| AHD |
AHD |
Australian Height Datum. Height datum used for standardised elevations across Australia. The datum surface is defined as that which passes through mean sea level at the 30 specified tide gauges and through points at zero AHD height vertically below the other basic junction points. |
| EGM96 |
EGM96 |
EGM96 (Earth Gravitational Model 1996) is a geopotential model of the Earth consisting of spherical harmonic coefficients complete to degree and order 360. |
| MSL |
MSL |
Mean Sea Level |
| NAVD88 |
NAVD88 |
North American Vertical Datum of 1988 |
| NGVD29 |
NGVD29 |
National Geodetic Vertical Datum of 1929 |
| Unknown |
Unknown |
The vertical datum is unknown |