Directory Identifier: GRAVCD-canada10
Directory Title: The Canadian Gravity Geoid
Principal Investigator: Peter Vanicek 
Contributing Organization: Department of Surveying Engineering
                           University of New Brunswick
                           P.O. Box 4400
                           Fredericton, N.B.
                           Canada E3B 5A3

Summary: A detailed gravimetric geoid has been computed on a 10' 
by 10' grid for Canada by the University of New Brunswick.  This 
data base was received in April 1989.  Principal gravity 
parameters include latitude, east longitude, and total geoidial 
height above GRS'80 reference ellipsoid.  The gravity data used 
for the spheroidal Stokes's integration consisted of point 
gravity anomalies for the innermost zone, of 5'x5' mean gravity 
anomalies for the inner zone, and 1x1 degree mean gravity 
anomalies for the outer zone.  The gravity values are based on 
the International Gravity Standardization Net 1971 (IGSN71) and 
the reference ellipsoid 1980 (GRS80).  For detailed documentation 
see Technical Report No. 129.