Directory Contains Magnetic and Radiometric data from the Drangedal area, Telemark county.

NGU Report 2014.044 describes acquisition, quality, processing and presentation of the data.

Magnetic data are presented as:
	Total magnetic field (Drangedal_miclev_mag)
	Magnetic Horizontal Gradient (Drangedal_HG_miclev_mag)
  	Magnetic Vertical Gradient (Drangedal_VG_miclev_mag)
	Magnetic Tilt Derivative (Drangedal_TI_miclev_mag)
  A 5x5 convolution filter was applied to smooth the resulted magnetic grids (See in folder Conv_5x5)
  
Geosoft XYZ-file with magnetic anomaly, IGRF value, instrument height and altitude above sea level.
  	Drangedal_Magnetics.XYZ
  	
Radiometric data are presented as:
	Radiometric Ternary Map  (Drangedal_Ternary_Normal_dist)
	Radiometric Total Count (Drangedal_miclev_TC_C)
	Potassium ground concentration in % (Drangedal_miclev_K_C)
	Uranium ground concentaration in ppm (Drangedal_miclev_U_C)
	Thorium ground concentration in ppm (Drangedal_miclev_Th_C)
  A 3x3 convolution filter was applied to smooth the concentration grids (See in folder Conv_3x3)  
  
Geosoft XYZ-file of Unanium, Thorium and potassium ground concentrations.
  	Drangedal_Radiometrics.XYZ
  	
  
For more information, contact: jan.ronning@ngu.no