The city of Delft, The Netherlands, is very vulnerable for ground water. A better understanding of the relation between ground water level (fluctuations) and surface displacement would assist future water management. The displacement field in Delft is analyzed by Persistent Scatterer Interferometry (PSI) using a periodic displacement model. Both ERS-1/2 and Envisat SAR data are observed, covering a period between 1992 and 2007. Comparison with ground water level measurements show high correlation with the PSI time series. The displacement signals have a delay of about 1 month with respect to the ground water fluctuations.
|Publisher||ESA communication Production Office, ESTEC|
|Period||26/11/07 → 30/11/07|
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