Canada - Grid Spacing: 2km - Gravity - Isostatic Residual
The Canadian Gravity Anomaly Data Base consists of approximately 660 000 gravity observations, including 165 000 on land, acquired between 1944 and the present. The data spacing ranges from less than 1 km to over 20 km, with an average spacing between 5 and 10 km. All measurements were reduced to the IGSN71 datum. Theoretical gravity values were calculated from the Geodetic Reference System 1967 (GRS67) gravity formula. Bouguer anomalies were calculated using a vertical gravity gradient of 0.3086 mGal·m-1 and a crustal density of 2 670 kg·m-3.
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Date Created
2010-09-10
Date Published
2010-09-10
Temporal Coverage
Present - Present
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3
All time access
358
Source(s) and Citation
Government of Canada; Natural Resources Canada;Lands and Minerals Sector / Geological Survey of Canada / Central. (2010-09-10). Canada - Grid Spacing: 2km - Gravity - Isostatic Residual.
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Related keywords
gravity surveys, gravity surveys, earth sciences, geophysics
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