Keywords: Earth Gravitational Model 1996.png en F G Lemoine S C Kenyon J K Factor R G Trimmer N K Pavlis D S Chinn C M Cox S M Klosko S B Luthcke M H Torrence Y M Wang R G Williamson E C Pavlis R H Rapp and T R Olson NASA Goddard Space Flight Center Greenbelt Maryland 20771 USA July 1998 http //cddis nasa gov/926/egm96/egm96 html F G Lemoine S C Kenyon J K Factor R G Trimmer N K Pavlis D S Chinn C M Cox S M Klosko S B Luthcke M H Torrence Y M Wang R G Williamson E C Pavlis R H Rapp and T R Olson NASA Goddard Space Flight Center Greenbelt Maryland 20771 USA July 1998 1996 Free Geoid Geodesic maps Gradient maps 20th-century maps of the world Maps with Eckert IV projection Global maps centered Greenwich English language maps of Earth |