Channel regime studies within the Lena drainage basin and navigability improvement measures

Abstract

The paper summarizes results of channel processes studies which had been carried out in the Lena drainage basin, on the Lena, Aldan, Kirenga and Vilui rivers. The studies show the channel evolution and regularities of the channel deformation in sandy channels are different from those in gravel and boulder channels. The composition of the recent alluvium is discussed as well as channel types and dynamics. The studies results permit to develop both theoretical schemes and practical measures of channels control for the navigability improvement.