DETERMINATION OF THE GROUND-WATER LEVEL BY
MODERN NON-DISTRUCTIVE METHODS (GPR TECHNOLOGY)
I. C. NICU , Gh. ROMANESCU
ABSTRACT. – Determination of the ground-water level by modern non-dis¬tructive
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.
Keywords: Ground Penetrating Radar (GPR), Ground-water, geophysics, hydro-geomorphological
processes.