Airborne Survey Search Results
Survey ID DN09905


- General -
Geofile:NFLD/3058
Companies:Geological Survey of Newfoundland and Labrador
Contractor:Geo Data Solutions GDS Inc., Project P08041
Survey Area:Corner Brook, Nfld.
NTS Areas:12A/12; 12A/13; 12B/09; 12B/16; 12G/01; 12H/04; 12H/05

- Survey Logistics -
Survey Date:Nov. 22, 2008 to March 27, 2009
Survey Extent:22754.0 line km; 2465.0 km tie; 25219.0 km total
Altitude:Piper Navajo PA-31 (C-GKSA): 90 m
Line Spacing:200 m, Az: 130°; Ties: 2000 m, Az: 040°
Positioning:Differential GPS provided by 3 non-collinear Novatel L1/L2 DL-V3 GPS receivers on aircraft - to Novatel receiver at base; King KRA-10A radar altimeter; Honeywell PPT barometric altimeter; Panasonic WVCO484 colour video tracking camera
Instrumentation:Three Geometrics G822 split-beam cesium vapour magnetometers mounted at 14.8 m separation in aircraft wingtip pods (transverse gradient) and in a tail boom; RMS DAARC500 automatic aeromagnetic digital compensator; GEM Systems GSM-19 Overhauser base station mag
Data Recorded:Total field mag; longitudinal and transverse mag gradients
Comments:IGRF for year Jan. 21, 2009 and 500 m altitude removed from Total Field Mag data to yield residual; transverse and longitudinal gradients were determined from sensor differences.  Data processing is described in detail in the report.

- Digital Data -
Confidentiality Date:July 7, 2009
Grid Cell Size:40 m
Total Data Points:3379953
Projection of Data:NAD83, UTM Zone 21
Data Comments:The digital data have been released July 7, 2009.  The 1:50 000 scale PDF maps are also accessible via the Geological Survey Home Page. The images, linked below, were exported from Oasis Montaj at high resolution (10 m).
Links to Data:
Contractor logistics and processing report, PDF format (1.9 Mb zip'd)
Interpolated grids, Geosoft format, NAD83 (67.3 Mb zip'd)
Digital files and channel description, MS-Word format (16.9 Mb zip'd)
Profile archive, Geosoft database format (905 Mb zip'd)
Residual Magnetic Field Map, 12A/12 (PDF format, 4.6 Mb)
First Vertical Derivative of Magnetic Field Map, 12A/12 (PDF format, 5.6 Mb)
Residual Magnetic Field Map, 12A/13 (PDF format, 11.2 Mb)
First Vertical Derivative of Magnetic Field Map, 12A/13 (PDF format, 15.2 Mb)
Residual Magnetic Field Map, 12B/09 (PDF format, 4.2 Mb)
First Vertical Derivative of Magnetic Field Map, 12B/09 (PDF format, 5.2 Mb)
Residual Magnetic Field Map, 12B/16 (PDF format, 10.8 Mb)
First Vertical Derivative of Magnetic Field Map, 12B/16 (PDF format, 14.8 Mb)
Residual Magnetic Field Map, 12G/01 (PDF format, 8.6 Mb)
First Vertical Derivative of Magnetic Field Map, 12G/01 (PDF format, 10.8 Mb)
Residual Magnetic Field Map, 12H/04 (PDF format, 8.0 Mb)
First Vertical Derivative of Magnetic Field Map, 12H/04 (PDF format, 11.6 Mb)
Residual Magnetic Field Map, 12H/05 (PDF format, 11.3 Mb)
First Vertical Derivative of Magnetic Field Map, 12H/05 (PDF format, 14.8 Mb)
GIS Layers:
Survey flight paths (NAD27, UTM Zone 21N, 0.4 Mb zip'd)
Colour, shaded relief image, Total Magnetic Intensity (NAD27, 14.2 Mb zip'd)
Colour, shaded relief image, Residual Magnetic Intensity (NAD27, 16.0 Mb zip'd)
Colour, shaded relief image, First Vert. Derivative of Mag (NAD27, 26.3 Mb zip'd)
Colour, shaded relief image, Second Vert. Derivative of Mag (NAD27, 44.2 Mb zip'd)
Colour, shaded relief image, Horizontal Gradient of Mag (NAD27, 29.1 Mb zip'd)
Colour, shaded relief image, Longitudinal Gradient of Mag (NAD27, 29.7 Mb zip'd)
Colour, shaded relief image, Digital Terrain Model (NAD27, 36.2 Mb zip'd)
Colour, shaded relief image, Total Magnetic Intensity (NAD83, 14.3 Mb zip'd)
Colour, shaded relief image, Residual Magnetic Intensity (NAD83, 16.1 Mb zip'd)
Colour, shaded relief image, First Vert. Derivative of Mag (NAD83, 26.5 Mb zip'd)
Colour, shaded relief image, Second Vert. Derivative of Mag (NAD83, 47.3 Mb zip'd)
Colour, shaded relief image, Horizontal Gradient of Mag (NAD83, 29.2 Mb zip'd)
Colour, shaded relief image, Longitudinal Gradient of Mag (NAD83, 30.0 Mb zip'd)
Colour, shaded relief image, Digital Terrain Model (NAD83, 36.3 Mb zip'd)