Volume XIII |

Preliminary data on the Jiu River meanders in the lower course (South-West Romania)

Abstract: The aim of this study is the complex monitoring of the Jiu river bed in terms of geometry and complexity of meanders in its lower sector (on a length of 77 km). The detailed analysis of the lower Jiu sector meanders completes the geomorphologic knowledge of rivers in Romania, starting from the identification and determination of the type of meanders: the results that were achieved are represented by the indexes concerning their age and migration rate (wavelength, 1977 – 4721 m; meanders amplitude, 511 – 2862 m; the mean radius of curvature, 270 – 997 m and the sinuosity index, from 0.87 to 2.17). Another aim of this study is the identification of the evolution features of the Jiu river, the relationships between some hydrological factors of control (liquid flow and suspended sediments – annual average values) and the generations of meanders (actual or open meanders, and incised meanders or paleomeanders) distributed in two sectors: Podari – Padea sector and the sector stretching from Padea up to the Danube confluence. In addition, our concern is motivated by the fact that in the last years there were analyzed the landslides and subsidence on the right slope of the Jiu river (next to Bâzdâna and Drănic settlements), strongly eroded and in close connection with the meandering of the watercourse.