Geophysical Survey: Karrat

Survey name DIGHEM V frequency-domain electromagnetic and airborne magnetic survey Karrat Project, northern West Greenland
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Platform Helicopter
Acquisition Period Between Nov 10, 1997 and Nov 13, 1997
Spatial reference Projection: UTM_22, Datum: WGS84, UTC offset: 0
Processing Company Geoterrex-Dighem
Client Company Platinova A/S
Initiating Organisation Geoterrex-Dighem

Survey Methods

Frequency domain EM
Equipment Dighem V
Description Towed bird, symmetric dipole configuration operated at a nominal survey altitude of 30 metres. Coil separation is 8 metres for 900Hz, 5500Hz and 7200Hz, and 6.3 metres for the 56,000 Hz coil-pair.
Magnetic
Equipment Geometries 0822 or Scintrex CS2 sensor
Description Optically pumped cesium vapour. The magnetometer sensor is housed in the EM bird, 30 m below the helicopter

Survey Reports

Final report Chung, L. E.: DighemV survey for Platinova A/S. Karrat project Greenland. Internal report, Platinova A/S. 45 pp., 5 appendices, 4 plates, 1 CD-ROM: Final Geosoft Archive, 1 Zip diskette: Final Geosoft Archive.. Report file No 21645

Survey Blocks

Block 1
Methods:
Flight:
Line spacing 200 m
Ground Clearance:
   Nominel 197ft
   Mean 123ft
   Min 46ft
   Max 909ft
   Std 66ft
Block 2
Methods:
Flight:
Line spacing 200 m
Ground Clearance:
   Nominel 197ft
   Mean 144ft
   Min 71ft
   Max 294ft
   Std 49ft