Sedimentation and lithological structure of the surface sedimentary strata in the shallow estuary of the river Grendalen (Gren-fjord)

This paper presents the results of studies of the River Grendalen estuary shallow (Gren-fjord). It is based on materials of the field work carried out in 2014. The waters sonar research, sampling in the intertidal zone, selection of ground shock tube samples, sensing by thermohaline component, determining the amount of particulate matter in the surface water have been produced. The granulometric analysis of samples of loose deposits has been made. According to the sonar data the bathymetric model of the study area has been built. The scheme of distribution of suspended matter in the estuarial area of the River Grendalen and adjacent waters has been made. The factors influenced the movement of sediment and the formation of the modern subaqueous landscape in the region have been analyzed