Canada - Grid Spacing: 2km - Gravity - 1st Vertical Derivative

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.

Data and Resources

Additional Info

Field	Value
Source
Version	None
Author	None
Author Email	None
Maintainer	None
Maintainer Email	None
Data Level
Agreement Required
Purpose Constraints
Redistribution Allowed
AI Training Allowed
Data Steward
Title (French)	Canada - Espacement de la grille: 2km - Données gravimétriques - Dérivée 1ère verticale
Update Frequency	unknown
Geographic Scope	[]
Criticality Level	[]
Sensitivity Level	unrestricted
Language
Contact Person	{"fr": "Gouvernement du Canada; Ressources naturelles Canada; Secteur des sciences de la Terre, Direction du Centre et du Nord du Canada - Commission géologique du Canada,mathieu.ouellet@canada.ca", "en": "Government of Canada; Natural Resources Canada; Earth Sciences Sector,1-613-992-6408,mathieu.ouellet@canada.ca"}
Contact Email	infogdc@NRCan.gc.ca
Data Dictionary	EPSG:3978,http://www.epsg-registry.org,8.7.4
Open Canada Date Published	2010-09-10 00:00:00
Open Canada Date Modified
Open Canada Subject	["form_descriptors", "nature_and_environment", "science_and_technology"]
Open Canada Keywords	{"fr": ["levés gravimétriques", "levés gravimétriques aériens", "Sciences de la terre", "Géophysique"], "en": ["gravity surveys", "Earth sciences", "Geophysics"]}
Open Canada Collection	fgp
Principal Organization
Reference Data
Official Source