser magnetometers are downloaded frequently and are made accessible via the external devices file system of the aircraft data managment system (DMS).