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Ground Penetrating Radar as a Sentinel Device
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 23rd EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems, Apr 2010, cp-175-00003
Abstract
Geophysical methods provide a non-destructive non-intrusive method of subsurface investigation. Oftentimes, however, the target is difficult to “see” due to lack of contrast between the target and background. This lack of contrast can be rectified through the use of a sentinel device. A series of sentinel devices were used in downtown Pittsburgh, Pennsylvania to determine potential subsidence beneath a building plaza. This sentinel strategy was performed to predict future deformation of the sidewalk and to prevent foot-traffic hazards.