Definition
Absolute gravimetry: Measurement of absolute value of free-fall acceleration in gravity field
Introduction
Gravimetry in a broad sense includes science and practice of the measurement of those physical quantities, which are manifestations of a gravity field. On a large scale, gravimetry includes the measurement of the gravity field of the Earth (or other planets) and, on a small scale, the measurement of the local gravity field in the laboratory and in the field. Gravimetry also includes studies of the methods and instruments for gravity measurement.
In a rotating coordinate system on the Earth, the free-fall acceleration g of the object is composed of the part ga due to gravitational attraction and of the centrifugal acceleration gc (see, e.g., Torge 1998a)
The ga and gc are the first derivatives with respect to coordinate z of the gravitational potential V and centrifugal potential Vc, respectively, in the local coordinate system,...
Abbreviations
- ABG:
-
Absolute ballistic gravimeter
- BIPM:
-
International bureau of weight and measures (Bureau international des poids et mesures)
- FFA:
-
Free fall acceleration
- IAG:
-
International association of geodesy
- ICAG:
-
International comparison of absolute gravimeters
- KCRV:
-
Key comparison reference value
- NMI:
-
National metrology institute
- SI:
-
International system of units (Système international d’unités)
- VIM:
-
International Vocabulary of Metrology (Vocabulaire international de métrologie)
References and Reading
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Vitushkin, L.F. (2023). Absolute Gravity Measurements. In: Sideris, M.G. (eds) Encyclopedia of Geodesy. Encyclopedia of Earth Sciences Series. Springer, Cham. https://doi.org/10.1007/978-3-319-02370-0_25-2
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Latest
Absolute Gravity Measurements- Published:
- 28 March 2023
DOI: https://doi.org/10.1007/978-3-319-02370-0_25-2
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Absolute Gravity Measurements- Published:
- 14 May 2015
DOI: https://doi.org/10.1007/978-3-319-02370-0_25-1