L Vitushkin 1, M Becker 2, Z Jiang 1, O Francis 3, T M van Dam 3, J Faller 4, J-M Chartier 1, M Amalvict 5, S Bonvalot 6, N Debeglia 7, S Desogus 8, M Diament 9, F Dupont 7, R Falk 10, G Gabalda 6, C G L Gagnon 11, T Gattacceca 12, A Germak 8, J Hinderer 5, O Jamet 13, G Jeffries 14, R Käker 15, A Kopaev 16, J Liard 11, A Lindau 15, L Longuevergne 6, B Luck 5, E N Maderal 17, J Mäkinen 18, B Meurers 19, S Mizushima 20, J Mrlina 21, D Newell 22, C Origlia 8, E R Pujol 17, A Reinhold 10, Ph Richard 23, I A Robinson 24, D Ruess 25, S Thies 23, M Van Camp 26, M Van Ruymbeke 26, M F de Villalta Compagni 17 and S Williams 14
1
Bureau International des Poids et Mesures (BIPM), Sèvres, France
2
Institut für Geodäsie (IfG), Universität der Bundeswehr, Neubiberg, Germany
3
European Center for Geodynamics and Seismology (ECGS), Luxembourg
4
JILA, University of Colorado-National Institute of Standards and Technology (NIST), Boulder, CO, USA
5
École et Observatoire des Sciences de la Terre (EOST), Strasbourg, France
6
Institut de Recherche pour le Développement (IRD), Bondy, France
7
Bureau de Recherches Géologiques et Minières (BRGM), Orléans, France
8
Istituto di Metrologia ``G. Colonnetti'' (IMGC), Turin, Italy
9
Institut de Physique du Globe de Paris (IPGP), Paris, France
10
Bundesamt für Kartographie und Geodäsie (BKG), Frankfurt, Germany
11
Natural Resources Canada (NRCan), Ottawa, Canada
12
Institut Géographique National (IGN), Saint-Mandé, France
13
École Nationale des Sciences Géographiques (ENSG), Marne-la-Vallée, France
14
Proudman Oceanographic Laboratory (POL), Bidston, UK
15
Institut für Erdmessung (IfE), Universität Hannover, Hanover, Germany
16
Sternberg Astronomical Institute (SAI), Moscow State University, Moscow, Russian Federation
17
Instituto Geográfico Nacional (IGN), Madrid, Spain
18
Finnish Geodetic Institute (FGI), Masala, Finland
19
Institute für Meteorologie und Geophysik (IMG), Universität Wien, Vienna, Austria
20
National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology (NMIJ/AIST), Tsukuba, Japan
21
Geophysical Institute (GFÚ) AS CR, Prague, Czech Republic
22
National Institute of Standards and Technology (NIST), Gaithersburg, USA
23
Swiss Federal Office of Metrology and Accreditation (METAS), Bern-Wabern, Switzerland
24
National Physical Laboratory (NPL), Teddington, UK
25
Bundesamt für Eich- und Vermessungswesen (BEV), Vienna, Austria
26
Observatoire Royal de Belgique (ORB), Brussels, Belgium
L Vitushkin et al 2002 Metrologia 39 407
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.
04.80.Nn Gravitational wave detectors and experiments
06.30.Bp Spatial dimensions (e.g., position, lengths, volume, angles, and displacements)
Issue 5 (2002)
L Vitushkin et al 2002 Metrologia 39 407
T Kluge et al 2007 Phys. Med. Biol. 52 N467