Acceleration due to Gravity (HIGF)
Hezar International Gravity Formula with elevation (masl) and latitude (degrees).
Formula used (units in mGal):
g = 978031.85 · ( 1 + 0.0053024·sin²(θ) − 0.000032309786·sin²(2θ) ) − 0.27·h
θ in degrees, h in meters. Result converted using 1 mGal = 1×10−5 m/s².
References
- Hassanpour, M., Rezaie, M.R., Khezripour, S., et al. (2022). Introduction of the Hezar International Gravity Formula (Frontiers in Physics) .
- Same article record: ResearchGate.
- IGF67 constant context (978031.85 mGal): NOAA NGS Bluebook, Chapter 11 (PDF).
- Unit definition: Gal unit ⇒ 1 mGal = 1×10−5 m/s².
Reviewed by Sulav Lohani