Ground penetrating radar survey is a surface, non-destructive geophysical technique using electromagnetic radiations and detecting signals reflected from subsurface structures. GPR survey is used in engineering geology for pre-investment site characterization, location of cavities and voids, detection of buried objects, underground tunnels, for archaeological and environmental studies.
EQUIPMENT
GPR System SIR-20, GSSI Inc.
APPLICATIONS
mapping subsurface structure
site inspection /characterization
road & rail track bed inspection
detecting subsurface objects and structures
supporting archaeological and forensic searching
GPR operates above the ground. The device detects signals reflected from subsurface structures and produce cross-sectional image of the ground. The depth range of GPR measurements depends on some factors as a frequency of emitted radio-wave, capability of the transmitting antenna as well as electrical properties of the geological medium.