The Earth's volume exceeds that of the oblate spheroid due to the land volume above sea level, which is estimated to be \(3.755 \times 10^{7} \mathrm{~km}^{3}\), based on the global mean elevation of ...The Earth's volume exceeds that of the oblate spheroid due to the land volume above sea level, which is estimated to be \(3.755 \times 10^{7} \mathrm{~km}^{3}\), based on the global mean elevation of 231.3 meters.Note that one fourth of the polar circumference is less the \(2 \mathrm{~km}\) more than the pole-to-equator dimension used to define the original meter.
Geodesy is the study of the measurement of the Earth, its precise shape, and the details of its gravitational field. With precise determinations of latitude and longitude around the globe, geodesists ...Geodesy is the study of the measurement of the Earth, its precise shape, and the details of its gravitational field. With precise determinations of latitude and longitude around the globe, geodesists provide a means to tie together results of local land surveys into a consistent, coherent, global system.
