Article (Scientific journals)
Indication of the uplift of the Ardenne in long-term gravity variations in Membach (Belgium)
Francis, Olivier; Van Camp, Michel; van Dam, Tonie et al.
2004In Geophysical Journal International, 158 (1), p. 346-352
Peer Reviewed verified by ORBi


Full Text
Publisher postprint (564.59 kB)
Request a copy

All documents in ORBilu are protected by a user license.

Send to


Keywords :
absolute and relative gravity; crustal motion; geodynamics; GPS; hydrology
Abstract :
[en] We report on the results of 7 yr of collocated gravity observations made with an FG5 abso- lute (AG) gravimeter and a GWR C-Series superconducting gravimeter (SG) located at the Membach Geophysical Station in eastern Belgium. The SG gravity residuals track changes in gravity periodically observed by the AG, at the microgal level. Further, in the SG resid- ual signal we distinguish a quasi-seasonal term that can be mostly explained by variations in local water storage effects. In the AG time-series we observe a small trend in the gravity of −0.6 ± 0.1 μGal yr−1 perhaps indicating that the Membach Station is being displaced up- wards by about 3.0 mm yr−1. An uplift of the region is confirmed by Global Positioning System (GPS) measurements performed 3 km away. We are able to explain the features in the gravity time-series in terms of water storage variability, post-glacial rebound and tectonic activity.
Disciplines :
Earth sciences & physical geography
Identifiers :
Author, co-author :
Francis, Olivier  ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Van Camp, Michel;  European Center for Geodynamics and Seismology and Natural History
van Dam, Tonie ;  European Center for Geodynamics and Seismology and Natural History Museum of Luxembourg
Warnant, René;  Observatoire Royal de Belgique, Bruxelles
Hendrickx, Marc;  Observatoire Royal de Belgique, Bruxelles
Language :
Title :
Indication of the uplift of the Ardenne in long-term gravity variations in Membach (Belgium)
Publication date :
Journal title :
Geophysical Journal International
Publisher :
Blackwell Publishing
Volume :
Issue :
Pages :
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBilu :
since 26 April 2013


Number of views
80 (2 by Unilu)
Number of downloads
1 (1 by Unilu)

Scopus citations®
Scopus citations®
without self-citations
WoS citations


Similar publications

Contact ORBilu