GSNI Tellus Regional Airborne Geophysical Survey - Magnetics

This dataset presents the results of the Tellus Magnetic data as xyz data. Channels in the dataset are: X: Grid Easting Y: Grid northing LAT: WGS84 latitude in decimal degrees LONG: WGS84 longitude in decimal degrees FID: numerical sum of Julian day and seconds past previous midnight Area: Tellus survey area Flight: Flight number DATE: Date (YYYYMMDD) Day: Day number (Julian) Time: Time (HHMMSS.SS) DIR: Flight direction (degrees clockwise) RALT: Radar altitude (m) GPS_H: GPS altitude (m) above geoid (WGS84) DTM: Digital Terrain Model (m) MAG_MID: Total magnetic Intensity for aircraft mid-point (nT) BASE: Magnetic basestation correction (nT) GRAD_PERP: Gradient perpendicular to aircraft (nT/m) MAG_ML: Equivilent to MAG_MID microlevelled (nT) MAG_IGRF: IGRF field (nT) MAG_RES: Magnetic anomaly (IGRF corrected MAG_ML) (nT)

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Field	Value
Creation Date	June 3, 2016, 13:35 (UTC)
Topic Category	Environment Geoscientific Information Imagery / Base Maps / Earth Cover Location
Lineage	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 (IR/06/136) (Unpublished) http://nora.nerc.ac.uk/7427/ Lahti, M.; Beamish, D.; Cuss, R.J.; Williams, J.. 2007 Deculturing of the Northern Ireland Tellus magnetic data.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 (IR/07/047) (Unpublished) http://nora.nerc.ac.uk/7570/ Beamish, D.; Cuss, R.J.; Lahti, M.. 2006 The Tellus Airborne Geophysical Survey of Northern Ireland.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 (IR/06/032) (Unpublished) http://nora.nerc.ac.uk/7184/
Frequency of Update	Irregular
Contact Name	Alex Donald
Contact Email	gsni@economy-ni.gov.uk
Additional Information	An airborne geophysical survey of the whole of Northern Ireland was flown by the Geological Survey of Northern Ireland in 2005 and 2006 as part of the Tellus project funded by the Department of Enterprise, Trade and Investment of Northern Ireland and by the Rural Development Programme through the Northern Ireland Programme for Building Sustainable Prosperity. Magnetic, electromagnetic and radiometric data were acquired at 200 m line spacing and a flying height of 56 m (240 m over built-up areas) using the Joint Airborne Capability of the British Geological Survey and the Geological Survey of Finland. In total, 82,000 line-km of data were acquired. Spatial reference system code: 29902
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