Land subsidence; groundwater exploitation; InSAR; modeling
Abstract :
[en] Using the Synthetic Aperture Radar Interferometry (InSAR) technique on data acquired by satellite ERS 1/2, ENVISAT and Sentinel-1A, from 1992 to 2022, localized vertical ground motion have been detected throughout Belgium. In the Leuven area, two subsidence bowls related to the Quaternary valley of the Dyle river are identified. One of the assumption to explain vertical ground motion is anthropic groundwater pressure variation induced by pumping in the upper aquifers. A general methodology is developed to identify consolidation and elastic rebound processes occurring in confined and unconfined conditions using 3D regional groundwater flow models coupled with 1D geomechanical models.
Disciplines :
Geological, petroleum & mining engineering
Author, co-author :
Moreau, Aline ; Université de Liège - ULiège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Dassargues, Alain ; Université de Liège - ULiège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Orban, Philippe ; Université de Liège - ULiège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Devleeschouwer, Xavier; Royal Belgian Institute of Natural Sciences [BE] > Geological Survey of Belgium
Declercq, Pierre-Yves; Royal Belgian Institute of Natural Sciences [BE] > Geological Survey of Belgium
Language :
English
Title :
Modeling land subsidence caused by groundwater extraction and revealed by geodetic InSAR measurements in the Leuven area.
Alternative titles :
[fr] Modélisation de la subsidence causée par l'extraction des eaux souterraines et révélés par des mesures géodésiques InSAR dans la région de Louvain.
Publication date :
19 April 2023
Event name :
The Tenth International Symposium on Land Subsidence
