Aleksandr Naumovich Gel'fan (On His 60th Birthday)

Abstract

This paper is dedicated to the anniversary of Alexander Naumovich Gelfan, doctor of physical and mathematical sciences, director of the Water Problems Institute of the Russian Academy of Sciences. The most prominent scientific achievements of A.N. Gelfan in mathematical modeling of the hydrological cycle of river basins are presented, as well as the results of application of the geoinformational modeling complexes. The results of organizational activity of A.N. Gelfan and his participation in international organizations are reviewed.