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Results of the Sixth International Comparison of Absolute Gravimeters, ICAG-2001

L Vitushkin1, M Becker2, Z Jiang1, O Francis3, T M van Dam3, J Faller4, J-M Chartier1, M Amalvict5, S Bonvalot6, N Debeglia7, S Desogus8, M Diament9, F Dupont7, R Falk10, G Gabalda6, C G L Gagnon11, T Gattacceca12, A Germak8, J Hinderer5, O Jamet13, G Jeffries14, R Käker15, A Kopaev16, J Liard11, A Lindau15, L Longuevergne6, B Luck5, E N Maderal17, J Mäkinen18, B Meurers19, S Mizushima20, J Mrlina21, D Newell22, C Origlia8, E R Pujol17, A Reinhold10, Ph Richard23, I A Robinson24, D Ruess25, S Thies23, M Van Camp26, M Van Ruymbeke26, M F de Villalta Compagni17 and S Williams14

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The Sixth International Comparison of Absolute Gravimeters was held from 5 June to 28 August 2001 at the Bureau International des Poids et Mesures (BIPM), Sèvres. Seventeen absolute gravimeters were used to make measurements at five sites of the BIPM gravity network. The vertical gravity gradients at the sites and the ties between them were also measured using seventeen relative gravimeters. For the first time the ties were also measured using absolute gravimeters. Various methods of processing the absolute and relative data were tested to calculate the results. The final results of ICAG-2001 are presented. The acceleration due to gravity at a height of 0.90 m is given as (980 925 701.2 ± 5.5) µGal and (980 928 018.8 ± 5.5) µGal for sites A and B, respectively, calculated using a combined adjustment of the absolute and relative data.


PACS

04.80.Nn Gravitational wave detectors and experiments

06.30.Dr Mass and density

06.30.Bp Spatial dimensions (e.g., position, lengths, volume, angles, and displacements)

06.20.F- Units and standards

Subjects

Instrumentation and measurement

Gravitation and cosmology

Dates

Issue 5 (2002)



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