The first sexaxial figure of the Earth

Autor: H. Bâki İz
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: All Earth, Vol 35, Iss 1, Pp 183-194 (2023)
Druh dokumentu: article
ISSN: 27669645
2766-9645
DOI: 10.1080/27669645.2023.2227483
Popis: ABSTRACTIn this study, a sexaxial figure of the Earth was created using randomly distributed 6400 control points on the geoid, which was generated by the EGM2008 gravity model. The shape of the sexaxial ellipsoid is defined by its six orthogonal axes. To construct the new geometric figure, eight triaxial ellipsoids were fitted to the Cartesian coordinates of control points in each octant of the geoid using the least squares method. Its geometric origin is constrained to coincide with the centre of mass of the geoid, and the ellipsoid has no net rotation with respect to the WGS84 coordinate system. This study demonstrates that the new geometric figure provides a customised fit to the control points in each octant.
Databáze: Directory of Open Access Journals