Multidimensional Data Analysis in the Assessment of Ice-Jam Formation in River Basins.

The analysis and evaluation of the factors that have an effect on the frequency of ice jams and the characteristics of the accompanying floods have been shown to remain an important field of hydrophysical studies. Discriminant analysis of the data of long-term observations of river water regime in the Northern Dvina basin has been used to assess the backwater effect of downstream reaches on the characteristics of ice-jam floods in jam-hazardous river reaches with the construction of classification functions for characteristic reaches. Multiple regression models were analyzed to assess the effect of the morphometric features of river channel on the frequency of ice jams within two extended river basins in the European and Asian Russia. [ABSTRACT FROM AUTHOR]