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DETERMINATION OF THE GROUND-WATER LEVEL BY MODERN NON-DISTRUCTIVE METHODS (GPR TECHNOLOGY)

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Author(s): I. C. NICU | Gh. ROMANESCU

Journal: Aerul ┼či Apa : Componente ale Mediului
ISSN 2067-743X

Volume: 2011;
Start page: 441;
Date: 2011;
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Keywords: Ground Penetrating Radar (GPR) | Ground-water | geophysics | hydro-geomorphological processes

ABSTRACT
Determination of the ground-water level by modern non-dis┬Čtructive methods (ground-penetrating radar technology). Ground Penetrating Radar (GPR) is now a well-accepted geophysical technique, which unfortunately in our country its less used. Historically, the development of GPR comes from the use of radio echosounding to determine ice thickness and it was only a short step to enlarge the domain of research such as permafrost, geological investigation (bedrock, sedimentology), environmental assessment and hydrogeophysical studies (under-ground water location, soil water content). The GPR method measures the travel time of electromagnetic impulses in subsurface materials. An impulse radar system radiates repetitive electromagnetic impulses into the soil. A bandwidth antenna is usually placed in close proximity and electromagnetic coupled to the ground surface. It detects and measures the depth of reflecting discontinuities in subsurface soils and other earth materials to within a few centimeters depending of antenna frequency. For over 30 years, GPR has been used extensively for hydropedological investigations. Our research aims to determine the groundwater to estimate the degree of evolution of hydro-geomorphological processes.
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