| description:
|
The Geoid 12B is used to convert the ellipsoidal height obtained by the Global Navigation Satellite System (to the orthometric height of a specific vertical datum. The Geoid 12B model transforms between NAD 83 (2011/PA11/MA11) and the respective vertical datums. Source: National Geodetic Survey (https://www.ngs.noaa.gov/GEOID/GEOID12/), April 2017. For additional information, please see metadata at https://files.hawaii.gov/dbedt/op/gis/data/geoid12B.pdf or contact Hawaii Statewide GIS Program, Office of Planning and Sustainable Development, State of Hawaii; PO Box 2359, Honolulu, Hi. 96804; (808) 587-2846; email: gis@hawaii.gov; Website: https://planning.hawaii.gov/gis. |