Standard gravity: Difference between revisions
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== standard gravity == | == standard gravity == | ||
Abbreviated ''g''<sub>0</sub>. Its value is 9.80665, with [[International system of units|international system of units (SI units)]], depending on the application, of either forcer per mass (N kg<sup>−1</sup>) or [[acceleration]] (m s<sup>−2</sup>).<br/> | |||
A time- and space-averaged value for [[gravity]] at midlatitudes and [[sea level]] under [[standard atmosphere|standard atmospheric]] conditions.<br/> | |||
The abovementioned value is approved by the General Conference on Weights and Measures (GCWM; in French: Conférence générale des poids et mesures, CGPM), which is the supreme authority of the International Bureau of Weights and Measures (BIPM), and is broadly accepted by the International Science Council (ISC) Committee on Data (CODATA), the U.S. National Institute of Standards and Technology (NIST), and, specifically for atmospheric and hydrologic modeling by the United Nation's World Meteorological Organization, the U.S. Committee on Extension to the Standard Atmosphere (COESA).<br/> | |||
''Cautionary note'': Prudence is required when employing the standard value without assessing and, if necessary, correcting for local site-specific conditions, since local gravity varies with [[latitude]], [[longitude]], [[elevation]] of the measuring site and adjacent [[topography]], types and variations of the composition and the structure of local geology, and even the [[season]] and phase of the moon.<br/><br/> | |||
Blakely, R. J., 1995. ''Potential Theory in Gravity and Magnetic Applications''. Cambridge University Press, 441 pp.<br/> | |||
Hinze, W. J., Von Frese, R. R. B., and Saad, A. H., 2013. ''Gravity and Magnetic Exploration''. Cambridge University Press, 512 pp.<br/> | |||
Telford, W. M., Geldart, L. P., and Sheriff, R. E., 1990. ''Applied Geophysics''. 2nd ed. Cambridge University Press, 770 pp.<br/><br/> | |||
<p>''Term edited 15 March 2024.''</p> | |||
Latest revision as of 07:05, 30 March 2024
standard gravity[edit | edit source]
Abbreviated g0. Its value is 9.80665, with international system of units (SI units), depending on the application, of either forcer per mass (N kg−1) or acceleration (m s−2).
A time- and space-averaged value for gravity at midlatitudes and sea level under standard atmospheric conditions.
The abovementioned value is approved by the General Conference on Weights and Measures (GCWM; in French: Conférence générale des poids et mesures, CGPM), which is the supreme authority of the International Bureau of Weights and Measures (BIPM), and is broadly accepted by the International Science Council (ISC) Committee on Data (CODATA), the U.S. National Institute of Standards and Technology (NIST), and, specifically for atmospheric and hydrologic modeling by the United Nation's World Meteorological Organization, the U.S. Committee on Extension to the Standard Atmosphere (COESA).
Cautionary note: Prudence is required when employing the standard value without assessing and, if necessary, correcting for local site-specific conditions, since local gravity varies with latitude, longitude, elevation of the measuring site and adjacent topography, types and variations of the composition and the structure of local geology, and even the season and phase of the moon.
Blakely, R. J., 1995. Potential Theory in Gravity and Magnetic Applications. Cambridge University Press, 441 pp.
Hinze, W. J., Von Frese, R. R. B., and Saad, A. H., 2013. Gravity and Magnetic Exploration. Cambridge University Press, 512 pp.
Telford, W. M., Geldart, L. P., and Sheriff, R. E., 1990. Applied Geophysics. 2nd ed. Cambridge University Press, 770 pp.
Term edited 15 March 2024.
