Geoid Models
The Geographic Calculator supports a number of regional geoid models. These models are based on data tables containing differences between the ellipsoid and the geoid model for a given area. Please be aware that these models are not exact Mean Sea Level values, but are approximations of Mean Sea Level.
Each vertical model supported requires a distinct set of data tables which are freely available from our website:http://www.bluemarblegeo.com/products/geographic-calculator-download.php.
Supported vertical transformation types are
available for:
- US Geoid Model of 1996
- US Geoid Model of 1999
- US Geoid Model of 2003
- US Geoid Model of 2006 (Alaska)
- US Geoid Model of 2009
- US Geoid Model of 2012 A
- Canadian Geodetic Vertical Datum 2013
- Australian Geoid Model of 1998
- Ordnance Survey Geoid Model of 2002
- Earth Geopotential Model of 1996
- Colombia Geoid Model of 2004
- Japanese GSI Geoid Model of 2000
- Venezuelan Geoid Model of 2004
- Iberian Gravimetric Geoid of 2005
- Iberian Geoid Model of 1995
- Earth Geopotential Model of 2008
- Netherlands Geoid Model of 2004
- Ohio State University Geoid Model of 1991
- Trimble Geoid Grid
- VDatum Tidal
- Custom Geoids
All transformations show the default type of interpolation used for that method on the definition for that geoid. Newly created geoids will start with the default method selected.
For more information please see: