Data Acquisition and Monitoring
doi:10.3850/978-981-07-0188-8_P048
Monitoring Ground Movements using Satellite Mounted Radar
Muniram Budhu1, Ibrahim Bahadir Adiyaman2, Dylan Moriarty3 and
Rashidatu Ossai2
1Professor, 2Graduate Students, 3Undergraduate Student, University of Arizona, Department of Civil Engineering & Engineering Mechanics, Tucson, Arizona, 85721, USA
ABSTRACT
This paper deals with the use of satellite mounted radar to monitor ground movements from groundwater storage and extraction over large land areas. Side-looking radars mounted on satellites are becoming useful tools to track ground settlement or ground uplift with current accuracies about ±5 mm. The technique of detecting ground deformations using satellite mounted radar is called Interferometric Synthetic Aperture Radar (InSAR). InSAR makes use of the phase difference recorded along the same swath of ground from two orbital passes of the satellite to get relative ground movements. InSAR data from the European Remote Sensing Satellite 1 are used to track the ground movements from changes in groundwater levels from pumping and from aquifer storage. It is shown that InSAR is a viable tool not only to monitor relative ground movements but that it can also be used to monitor the movement of water plumes in areas where the soil profile has layers or zones of fine-grained soils.
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