GSNI Tellus Regional Airborne Geophysical Survey - Electromagnetic Grids

Data were processed using Geosoft Oasis Montaj and supplied in three formats.

  • Geosoft Grid
  • ESRI Geodatabase
  • ASCII Grid

Note that the presence of ‘Minc from V3 gdb, cellsize 35m’ in the grid filename indicates that the grid was generated using the Minimum Curvature interpolation method, from data contained within the Electromagnetics V3 database, using a cell size of 35m.

The following file are provided:

TELLUS_Electromagnetic (Minc from V3 gdb, cellsize 35m) 3KHz_Acon_FLT

3 kHz Apparent Conductivity generated using the Minimum Curvature interpolation method, from data contained within the 3KHz_Acon_FLT channel of the Electromagnetics V3 database, using a cell size of 35m.

TELLUS_Electromagnetic (Minc from V3 gdb, cellsize 35m) 3KHz_Acon_FLT_GRD_s

A sunshade of the 3 kHz Apparent Conductivity generated using the Minimum Curvature interpolation method, from data contained within the 3KHz_Acon_FLT channel of the Electromagnetics V3 database, using a cell size of 35m Shading parameters (inclination = 45 degrees, declination = 0 degrees).

TELLUS_Electromagnetic (Minc from V3 gdb, cellsize 35m) 14KHz_Acon_FLT

14 kHz Apparent Conductivity generated using the Minimum Curvature interpolation method, from data contained within the 14KHz_Acon_FLT channel of the Electromagnetics V3 database, using a cell size of 35m.

TELLUS_Electromagnetic (Minc from V3 gdb, cellsize 35m) 14KHz_Acon_FLT_GRD_s

A sunshade of the 14 kHz Apparent Conductivity generated using the Minimum Curvature interpolation method, from data contained within the 14KHz_Acon_FLT channel of the Electromagnetics V3 database, using a cell size of 35m Shading parameters (inclination = 45 degrees, declination = 0 degrees).

Data and Resources

Additional Info

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Creation Date November 19, 2018, 16:26 (UTC)
Topic Category
  • Geoscientific Information
  • Imagery / Base Maps / Earth Cover
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Electromagnetics Data were processed using Geosoft Oasis Montaj and supplied in three formats. Geosoft Grid ESRI Geodatabase ASCII Grid Please note that the presence of ‘Minc from V3 gdb, cellsize 35m’ in the grid filename indicates that the grid was generated using the Minimum Curvature interpolation method, from data contained within the Electromagnetics V3 database, using a cell size of 35m.
Frequency of Update Not Planned
Contact Name Alex Donald
Contact Email alex.donald@economy-ni.gov.uk
Additional Information

Information on survey, processing and data conditioning can be found in the following reports:

A Guide to the Tellus Data edited by Young, M.E. and Donald, A.W. can be downloaded at http://nora.nerc.ac.uk/id/eprint/509171/

Beamish, D.; Cuss, R.J.; Lahti, M.; Scheib, C.; Tartaras, E.. 2006 The Tellus airborne geophysical survey of Northern Ireland : final processing report. Nottingham, UK, British Geological Survey, 74pp. (IR/06/136) (Unpublished) http://nora.nerc.ac.uk/7427/

Lahti, M.; Beamish, D.; Cuss, R.J.; Williams, J.. 2007 Deculturing of the Northern Ireland Tellus magnetic data. Nottingham, UK, British Geological Survey, 51pp. (IR/07/047) (Unpublished) http://nora.nerc.ac.uk/7570/

Beamish, D.; Cuss, R.J.; Lahti, M.. 2006 The Tellus Airborne Geophysical Survey of Northern Ireland. Phase 1, logistics report. Nottingham, UK, British Geological Survey, 55pp. (IR/06/032) (Unpublished) http://nora.nerc.ac.uk/7184/
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