Article (Scientific journals)
Hydrogeological investigations at the Membach station, Belgium, and application to correct long periodic gravity variations
Van Camp, Michel; Vanclooster, Marnik; Crommen, O. et al.
2006In Journal of Geophysical Research, 111 (B10)
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Keywords :
hydrogeological conditions; influence on gravity measurements; long periodic gravity variations; Membach gravimetry station
Abstract :
[en] A comprehensive hydrogeological investigation regarding the influence of variations in local and regional water mass on superconducting gravity measurements is presented for observations taken near the geodynamic station of Membach, Belgium. Applying a regional water storage model, the gravity contribution due to the elastic deformation of the Earth was derived. In addition, the Newtonian gravity effect induced by the local water mass variations was calculated, using soil moisture observations taken at the ground surface (about 48 m above the gravimeters). The computation of the gravimetric effect is based on a digital elevation model with spatially discretized rectangular prisms. The obtained results are compared with the observations of a superconducting gravimeter (SG). We find that the seasonal variations can be reasonably well predicted with the regional water storage model and the local Newtonian effects. Shorter-period effects depend on the local changes in hydrology. This result shows the sensitivity of SG observations to very local water storage changes.
Research center :
Aquapôle - ULiège
Disciplines :
Geological, petroleum & mining engineering
Author, co-author :
Van Camp, Michel;  Observatoire Royal de Belgique - ORB > Seismologie
Vanclooster, Marnik;  Université Catholique de Louvain > Environmental Sciences and Land Use Planning
Crommen, O.;  Université de Liège - ULiège > Département Argenco : Secteur GEO3 > Hydrogéologie et Géologie de l'Environnement
Petermans, T.;  Observatoire Royal de Belgique - ORB > Séismologie
Verbeeck, K.;  Observatoire Royal de Belgique - ORB > Séismologie
Meurers, B.;  University of Vienna > Institute of Meteorology and Geophysics
van Dam, T.;  European Center for Geodynamics and Seismology and Natural History Museum of Luxembourg > Géophysique
Dassargues, Alain  ;  Université de Liège - ULiège > Département Argenco : Secteur GEO3 > Hydrogéologie & Géologie de l'environnement
Language :
English
Title :
Hydrogeological investigations at the Membach station, Belgium, and application to correct long periodic gravity variations
Publication date :
2006
Journal title :
Journal of Geophysical Research
ISSN :
0148-0227
eISSN :
2156-2202
Publisher :
American Geophysical Union, Washington, United States - District of Columbia
Volume :
111
Issue :
B10
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 05 January 2009

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