The European comparison of absolute gravimeters 2011 (ECAG-2011) in walferdange, Luxembourg

Results and recommendations

authored by: Olivier Francis, Henri Baumann, Tomas Volarik, Christian Rothleitner, Gilbert Klein, Marc Seil, Nicolas Dando, Ray Tracey, Christian Ullrich, Stefaan Castelein, Hu Hua, Wu Kang, Shen Chongyang, Xuan Songbo, Tan Hongbo, Li Zhengyuan, Vojtech Pálinkás, Jakub Kostelecký, Jaakko Mäkinen, Jyri Näränen, Sébastien Merlet, Tristan Farah, Christine Guerlin, Franck Pereira Dos Santos, Nicolas Le Moigne, Cédric Champollion, Sabrina Deville, Ludger Timmen, Reinhard Falk, Herbert Wilmes, Domenico Iacovone, Francesco Baccaro, Alessandro Germak, Emanuele Biolcati, Jan Krynski, Marcin Sekowski, Tomasz Olszak, Andrzej Pachuta, Jonas Agren, Andreas Engfeldt, René Reudink, Pedro Inacio, Daniel McLaughlin, Geoff Shannon, Marc Eckl, Tim Wilkins, Derek Van Westrum, Ryan Billson
Abstract: We present the results of the third European Comparison of Absolute Gravimeters held in Walferdange, Grand Duchy of Luxembourg, in November 2011. Twenty-two gravimeters from both metrological and non-metrological institutes are compared. For the first time, corrections for the laser beam diffraction and the self-attraction of the gravimeters are implemented. The gravity observations are also corrected for geophysical gravity changes that occurred during the comparison using the observations of a superconducting gravimeter. We show that these corrections improve the degree of equivalence between the gravimeters. We present the results for two different combinations of data. In the first one, we use only the observations from the metrological institutes. In the second solution, we include all the data from both metrological and non-metrological institutes. Those solutions are then compared with the official result of the comparison published previously and based on the observations of the metrological institutes and the gravity differences at the different sites as measured by non-metrological institutes. Overall, the absolute gravity meters agree with one another with a standard deviation of 3.1 μGal. Finally, the results of this comparison are linked to previous ones. We conclude with some important recommendations for future comparisons.
Organisation(s): Institute of Geodesy
External Organisation(s): University of Luxembourg
Federal Office of Metrology (METAS)
Brno University of Technology
Geoscience Australia
Federal Office of Metrology and Surveying (BEV)
Royal Observatory of Belgium (ROB)
Tsinghua University
China Earthquake Administration (CEA)
Research Institute of Geodesy, Topography and Cartography, Czech Republic
Finnish Geodetic Institute (FGI)
SYRTE - Observatoire de Paris
Université Montpellier
Federal Agency for Cartography and Geodesy (BKG)
Agenzia Spaziale Italiana (ASI)
Istituto Nazionale di Ricerca Metrologica (INRiM)
Institute of Geodesy and Cartography (IGiK)
Warsaw University of Technology
Lantmäteriet - The Swedish Mapping, Cadastral, and Land Registration Authority
Delft University of Technology
National Oceanography Centre
National Geodetic Survey (NGS)
Micro-g LaCoste
Type: Article
Journal: METROLOGIA
Volume: 50
Pages: 257-268
No. of pages: 12
ISSN: 0026-1394
Publication date: 16.05.2013
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Engineering(all)
Electronic version(s): https://doi.org/10.1088/0026-1394/50/3/257 (Access: Closed)
: Details in the research portal "Research@Leibniz University"

BibTeX

@article{f8059d99598b48dea4a4852e074a81a9,
title = "The European comparison of absolute gravimeters 2011 (ECAG-2011) in walferdange, Luxembourg: Results and recommendations",
abstract = "We present the results of the third European Comparison of Absolute Gravimeters held in Walferdange, Grand Duchy of Luxembourg, in November 2011. Twenty-two gravimeters from both metrological and non-metrological institutes are compared. For the first time, corrections for the laser beam diffraction and the self-attraction of the gravimeters are implemented. The gravity observations are also corrected for geophysical gravity changes that occurred during the comparison using the observations of a superconducting gravimeter. We show that these corrections improve the degree of equivalence between the gravimeters. We present the results for two different combinations of data. In the first one, we use only the observations from the metrological institutes. In the second solution, we include all the data from both metrological and non-metrological institutes. Those solutions are then compared with the official result of the comparison published previously and based on the observations of the metrological institutes and the gravity differences at the different sites as measured by non-metrological institutes. Overall, the absolute gravity meters agree with one another with a standard deviation of 3.1 μGal. Finally, the results of this comparison are linked to previous ones. We conclude with some important recommendations for future comparisons.",
author = "Olivier Francis and Henri Baumann and Tomas Volarik and Christian Rothleitner and Gilbert Klein and Marc Seil and Nicolas Dando and Ray Tracey and Christian Ullrich and Stefaan Castelein and Hu Hua and Wu Kang and Shen Chongyang and Xuan Songbo and Tan Hongbo and Li Zhengyuan and Vojtech P{\'a}link{\'a}s and Jakub Kosteleck{\'y} and Jaakko M{\"a}kinen and Jyri N{\"a}r{\"a}nen and S{\'e}bastien Merlet and Tristan Farah and Christine Guerlin and Santos, {Franck Pereira Dos} and Moigne, {Nicolas Le} and C{\'e}dric Champollion and Sabrina Deville and Ludger Timmen and Reinhard Falk and Herbert Wilmes and Domenico Iacovone and Francesco Baccaro and Alessandro Germak and Emanuele Biolcati and Jan Krynski and Marcin Sekowski and Tomasz Olszak and Andrzej Pachuta and Jonas Agren and Andreas Engfeldt and Ren{\'e} Reudink and Pedro Inacio and Daniel McLaughlin and Geoff Shannon and Marc Eckl and Tim Wilkins and Westrum, {Derek Van} and Ryan Billson",
year = "2013",
month = may,
day = "16",
doi = "10.1088/0026-1394/50/3/257",
language = "English",
volume = "50",
pages = "257--268",
journal = "METROLOGIA",
issn = "0026-1394",
publisher = "IOP Publishing Ltd.",
number = "3",
}