Gravity and aeromagnetic contains ground field reading of gravity strengths
and airborne surveys of magnetic strengths from across the province of
Ontario.
Beginning in 1947, systematic aeromagnetic surveys were conducted over the
whole of Ontario. The surveys were performed for the Geological Surveys of
Canada and the Ontario Department of Mines and completed in 1987. Also
beginning in 1947, ground gravity data were collected across Ontario by
Federal-Provincial programs and external initiatives.
Digital gravity data were provided by Geodetic Survey Division, Geomatics
Canada, Natural Resources Canada and Ontario Geological Survey.
Survey Parameters:
Line spacing: 800 m (half-mile)
Magnetic survey type: total field
Magnetometer height: 300 m (1000 ft)
Gravity survey: yes
No. of gravity stations: 55639
This data is best viewed using Google Earth or similar Keyhole Markup Language
(KML) compatible software. For instructions on how to use Google Earth, read
the Google Earth tutorial.
[ft]: feet
[KML]: Keyhole Markup Language
*[m]: metre
