GNSS equipment as a new device for fast measuring and mapping of river sandbar morphology

Abstract

This paper presents the results obtained from the topographic surveys of the surface of one of the positive channel forms (sandbars) of the Vistula river. The new data collection technology, a GPS RTK device, was used to take the geodetic measurements. The results obtained were processed in GIS computer programme and represented in the form of a Digital Terrain Model (DTM). The results of the morphometric measurements of the channel are also presented.