Canada - Grid Spacing: 2km - Gravity - Free Air

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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Champ Valeur
Dernière modification janvier 16, 2026, 20:58 (TU)
Créé le janvier 16, 2026, 20:58 (TU)
contains_pii oui
criticality_level Élevé
data_formats WMS; ZIP
fair_openness Level 2 - Machine-readable
geographic_scope Canada
sensitivity_level Faible
source_inventaire Inventaire_W
source_url https://open.canada.ca/data/en/dataset/87602d9b-b566-5881-9e79-249080af8be2
subject form_descriptors, nature_and_environment, science_and_technology
update_frequency unknown
year_most_recent 2021-06-21 17:21:23.674000
year_start 2017-05-23 16:05:08.680000