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A calibration system for gravimeters using a sinusoidal acceleration resulting from a vertical periodic movement

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Abstract

An inertial force is induced by the oscillating vertical displacementA sin ωt of a platform supporting a feedback LaCoste Romberg gravimeter.

The resulting accelerationdg is proportional to the square of the frequency and allows to perform an absolute calibration of the instrument.

The effects of the vertical gradient and of the residual tilt are eliminated by operating at different frequencies.

After the experiment with a first prototype, a new platform based on a different mechanical principle has been developed.

The relative precision is at least 0.25 % as confirmed by the study of a 6 months tidal record. Some applications are described.

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Authors and Affiliations

  1. Royal Observatory of Belgium, 3, Avenue Circulaire, B-1180, Bruxelles, (Belgium)

    M. Van Ruymbeke

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  1. M. Van Ruymbeke
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Van Ruymbeke, M. A calibration system for gravimeters using a sinusoidal acceleration resulting from a vertical periodic movement. Bull. Geodesique 63, 223–236 (1989). https://doi.org/10.1007/BF02520473

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  • DOI: https://doi.org/10.1007/BF02520473

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