DocumentCode :
340532
Title :
Land subsidence in Mexico City mapped by ERS differential SAR interferometry
Author :
Strozzi, Tazio ; Wegmuller, Urs
Author_Institution :
Gamma Remote Sensing, Muri, Switzerland
Volume :
4
fYear :
1999
fDate :
1999
Firstpage :
1940
Abstract :
Land subsidence is a severe problem in Mexico City. The city is built on highly compressible clays and by reason of strong groundwater extraction a total subsidence of more than nine meters has been observed over the last century. ERS differential SAR interferometry was used to map the subsidence of Mexico City between December 1995 and September 1997. For some areas subsidence velocities of more than 30 cm per year with strong spatial gradients of the vertical movements were identified. This remote sensing technique, unique for spatial coverage and resolution, can give significant information for a rational management of the aquifer system, for the planning of new structures and for actions to preserve damaged buildings
Keywords :
geodesy; geophysical techniques; groundwater; hydrological techniques; remote sensing by radar; spaceborne radar; synthetic aperture radar; terrain mapping; topography (Earth); AD 1995; AD 1996; AD 1997; ERS; InSAR; Mexico City; abstraction; aquifer; compressible clay; differential SAR interferometry; geodesy; geophysical measurement technique; groundwater extraction; hydrology; land surface topography; radar remote sensing; spaceborne radar; subsidence; terrain mapping; Airports; Buildings; Cities and towns; Interferometry; Layout; Phase estimation; Remote monitoring; Remote sensing; Spatial resolution; Surfaces;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1999. IGARSS '99 Proceedings. IEEE 1999 International
Conference_Location :
Hamburg
Print_ISBN :
0-7803-5207-6
Type :
conf
DOI :
10.1109/IGARSS.1999.774993
Filename :
774993
Link To Document :
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