Abstract
Ground penetrating radar (GPR) investigations were conducted to characterise internal architecture of Narew River point bar and the riverbed morphology. The study area is situated in north of Warsaw (Central Poland), close to place where Narew River is flowing into Vistula River. 32 GPR profiles were taken on the most accessible point bar using 300 and 125 MHz antennas. Also 5 GPR profiles from water have been made - the survey was conducted from a pontoon with installed 125 and 70 MHz antennas. All profiles were collected using Transient Technologies VIY3 GPR. In this paper characteristic ground penetrating radar profiles are presented, to show both internal architecture of fluvial deposits and the riverbed morphology. Interpretation of selected GPR profiles showed the presence of erosional surfaces and the diversity of the riverbed morphology of Narew River.
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