Converter
gravity-related height / elevation · Geodesy / leveling · Historical-modern
orthometric height
exact
- Record
- M604
- Definition quality
- Standardized
- Conversion mode
- contextual
- Calculator
- Context required
Definition
Orthometric height is the gravity-related height commonly associated with elevation above a geoid-based vertical reference.
History & use
NOAA describes orthometric heights as historically obtained by geodetic leveling and often known as heights above mean sea level.
Modern use
Modern use is context-dependent and varies by region or measurement system.
Sources & evidence
Source tier — · confidence high
- David B. Zilkoski, Edward E. Carlson, Curtis L. Smith; NOAA National Geodetic Survey — https://www.ngs.noaa.gov/PUBS_LIB/NGS592008069FINAL2.pdf
- NOAA National Ocean Service, Charting and Geodetic Services / National Geodetic Survey — https://repository.library.noaa.gov/view/noaa/2827/noaa_2827_DS1.pdf