Canada - Grid Spacing: 2km - Airborne 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. 2010-09-10 2017-12-12 Natural Resources Canada infogdc@NRCan.gc.ca Form DescriptorsNature and EnvironmentScience and Technologygravity surveysgravity surveys; airborneEarth sciencesGeophysics Canadian Airborne Geophysical Database (CAGDB) English Web serviceWMS http://wms.agg.nrcan.gc.ca/wms2/wms2.aspx?service=wms&version=1.3.0&request=GetCapabilities&layers=77 Canadian Airborne Geophysical Database (CAGDB) English Web serviceWMS http://wms.agg.nrcan.gc.ca/wms2/wms2.aspx?service=wms&version=1.3.0&request=GetCapabilities&layers=77 Canada 2 km - GRAV - Free AirZIP http://gdr.agg.nrcan.gc.ca/gdrdap/dap/index-eng.php?db_project_no=10013

Canada - Grid Spacing: 2km - Airborne 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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Resources

Resource Name Resource Type Format Language Links
Canadian Airborne Geophysical Database (CAGDB) English Web service Web Service WMS English Access
Canadian Airborne Geophysical Database (CAGDB) English Web service Web Service WMS French Access
Canada 2 km - GRAV - Free Air Application ZIP English
French
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Geographic Information

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Contact Information

Delivery Point: Physical; 615; Booth Street; ; Room 235

City: Ottawa

Administrative Area: Ontario

Postal Code: K1A 0E9

Country: Canada

Electronic Mail Address: infogdc@NRCan.gc.ca